java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f57a05f [2019-01-07 21:32:26,267 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-07 21:32:26,269 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-07 21:32:26,286 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-07 21:32:26,341 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-07 21:32:26,352 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-07 21:32:26,353 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-07 21:32:26,354 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-07 21:32:26,354 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-07 21:32:26,354 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-07 21:32:26,357 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-07 21:32:26,357 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-07 21:32:26,357 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-07 21:32:26,357 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-07 21:32:26,358 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-07 21:32:26,358 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-07 21:32:26,358 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-07 21:32:26,358 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-07 21:32:26,358 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-07 21:32:26,359 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-07 21:32:26,359 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-07 21:32:26,359 INFO L133 SettingsManager]: * Use SBE=true [2019-01-07 21:32:26,360 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-07 21:32:26,360 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-07 21:32:26,360 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-07 21:32:26,360 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-07 21:32:26,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-07 21:32:26,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-07 21:32:26,361 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-07 21:32:26,361 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-07 21:32:26,361 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-07 21:32:26,361 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-07 21:32:26,361 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-07 21:32:26,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-07 21:32:26,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-07 21:32:26,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-07 21:32:26,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-07 21:32:26,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-07 21:32:26,363 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-07 21:32:26,363 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-07 21:32:26,363 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-07 21:32:26,363 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-07 21:32:26,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-07 21:32:26,363 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-07 21:32:26,364 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-07 21:32:26,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-07 21:32:26,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-07 21:32:26,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-07 21:32:26,434 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-07 21:32:26,434 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-07 21:32:26,435 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl [2019-01-07 21:32:26,435 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-10-unlimited.bpl' [2019-01-07 21:32:26,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-07 21:32:26,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-07 21:32:26,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-07 21:32:26,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-07 21:32:26,500 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-07 21:32:26,518 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,536 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-07 21:32:26,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-07 21:32:26,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-07 21:32:26,582 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-07 21:32:26,596 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,597 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,607 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,607 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,617 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,626 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,628 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 07.01 09:32:26" (1/1) ... [2019-01-07 21:32:26,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-07 21:32:26,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-07 21:32:26,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-07 21:32:26,642 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-07 21:32:26,643 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 07.01 09:32:26" (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 [2019-01-07 21:32:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-07 21:32:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-07 21:32:27,178 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-07 21:32:27,179 INFO L286 CfgBuilder]: Removed 23 assue(true) statements. [2019-01-07 21:32:27,180 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 09:32:27 BoogieIcfgContainer [2019-01-07 21:32:27,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-07 21:32:27,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-07 21:32:27,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-07 21:32:27,185 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-07 21:32:27,185 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 07.01 09:32:26" (1/2) ... [2019-01-07 21:32:27,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a85cc and model type speedup-poc-dd-10-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 09:32:27, skipping insertion in model container [2019-01-07 21:32:27,187 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 07.01 09:32:27" (2/2) ... [2019-01-07 21:32:27,188 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-10-unlimited.bpl [2019-01-07 21:32:27,199 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-07 21:32:27,209 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-01-07 21:32:27,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-01-07 21:32:27,262 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-07 21:32:27,262 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-07 21:32:27,262 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-07 21:32:27,262 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-07 21:32:27,262 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-07 21:32:27,263 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-07 21:32:27,263 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-07 21:32:27,263 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-07 21:32:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-01-07 21:32:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-07 21:32:27,286 INFO L394 BasicCegarLoop]: Found error trace [2019-01-07 21:32:27,287 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-07 21:32:27,290 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-07 21:32:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 21:32:27,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1004, now seen corresponding path program 1 times [2019-01-07 21:32:27,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-07 21:32:27,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:32:27,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 21:32:27,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:32:27,360 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-07 21:32:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 21:32:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:32:27,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-07 21:32:27,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-07 21:32:27,550 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-07 21:32:27,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-07 21:32:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-07 21:32:27,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-07 21:32:27,568 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-01-07 21:32:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-07 21:32:27,951 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2019-01-07 21:32:27,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-07 21:32:27,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-07 21:32:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-07 21:32:27,968 INFO L225 Difference]: With dead ends: 45 [2019-01-07 21:32:27,968 INFO L226 Difference]: Without dead ends: 40 [2019-01-07 21:32:27,972 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 [2019-01-07 21:32:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-01-07 21:32:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2019-01-07 21:32:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-01-07 21:32:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 41 transitions. [2019-01-07 21:32:28,015 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 41 transitions. Word has length 2 [2019-01-07 21:32:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-07 21:32:28,017 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 41 transitions. [2019-01-07 21:32:28,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-07 21:32:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 41 transitions. [2019-01-07 21:32:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-07 21:32:28,018 INFO L394 BasicCegarLoop]: Found error trace [2019-01-07 21:32:28,018 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-07 21:32:28,019 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT]=== [2019-01-07 21:32:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 21:32:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash 30392, now seen corresponding path program 1 times [2019-01-07 21:32:28,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-07 21:32:28,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:32:28,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 21:32:28,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 21:32:28,021 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-07 21:32:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 21:32:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:32:28,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-07 21:32:28,241 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-07 21:32:28,242 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-07 21:32:28,244 INFO L207 CegarAbsIntRunner]: [0], [18], [43] [2019-01-07 21:32:28,282 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-07 21:32:28,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-07 21:32:28,366 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-07 21:32:28,367 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 104 root evaluator evaluations with a maximum evaluation depth of 2. Performed 104 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-07 21:32:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 21:32:28,375 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-07 