java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fa1c628-m [2019-01-31 17:01:46,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 17:01:46,075 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 17:01:46,089 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-31 17:01:46,089 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-31 17:01:46,090 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-31 17:01:46,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-31 17:01:46,094 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-31 17:01:46,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-31 17:01:46,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-31 17:01:46,101 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-31 17:01:46,145 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-31 17:01:46,167 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 17:01:46,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 17:01:46,169 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 17:01:46,169 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 17:01:46,170 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 17:01:46,170 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 17:01:46,170 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 17:01:46,171 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 17:01:46,171 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-31 17:01:46,171 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 17:01:46,171 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-31 17:01:46,171 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-31 17:01:46,171 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 17:01:46,172 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 17:01:46,173 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 17:01:46,173 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 17:01:46,173 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 17:01:46,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 17:01:46,174 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 17:01:46,174 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 17:01:46,174 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 17:01:46,174 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 17:01:46,174 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 17:01:46,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 17:01:46,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 17:01:46,177 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 17:01:46,177 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 17:01:46,177 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 17:01:46,177 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 17:01:46,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 17:01:46,178 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 17:01:46,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 17:01:46,178 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 17:01:46,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 17:01:46,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 17:01:46,179 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 17:01:46,179 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 17:01:46,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 17:01:46,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 17:01:46,180 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 17:01:46,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 17:01:46,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 17:01:46,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 17:01:46,255 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 17:01:46,256 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 17:01:46,257 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-01-31 17:01:46,257 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-01-31 17:01:46,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 17:01:46,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 17:01:46,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 17:01:46,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 17:01:46,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 17:01:46,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 17:01:46,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 17:01:46,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 17:01:46,395 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 17:01:46,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/1) ... [2019-01-31 17:01:46,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 17:01:46,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 17:01:46,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 17:01:46,437 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 17:01:46,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 17:01:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 17:01:46,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 17:01:46,987 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 17:01:46,988 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-31 17:01:46,989 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:01:46 BoogieIcfgContainer [2019-01-31 17:01:46,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 17:01:46,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-31 17:01:46,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-31 17:01:46,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-31 17:01:46,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 05:01:46" (1/2) ... [2019-01-31 17:01:46,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d426aa and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:01:46, skipping insertion in model container [2019-01-31 17:01:46,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:01:46" (2/2) ... [2019-01-31 17:01:46,997 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-01-31 17:01:47,007 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-31 17:01:47,016 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-31 17:01:47,034 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-31 17:01:47,073 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-31 17:01:47,074 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-31 17:01:47,074 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-31 17:01:47,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-31 17:01:47,074 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-31 17:01:47,074 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-31 17:01:47,075 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-31 17:01:47,075 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-31 17:01:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-31 17:01:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-31 17:01:47,107 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:01:47,108 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-31 17:01:47,112 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:01:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:01:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-31 17:01:47,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:01:47,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:01:47,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:01:47,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:01:47,173 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:01:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:01:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:01:47,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-31 17:01:47,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-31 17:01:47,354 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-31 17:01:47,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-31 17:01:47,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-31 17:01:47,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-31 17:01:47,374 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-31 17:01:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:01:47,693 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-31 17:01:47,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-31 17:01:47,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-31 17:01:47,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:01:47,710 INFO L225 Difference]: With dead ends: 45 [2019-01-31 17:01:47,710 INFO L226 Difference]: Without dead ends: 40 [2019-01-31 17:01:47,713 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-31 17:01:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-31 17:01:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-31 17:01:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-31 17:01:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-31 17:01:47,770 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-31 17:01:47,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:01:47,771 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-31 17:01:47,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-31 17:01:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-31 17:01:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:01:47,772 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:01:47,772 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:01:47,773 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:01:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:01:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-31 17:01:47,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:01:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:01:47,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:01:47,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:01:47,775 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:01:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:01:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:01:47,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:01:47,930 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:01:47,931 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:01:47,934 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-31 17:01:47,972 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-31 17:01:47,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:01:48,061 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:01:48,063 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-31 17:01:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:01:48,072 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:01:48,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:01:48,073 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-31 17:01:48,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:01:48,090 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:01:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:01:48,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:01:48,442 WARN L181 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-31 17:01:48,475 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-31 17:01:48,551 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-31 17:01:48,572 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,576 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-31 17:01:48,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,612 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-31 17:01:48,655 