java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b7bd044-m [2019-01-18 18:07:05,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-18 18:07:05,988 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-18 18:07:06,000 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-18 18:07:06,000 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-18 18:07:06,001 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-18 18:07:06,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-18 18:07:06,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-18 18:07:06,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-18 18:07:06,007 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-18 18:07:06,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-18 18:07:06,055 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-01-18 18:07:06,078 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-18 18:07:06,078 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-18 18:07:06,079 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-18 18:07:06,079 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-18 18:07:06,080 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-18 18:07:06,080 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-18 18:07:06,080 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-18 18:07:06,080 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-18 18:07:06,080 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-18 18:07:06,081 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-18 18:07:06,081 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-18 18:07:06,081 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-18 18:07:06,081 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-18 18:07:06,082 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-18 18:07:06,082 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-18 18:07:06,082 INFO L133 SettingsManager]: * Use SBE=true [2019-01-18 18:07:06,082 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-18 18:07:06,084 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-18 18:07:06,084 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-18 18:07:06,084 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-18 18:07:06,084 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-18 18:07:06,085 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-18 18:07:06,085 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-18 18:07:06,085 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-18 18:07:06,085 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-18 18:07:06,085 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-18 18:07:06,085 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-18 18:07:06,086 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-18 18:07:06,086 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-18 18:07:06,086 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-18 18:07:06,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 18:07:06,087 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-18 18:07:06,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-18 18:07:06,087 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-18 18:07:06,087 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-18 18:07:06,087 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-18 18:07:06,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-18 18:07:06,088 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-18 18:07:06,088 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-18 18:07:06,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-18 18:07:06,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-18 18:07:06,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-18 18:07:06,139 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-18 18:07:06,139 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-18 18:07:06,140 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-01-18 18:07:06,141 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-01-18 18:07:06,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-18 18:07:06,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-18 18:07:06,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-18 18:07:06,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-18 18:07:06,183 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-18 18:07:06,200 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,214 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-18 18:07:06,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-18 18:07:06,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-18 18:07:06,255 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-18 18:07:06,271 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,271 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,274 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,275 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,292 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,300 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,301 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 18.01 06:07:06" (1/1) ... [2019-01-18 18:07:06,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-18 18:07:06,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-18 18:07:06,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-18 18:07:06,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-18 18:07:06,314 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 18.01 06:07:06" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-18 18:07:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-18 18:07:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-18 18:07:06,876 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-18 18:07:06,876 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-18 18:07:06,878 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:07:06 BoogieIcfgContainer [2019-01-18 18:07:06,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-18 18:07:06,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-18 18:07:06,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-18 18:07:06,883 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-18 18:07:06,883 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 18.01 06:07:06" (1/2) ... [2019-01-18 18:07:06,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b14f5a8 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 06:07:06, skipping insertion in model container [2019-01-18 18:07:06,884 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 18.01 06:07:06" (2/2) ... [2019-01-18 18:07:06,886 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-01-18 18:07:06,897 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-18 18:07:06,911 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-18 18:07:06,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-18 18:07:06,972 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-18 18:07:06,972 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-18 18:07:06,972 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-18 18:07:06,973 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-18 18:07:06,974 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-18 18:07:06,975 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-18 18:07:06,975 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-18 18:07:06,975 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-18 18:07:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-18 18:07:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-18 18:07:07,017 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:07:07,018 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-18 18:07:07,023 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:07:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:07:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-18 18:07:07,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:07:07,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:07:07,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:07:07,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:07:07,077 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:07:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:07:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:07:07,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-18 18:07:07,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-18 18:07:07,266 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-18 18:07:07,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-18 18:07:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-18 18:07:07,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-18 18:07:07,290 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-18 18:07:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-18 18:07:07,587 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-18 18:07:07,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-18 18:07:07,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-18 18:07:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-18 18:07:07,603 INFO L225 Difference]: With dead ends: 45 [2019-01-18 18:07:07,615 INFO L226 Difference]: Without dead ends: 40 [2019-01-18 18:07:07,625 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 [2019-01-18 18:07:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-18 18:07:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-18 18:07:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-18 18:07:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-18 18:07:07,666 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-18 18:07:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-18 18:07:07,667 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-18 18:07:07,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-18 18:07:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-18 18:07:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-18 18:07:07,668 INFO L394 BasicCegarLoop]: Found error trace [2019-01-18 18:07:07,668 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-18 18:07:07,669 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-01-18 18:07:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:07:07,669 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-18 18:07:07,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-18 18:07:07,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:07:07,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:07:07,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-18 18:07:07,671 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-18 18:07:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:07:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:07:07,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:07:07,892 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-18 18:07:07,893 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-18 18:07:07,895 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-18 18:07:07,981 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-18 18:07:07,982 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-18 18:07:09,262 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-18 18:07:09,264 INFO L272 AbstractInterpreter]: Visited 3 different actions 5 times. Merged at 1 different actions 1 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 0 variables. [2019-01-18 18:07:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-18 18:07:09,270 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-18 18:07:09,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-18 18:07:09,271 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 [2019-01-18 18:07:09,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-18 18:07:09,285 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-18 18:07:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-18 