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_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:38:30,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:38:30,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:38:30,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-03-04 16:38:30,908 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-03-04 16:38:30,909 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-03-04 16:38:30,911 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-03-04 16:38:30,912 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-03-04 16:38:30,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-03-04 16:38:30,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-03-04 16:38:30,916 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-03-04 16:38:30,941 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_oct.epf [2019-03-04 16:38:30,954 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:38:30,954 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:38:30,955 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:38:30,955 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:38:30,956 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:38:30,956 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:38:30,956 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:38:30,956 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:38:30,957 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:38:30,957 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:38:30,957 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2019-03-04 16:38:30,957 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:38:30,957 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:38:30,958 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:38:30,958 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:38:30,958 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:38:30,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:38:30,959 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:38:30,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:38:30,959 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:38:30,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:38:30,960 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:38:30,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:38:30,960 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:38:30,960 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:38:30,960 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:38:30,961 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:38:30,961 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:38:30,961 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:38:30,961 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:38:30,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:38:30,962 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:38:30,962 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:38:30,962 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:38:30,962 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-03-04 16:38:30,963 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:38:30,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:38:30,963 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:38:30,963 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:38:30,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:38:31,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:38:31,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:38:31,016 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:38:31,017 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:38:31,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-03-04 16:38:31,018 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-03-04 16:38:31,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:38:31,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:38:31,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:38:31,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:38:31,081 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:38:31,098 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,112 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:38:31,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:38:31,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:38:31,152 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:38:31,163 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,164 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,167 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,168 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,175 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,186 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,188 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 04.03 04:38:31" (1/1) ... [2019-03-04 16:38:31,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:38:31,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:38:31,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:38:31,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:38:31,201 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 04.03 04:38:31" (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 [2019-03-04 16:38:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-03-04 16:38:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-03-04 16:38:31,718 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-03-04 16:38:31,719 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-03-04 16:38:31,720 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:38:31 BoogieIcfgContainer [2019-03-04 16:38:31,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:38:31,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:38:31,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:38:31,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:38:31,725 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 04.03 04:38:31" (1/2) ... [2019-03-04 16:38:31,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59956b13 and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:38:31, skipping insertion in model container [2019-03-04 16:38:31,726 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 04.03 04:38:31" (2/2) ... [2019-03-04 16:38:31,728 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-03-04 16:38:31,738 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:38:31,746 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-03-04 16:38:31,763 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-03-04 16:38:31,795 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:38:31,796 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:38:31,796 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:38:31,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:38:31,796 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:38:31,797 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:38:31,797 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:38:31,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:38:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-03-04 16:38:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-03-04 16:38:31,820 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:38:31,821 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-03-04 16:38:31,827 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:38:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:38:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-03-04 16:38:31,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:38:31,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:38:31,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:38:31,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:38:31,887 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:38:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:38:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:38:32,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:38:32,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-03-04 16:38:32,072 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-03-04 16:38:32,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:38:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:38:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:38:32,091 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-03-04 16:38:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:38:32,415 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-03-04 16:38:32,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:38:32,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-03-04 16:38:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:38:32,431 INFO L225 Difference]: With dead ends: 45 [2019-03-04 16:38:32,431 INFO L226 Difference]: Without dead ends: 40 [2019-03-04 16:38:32,449 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 [2019-03-04 16:38:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-03-04 16:38:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-03-04 16:38:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-03-04 16:38:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-03-04 16:38:32,489 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-03-04 16:38:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:38:32,490 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-03-04 16:38:32,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:38:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-03-04 16:38:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:38:32,491 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:38:32,491 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:38:32,491 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:38:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:38:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-03-04 16:38:32,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-03-04 16:38:32,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:38:32,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:38:32,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:38:32,493 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-03-04 16:38:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:38:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:38:32,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:38:32,718 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-03-04 16:38:32,719 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-03-04 16:38:32,721 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-03-04 16:38:32,790 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2019-03-04 16:38:32,790 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2019-03-04 16:38:32,860 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-03-04 16:38:32,861 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-03-04 16:38:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:38:32,867 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-03-04 16:38:32,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:38:32,867 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 [2019-03-04 16:38:32,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:38:32,882 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-03-04 16:38:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:38:32,902 WARN L254 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 19 conjunts are in the unsatisfiable core [2019-03-04 16:38:32,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:38:33,063 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2019-03-04 16:38:33,079 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,082 INFO L453 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 38 [2019-03-04 16:38:33,099 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,101 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,104 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,107 INFO L453 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 40 [2019-03-04 16:38:33,121 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,122 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,124 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,126 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,137 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,141 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,143 INFO L453 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 42 [2019-03-04 16:38:33,166 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,168 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,171 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,172 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,174 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,175 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,177 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,179 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,181 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,183 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,187 INFO L453 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 44 [2019-03-04 16:38:33,221 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,222 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,224 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,226 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,232 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,235 