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,680 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,705 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,723 INFO L303 Elim1Store]: Index analysis took 106 ms [2019-01-31 17:01:48,725 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-31 17:01:48,764 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,767 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,769 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,773 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,801 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,804 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-31 17:01:48,859 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,881 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,892 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,894 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,896 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,899 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,901 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-31 17:01:48,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:48,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,022 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,026 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,029 INFO L303 Elim1Store]: Index analysis took 121 ms [2019-01-31 17:01:49,031 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-31 17:01:49,057 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,061 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,063 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,065 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,070 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,075 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:49,080 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-31 17:01:49,230 INFO L303 Elim1Store]: Index analysis took 138 ms [2019-01-31 17:01:49,234 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-31 17:01:49,236 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-31 17:01:49,801 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:49,914 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,104 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,221 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,277 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,331 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,362 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,416 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,442 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:50,523 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,524 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 140 [2019-01-31 17:01:50,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,610 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,613 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-31 17:01:50,717 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-31 17:01:50,763 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,785 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,828 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,828 INFO L303 Elim1Store]: Index analysis took 109 ms [2019-01-31 17:01:50,831 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 123 [2019-01-31 17:01:50,941 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-01-31 17:01:50,950 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,953 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,954 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,955 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:50,958 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 122 [2019-01-31 17:01:51,351 WARN L181 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-01-31 17:01:51,378 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,380 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,382 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,385 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,386 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,388 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,391 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 130 [2019-01-31 17:01:51,519 WARN L181 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-31 17:01:51,564 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,587 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,598 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,623 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,644 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,667 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,674 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,675 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,678 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,681 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,681 INFO L303 Elim1Store]: Index analysis took 159 ms [2019-01-31 17:01:51,683 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 145 [2019-01-31 17:01:51,825 WARN L181 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-31 17:01:51,851 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,852 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,853 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,854 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,856 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,857 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,858 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,861 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,863 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,865 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:51,868 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-31 17:01:52,057 WARN L181 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-31 17:01:52,066 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,067 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,068 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,069 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,070 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,072 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,073 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,076 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,076 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,077 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,078 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,079 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,080 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,082 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:52,085 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 145 [2019-01-31 17:01:52,086 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,168 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,249 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,331 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,414 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,498 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,586 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,671 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:01:52,845 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 17:01:52,845 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-31 17:01:52,997 WARN L181 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-01-31 17:01:53,040 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:01:53,042 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 190 [2019-01-31 17:01:53,044 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 17:01:53,236 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 17:01:53,237 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-31 17:01:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:01:53,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 17:01:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:01:53,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 17:01:53,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 17:01:53,345 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 17:01:53,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 17:01:53,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 17:01:53,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-31 17:01:53,347 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-31 17:01:53,499 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2019-01-31 17:05:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 17:05:10,326 INFO L93 Difference]: Finished difference Result 79 states and 116 transitions. [2019-01-31 17:05:10,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-31 17:05:10,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-31 17:05:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 17:05:10,330 INFO L225 Difference]: With dead ends: 79 [2019-01-31 17:05:10,330 INFO L226 Difference]: Without dead ends: 77 [2019-01-31 17:05:10,332 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-01-31 17:05:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-01-31 17:05:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 26. [2019-01-31 17:05:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-01-31 17:05:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 57 transitions. [2019-01-31 17:05:10,340 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 57 transitions. Word has length 3 [2019-01-31 17:05:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 17:05:10,341 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 57 transitions. [2019-01-31 17:05:10,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-31 17:05:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 57 transitions. [2019-01-31 17:05:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 17:05:10,341 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 17:05:10,342 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 17:05:10,342 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT]=== [2019-01-31 17:05:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:05:10,343 INFO L82 PathProgramCache]: Analyzing trace with hash 30888, now seen corresponding path program 1 times [2019-01-31 17:05:10,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 17:05:10,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:05:10,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:05:10,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 17:05:10,344 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 17:05:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:05:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:05:10,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:05:10,439 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 17:05:10,440 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 17:05:10,440 INFO L207 CegarAbsIntRunner]: [0], [34], [43] [2019-01-31 17:05:10,442 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-31 17:05:10,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 17:05:10,452 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 17:05:10,452 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-31 17:05:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 17:05:10,453 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 17:05:10,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 17:05:10,453 