18:07:09,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-18 18:07:09,543 WARN L181 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-18 18:07:09,576 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 [2019-01-18 18:07:09,598 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 [2019-01-18 18:07:09,614 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,616 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,618 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 [2019-01-18 18:07:09,634 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,636 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,641 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 [2019-01-18 18:07:09,688 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,712 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,761 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,761 INFO L303 Elim1Store]: Index analysis took 115 ms [2019-01-18 18:07:09,764 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 [2019-01-18 18:07:09,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,817 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,838 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,842 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,844 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,846 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 [2019-01-18 18:07:09,867 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,869 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,874 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,878 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,880 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,883 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 [2019-01-18 18:07:09,929 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,972 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:09,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,021 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,040 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,044 INFO L303 Elim1Store]: Index analysis took 155 ms [2019-01-18 18:07:10,047 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 [2019-01-18 18:07:10,080 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,106 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,127 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,150 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,175 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,203 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,217 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:10,240 INFO L303 Elim1Store]: Index analysis took 187 ms [2019-01-18 18:07:10,244 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 [2019-01-18 18:07:10,365 INFO L303 Elim1Store]: Index analysis took 108 ms [2019-01-18 18:07:10,367 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 [2019-01-18 18:07:10,369 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:10,933 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,109 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,280 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,381 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,430 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,480 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,513 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,543 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,578 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:11,683 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,685 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 [2019-01-18 18:07:11,765 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,766 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,767 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 [2019-01-18 18:07:11,874 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,875 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,876 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,877 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,878 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 [2019-01-18 18:07:11,973 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,975 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,976 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,977 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,979 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,994 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:11,995 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 [2019-01-18 18:07:12,166 WARN L181 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-01-18 18:07:12,209 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,225 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,226 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,227 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,228 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,230 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,231 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,232 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,235 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 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 [2019-01-18 18:07:12,364 WARN L181 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-18 18:07:12,407 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,410 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,412 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,413 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,413 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,414 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,416 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,417 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,418 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,422 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 [2019-01-18 18:07:12,575 WARN L181 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-18 18:07:12,593 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,594 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,595 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,596 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,597 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,598 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,599 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,601 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,602 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,603 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,608 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,610 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,612 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 [2019-01-18 18:07:12,935 WARN L181 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-18 18:07:12,942 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,943 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,944 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,946 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,947 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,948 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,949 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,951 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,952 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,955 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,956 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,957 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,958 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:12,960 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 [2019-01-18 18:07:12,961 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,042 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,127 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,212 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,311 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,415 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,519 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:13,615 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-18 18:07:14,019 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. [2019-01-18 18:07:14,020 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-18 18:07:14,162 INFO L701 Elim1Store]: detected not equals via solver [2019-01-18 18:07:14,164 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 [2019-01-18 18:07:14,165 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-18 18:07:14,335 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. [2019-01-18 18:07:14,336 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-18 18:07:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:07:14,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-18 18:07:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-18 18:07:14,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-18 18:07:14,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-18 18:07:14,432 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-18 18:07:14,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-18 18:07:14,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-18 18:07:14,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-18 18:07:14,433 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-18 18:07:37,696 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-18 18:07:37,699 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:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-01-18 18:07:37,703 INFO L168 Benchmark]: Toolchain (without parser) took 31521.72 ms. Allocated memory was 134.2 MB in the beginning and 310.9 MB in the end (delta: 176.7 MB). Free memory was 108.1 MB in the beginning and 158.0 MB in the end (delta: -49.9 MB). Peak memory consumption was 126.7 MB. Max. memory is 7.1 GB. [2019-01-18 18:07:37,704 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory is still 109.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-18 18:07:37,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.20 ms. Allocated memory is still 134.2 MB. Free memory was 108.1 MB in the beginning and 105.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-01-18 18:07:37,706 INFO L168 Benchmark]: Boogie Preprocessor took 54.98 ms. Allocated memory is still 134.2 MB. Free memory was 105.7 MB in the beginning and 104.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-01-18 18:07:37,707 INFO L168 Benchmark]: RCFGBuilder took 568.61 ms. Allocated memory is still 134.2 MB. Free memory was 104.2 MB in the beginning and 89.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-01-18 18:07:37,708 INFO L168 Benchmark]: TraceAbstraction took 30823.44 ms. Allocated memory was 134.2 MB in the beginning and 310.9 MB in the end (delta: 176.7 MB). Free memory was 89.6 MB in the beginning and 158.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2019-01-18 18:07:37,712 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 0.22 ms. Allocated memory is still 134.2 MB. Free memory is still 109.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.20 ms. Allocated memory is still 134.2 MB. Free memory was 108.1 MB in the beginning and 105.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.98 ms. Allocated memory is still 134.2 MB. Free memory was 105.7 MB in the beginning and 104.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 568.61 ms. Allocated memory is still 134.2 MB. Free memory was 104.2 MB in the beginning and 89.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30823.44 ms. Allocated memory was 134.2 MB in the beginning and 310.9 MB in the end (delta: 176.7 MB). Free memory was 89.6 MB in the beginning and 158.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 108.3 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:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...