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,238 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,241 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,243 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,246 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,248 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,253 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,255 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,256 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,258 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,262 INFO L453 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 46 [2019-03-04 16:38:33,312 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,313 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,314 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,316 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,318 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,338 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,360 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,382 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,407 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,415 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,416 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,422 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,423 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,424 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,425 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,439 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,440 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,445 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,447 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,448 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,450 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,450 INFO L301 Elim1Store]: Index analysis took 148 ms [2019-03-04 16:38:33,455 INFO L453 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 48 [2019-03-04 16:38:33,476 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,477 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,478 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,482 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,486 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,489 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,491 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,492 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,494 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,495 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,497 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,525 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,536 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,539 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,542 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,543 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,544 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,545 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,547 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,548 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,550 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,551 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,553 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,556 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,558 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,559 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,560 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,561 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,566 INFO L453 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 50 [2019-03-04 16:38:33,594 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,597 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,599 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,601 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,603 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,605 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,609 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,610 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,611 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,634 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,636 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,637 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,638 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,639 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,640 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,642 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,643 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,663 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,687 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,709 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,732 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,751 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,753 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,755 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,758 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,759 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,760 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,761 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,762 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,764 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,765 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,767 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,769 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,770 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,773 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,775 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,775 INFO L301 Elim1Store]: Index analysis took 184 ms [2019-03-04 16:38:33,780 INFO L453 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 52 [2019-03-04 16:38:33,791 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,792 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,796 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,798 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,800 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,801 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,803 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,804 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,808 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,809 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,810 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,812 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,814 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,819 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,820 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,822 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,824 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,826 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,829 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,854 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,868 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,873 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,874 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,875 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,876 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,877 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,879 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,897 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,919 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,942 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,966 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:33,988 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:34,012 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:34,038 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:34,060 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:34,079 INFO L188 IndexEqualityManager]: detected not equals via solver [2019-03-04 16:38:34,079 INFO L301 Elim1Store]: Index analysis took 289 ms [2019-03-04 16:38:34,379 INFO L453 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 9 new quantified variables, introduced 18 case distinctions, treesize of input 52 treesize of output 78 [2019-03-04 16:38:34,382 INFO L309 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,412 INFO L309 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,452 INFO L309 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,485 INFO L309 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,518 INFO L309 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,545 INFO L309 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,583 INFO L309 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,615 INFO L309 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,659 INFO L309 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:34,689 INFO L309 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,025 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-03-04 16:38:35,027 INFO L309 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,045 INFO L309 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,067 INFO L309 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,080 INFO L309 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,128 INFO L309 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,239 INFO L309 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,339 INFO L309 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,497 INFO L309 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,603 INFO L309 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-03-04 16:38:35,749 INFO L309 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. [2019-03-04 16:38:35,749 INFO L209 ElimStorePlain]: Needed 20 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-03-04 16:38:35,883 INFO L453 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2019-03-04 16:38:35,883 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:38:36,135 INFO L309 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. [2019-03-04 16:38:36,136 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:160 [2019-03-04 16:38:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:38:36,175 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-03-04 16:38:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:38:36,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-03-04 16:38:36,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-03-04 16:38:36,212 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-03-04 16:38:36,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:38:36,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:38:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-03-04 16:38:36,214 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-03-04 16:38:36,433 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2019-03-04 16:38:58,711 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-03-04 16:38:58,713 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 [2019-03-04 16:38:58,717 INFO L168 Benchmark]: Toolchain (without parser) took 27639.08 ms. Allocated memory was 140.0 MB in the beginning and 253.8 MB in the end (delta: 113.8 MB). Free memory was 109.3 MB in the beginning and 196.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-03-04 16:38:58,722 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory is still 110.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:38:58,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.90 ms. Allocated memory is still 140.0 MB. Free memory was 109.1 MB in the beginning and 106.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-03-04 16:38:58,723 INFO L168 Benchmark]: Boogie Preprocessor took 42.85 ms. Allocated memory is still 140.0 MB. Free memory was 106.7 MB in the beginning and 105.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:38:58,724 INFO L168 Benchmark]: RCFGBuilder took 520.63 ms. Allocated memory is still 140.0 MB. Free memory was 105.3 MB in the beginning and 91.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-03-04 16:38:58,725 INFO L168 Benchmark]: TraceAbstraction took 26994.70 ms. Allocated memory was 140.0 MB in the beginning and 253.8 MB in the end (delta: 113.8 MB). Free memory was 90.8 MB in the beginning and 196.4 MB in the end (delta: -105.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2019-03-04 16:38:58,730 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 0.23 ms. Allocated memory is still 140.0 MB. Free memory is still 110.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.90 ms. Allocated memory is still 140.0 MB. Free memory was 109.1 MB in the beginning and 106.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.85 ms. Allocated memory is still 140.0 MB. Free memory was 106.7 MB in the beginning and 105.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.63 ms. Allocated memory is still 140.0 MB. Free memory was 105.3 MB in the beginning and 91.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26994.70 ms. Allocated memory was 140.0 MB in the beginning and 253.8 MB in the end (delta: 113.8 MB). Free memory was 90.8 MB in the beginning and 196.4 MB in the end (delta: -105.5 MB). Peak memory consumption was 8.2 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...