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-31 17:05:10,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 17:05:10,462 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 17:05:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 17:05:10,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 17:05:10,556 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-01-31 17:05:10,562 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 42 [2019-01-31 17:05:10,570 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,571 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,572 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 52 [2019-01-31 17:05:10,579 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,581 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,586 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,587 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 66 [2019-01-31 17:05:10,621 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,623 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,625 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,628 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,629 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 84 [2019-01-31 17:05:10,670 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,673 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,675 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,677 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,680 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,682 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 106 [2019-01-31 17:05:10,691 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,693 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,695 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,696 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,697 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,697 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,699 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 132 [2019-01-31 17:05:10,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,760 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,781 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,834 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,855 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,881 INFO L303 Elim1Store]: Index analysis took 177 ms [2019-01-31 17:05:10,882 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 162 [2019-01-31 17:05:10,927 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,944 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,968 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:10,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,010 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,016 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,019 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,022 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,022 INFO L303 Elim1Store]: Index analysis took 135 ms [2019-01-31 17:05:11,024 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 196 [2019-01-31 17:05:11,047 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 195 [2019-01-31 17:05:11,049 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,162 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,277 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,348 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,404 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,491 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,528 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,558 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,591 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,615 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:11,679 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,681 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 140 [2019-01-31 17:05:11,796 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,819 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,820 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 127 [2019-01-31 17:05:11,899 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,900 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,901 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,903 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,904 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 123 [2019-01-31 17:05:11,984 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,985 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,986 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,988 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,989 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,990 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:11,992 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 122 [2019-01-31 17:05:12,113 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,114 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,115 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,116 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,118 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,119 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,120 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,121 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,123 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 130 [2019-01-31 17:05:12,238 WARN L181 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-31 17:05:12,276 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,299 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,308 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,309 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,310 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,311 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,312 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,313 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,317 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 145 [2019-01-31 17:05:12,513 WARN L181 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-31 17:05:12,518 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,519 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,520 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,521 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,527 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,528 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,529 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,530 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,530 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,531 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,533 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,534 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,536 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 167 [2019-01-31 17:05:12,790 WARN L181 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-31 17:05:12,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,808 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,816 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,818 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,820 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,822 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,825 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,830 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,832 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,834 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:12,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 145 [2019-01-31 17:05:12,836 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-31 17:05:12,927 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,020 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,179 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,268 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,369 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,469 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,559 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 17:05:13,700 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 17:05:13,701 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-31 17:05:13,836 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 17:05:13,838 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 196 [2019-01-31 17:05:13,840 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 17:05:14,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 17:05:14,006 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-31 17:05:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:05:14,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 17:05:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 17:05:14,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 17:05:14,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 17:05:14,183 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 17:05:14,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 17:05:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 17:05:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-01-31 17:05:14,184 INFO L87 Difference]: Start difference. First operand 26 states and 57 transitions. Second operand 6 states. [2019-01-31 17:05:40,024 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-01-31 17:05:40,029 INFO L168 Benchmark]: Toolchain (without parser) took 233709.62 ms. Allocated memory was 134.7 MB in the beginning and 310.4 MB in the end (delta: 175.6 MB). Free memory was 109.6 MB in the beginning and 144.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 141.1 MB. Max. memory is 7.1 GB. [2019-01-31 17:05:40,030 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 17:05:40,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.30 ms. Allocated memory is still 134.7 MB. Free memory was 109.6 MB in the beginning and 107.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-01-31 17:05:40,031 INFO L168 Benchmark]: Boogie Preprocessor took 41.60 ms. Allocated memory is still 134.7 MB. Free memory was 107.1 MB in the beginning and 105.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-01-31 17:05:40,032 INFO L168 Benchmark]: RCFGBuilder took 553.05 ms. Allocated memory is still 134.7 MB. Free memory was 105.8 MB in the beginning and 91.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-01-31 17:05:40,033 INFO L168 Benchmark]: TraceAbstraction took 233037.32 ms. Allocated memory was 134.7 MB in the beginning and 310.4 MB in the end (delta: 175.6 MB). Free memory was 91.3 MB in the beginning and 144.2 MB in the end (delta: -52.9 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. [2019-01-31 17:05:40,037 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.30 ms. Allocated memory is still 134.7 MB. Free memory was 109.6 MB in the beginning and 107.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.60 ms. Allocated memory is still 134.7 MB. Free memory was 107.1 MB in the beginning and 105.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 553.05 ms. Allocated memory is still 134.7 MB. Free memory was 105.8 MB in the beginning and 91.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233037.32 ms. Allocated memory was 134.7 MB in the beginning and 310.4 MB in the end (delta: 175.6 MB). Free memory was 91.3 MB in the beginning and 144.2 MB in the end (delta: -52.9 MB). Peak memory consumption was 122.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...