21:32:28,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-07 21:32:28,375 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 [2019-01-07 21:32:28,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 21:32:28,389 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-07 21:32:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 21:32:28,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-07 21:32:28,735 WARN L181 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-07 21:32:28,767 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 [2019-01-07 21:32:28,786 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 [2019-01-07 21:32:28,827 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,845 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,847 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 [2019-01-07 21:32:28,860 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,862 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,864 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,867 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 [2019-01-07 21:32:28,915 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,928 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,930 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,932 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,936 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 [2019-01-07 21:32:28,969 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:28,994 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,031 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,034 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 [2019-01-07 21:32:29,093 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,203 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,204 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,207 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,209 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,211 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,211 INFO L303 Elim1Store]: Index analysis took 163 ms [2019-01-07 21:32:29,216 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 [2019-01-07 21:32:29,251 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,265 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,315 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,340 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,355 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,357 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,357 INFO L303 Elim1Store]: Index analysis took 131 ms [2019-01-07 21:32:29,360 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 [2019-01-07 21:32:29,383 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,385 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,387 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,390 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,392 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,395 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,396 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:29,404 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 [2019-01-07 21:32:29,490 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 [2019-01-07 21:32:29,493 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,144 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,391 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,523 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,635 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,683 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,730 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,763 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,792 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,825 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:30,904 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:30,908 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 [2019-01-07 21:32:31,019 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,020 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,022 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 [2019-01-07 21:32:31,154 WARN L181 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-01-07 21:32:31,201 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,224 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,250 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,272 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,272 INFO L303 Elim1Store]: Index analysis took 114 ms [2019-01-07 21:32:31,274 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 [2019-01-07 21:32:31,392 WARN L181 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-01-07 21:32:31,405 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,406 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,407 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,408 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,425 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,427 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 [2019-01-07 21:32:31,866 WARN L181 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-01-07 21:32:31,910 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,918 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,920 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,923 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,926 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,930 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,931 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,932 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:31,934 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 [2019-01-07 21:32:32,119 WARN L181 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-01-07 21:32:32,179 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,202 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,223 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,234 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,236 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,237 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,238 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,239 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,240 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,240 INFO L303 Elim1Store]: Index analysis took 118 ms [2019-01-07 21:32:32,243 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 [2019-01-07 21:32:32,405 WARN L181 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-01-07 21:32:32,434 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,435 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,436 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,437 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,443 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,444 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,446 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,447 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,448 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,450 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,451 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,454 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,456 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 [2019-01-07 21:32:32,684 WARN L181 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2019-01-07 21:32:32,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,723 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,724 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,726 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,728 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,729 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,730 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,732 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,735 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,735 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,736 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,739 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,740 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:32,745 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 [2019-01-07 21:32:32,747 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-01-07 21:32:32,847 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:32,947 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:33,047 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:33,146 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:33,248 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:33,388 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:33,514 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-07 21:32:33,693 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. [2019-01-07 21:32:33,694 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 10 variables, input treesize:182, output treesize:195 [2019-01-07 21:32:33,831 WARN L181 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-01-07 21:32:33,872 INFO L701 Elim1Store]: detected not equals via solver [2019-01-07 21:32:33,874 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 [2019-01-07 21:32:33,875 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-07 21:32:34,081 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. [2019-01-07 21:32:34,082 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:200, output treesize:158 [2019-01-07 21:32:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:32:34,109 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-07 21:32:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 21:32:34,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-07 21:32:34,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-07 21:32:34,145 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-07 21:32:34,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-07 21:32:34,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-07 21:32:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-01-07 21:32:34,149 INFO L87 Difference]: Start difference. First operand 22 states and 41 transitions. Second operand 6 states. [2019-01-07 21:32:56,581 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-01-07 21:32:56,583 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 [2019-01-07 21:32:56,587 INFO L168 Benchmark]: Toolchain (without parser) took 30090.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -141.5 MB). Peak memory consumption was 570.5 MB. Max. memory is 7.1 GB. [2019-01-07 21:32:56,589 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-07 21:32:56,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.58 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-07 21:32:56,590 INFO L168 Benchmark]: Boogie Preprocessor took 59.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-07 21:32:56,590 INFO L168 Benchmark]: RCFGBuilder took 539.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-01-07 21:32:56,591 INFO L168 Benchmark]: TraceAbstraction took 29405.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -162.6 MB). Peak memory consumption was 549.3 MB. Max. memory is 7.1 GB. [2019-01-07 21:32:56,595 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 81.58 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.50 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 539.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29405.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -162.6 MB). Peak memory consumption was 549.3 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...