java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf -i ../../../trunk/examples/programs/toy/nonlinear/Power3-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:20:21,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:20:21,744 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:20:21,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:20:21,757 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:20:21,758 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:20:21,760 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:20:21,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:20:21,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:20:21,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:20:21,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 18:20:21,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 18:20:21,767 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 18:20:21,769 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 18:20:21,771 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 18:20:21,771 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 18:20:21,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 18:20:21,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 18:20:21,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 18:20:21,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 18:20:21,790 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 18:20:21,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 18:20:21,796 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-12-03 18:20:21,818 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 18:20:21,838 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:20:21,838 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:20:21,839 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:20:21,839 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:20:21,839 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:20:21,840 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:20:21,840 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:20:21,840 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:20:21,840 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:20:21,840 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:20:21,841 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:20:21,841 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:20:21,841 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:20:21,842 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:20:21,842 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:20:21,842 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:20:21,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:20:21,843 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:20:21,843 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:20:21,843 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:20:21,843 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:20:21,844 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:20:21,844 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:20:21,844 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:20:21,844 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:20:21,844 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:20:21,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:20:21,845 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:20:21,845 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:20:21,845 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:20:21,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:20:21,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:20:21,846 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:20:21,846 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:20:21,846 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:20:21,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:20:21,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:20:21,847 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:20:21,847 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:20:21,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:20:21,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:20:21,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:20:21,901 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:20:21,902 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:20:21,903 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power3-Safe.bpl [2018-12-03 18:20:21,904 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power3-Safe.bpl' [2018-12-03 18:20:21,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:20:21,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:20:21,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:20:21,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:20:21,948 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:20:21,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:21,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:21,986 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 18:20:21,987 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 18:20:21,987 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 18:20:21,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:20:21,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:20:21,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:20:21,991 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:20:22,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/1) ... [2018-12-03 18:20:22,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:20:22,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:20:22,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:20:22,021 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:20:22,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (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 [2018-12-03 18:20:22,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure power given in one single declaration [2018-12-03 18:20:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure power [2018-12-03 18:20:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure power [2018-12-03 18:20:22,176 WARN L615 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-12-03 18:20:22,316 INFO L272 CfgBuilder]: Using library mode [2018-12-03 18:20:22,317 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 18:20:22,317 INFO L202 PluginConnector]: Adding new model Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:20:22 BoogieIcfgContainer [2018-12-03 18:20:22,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:20:22,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:20:22,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:20:22,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:20:22,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:20:21" (1/2) ... [2018-12-03 18:20:22,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648e344 and model type Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:20:22, skipping insertion in model container [2018-12-03 18:20:22,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power3-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:20:22" (2/2) ... [2018-12-03 18:20:22,329 INFO L112 eAbstractionObserver]: Analyzing ICFG Power3-Safe.bpl [2018-12-03 18:20:22,340 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:20:22,349 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 18:20:22,369 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 18:20:22,413 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:20:22,413 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:20:22,413 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:20:22,413 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:20:22,414 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:20:22,414 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:20:22,414 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:20:22,414 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:20:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 18:20:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 18:20:22,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:20:22,449 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 18:20:22,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-12-03 18:20:22,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:20:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash 924708, now seen corresponding path program 1 times [2018-12-03 18:20:22,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:20:22,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:20:22,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:22,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:20:22,525 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:20:22,560 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 18:20:22,560 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 18:20:22,560 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 18:20:22,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:22,576 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 18:20:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:20:22,614 INFO L193 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-12-03 18:20:22,615 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 18:20:22,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:20:22,616 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 18:20:22,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:22,631 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 18:20:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:20:22,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 18:20:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:20:22,917 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 18:20:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:20:25,128 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:20:25,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-12-03 18:20:25,128 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:20:25,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 18:20:25,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 18:20:25,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2018-12-03 18:20:25,151 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 5 states. [2018-12-03 18:20:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:20:25,256 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-12-03 18:20:25,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 18:20:25,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-12-03 18:20:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:20:25,270 INFO L225 Difference]: With dead ends: 10 [2018-12-03 18:20:25,270 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 18:20:25,274 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2018-12-03 18:20:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 18:20:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 18:20:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 18:20:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 18:20:25,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-12-03 18:20:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:20:25,311 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 18:20:25,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 18:20:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 18:20:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 18:20:25,312 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:20:25,312 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-03 18:20:25,312 INFO L423 AbstractCegarLoop]: === Iteration 2 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-12-03 18:20:25,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:20:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash 28663973, now seen corresponding path program 1 times [2018-12-03 18:20:25,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:20:25,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:20:25,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:25,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:20:25,315 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:20:25,318 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 18:20:25,318 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 18:20:25,318 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 18:20:25,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:25,337 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 18:20:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:20:25,381 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 6 with the following transitions: [2018-12-03 18:20:25,384 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9] [2018-12-03 18:20:25,459 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:20:25,459 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:20:25,774 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 18:20:25,776 INFO L272 AbstractInterpreter]: Visited 5 different actions 17 times. Merged at 3 different actions 11 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 18:20:25,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:20:25,799 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 18:20:25,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:20:25,800 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 18:20:25,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:25,812 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 18:20:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:20:25,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 18:20:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:20:26,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 18:20:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:20:27,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 18:20:27,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2018-12-03 18:20:27,362 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 18:20:27,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-03 18:20:27,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-03 18:20:27,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-12-03 18:20:27,363 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 10 states. [2018-12-03 18:20:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:20:27,626 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2018-12-03 18:20:27,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 18:20:27,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 5 [2018-12-03 18:20:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:20:27,629 INFO L225 Difference]: With dead ends: 13 [2018-12-03 18:20:27,629 INFO L226 Difference]: Without dead ends: 9 [2018-12-03 18:20:27,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2018-12-03 18:20:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-03 18:20:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-03 18:20:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-03 18:20:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-12-03 18:20:27,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2018-12-03 18:20:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:20:27,635 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-12-03 18:20:27,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-03 18:20:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-12-03 18:20:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-03 18:20:27,636 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:20:27,636 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2018-12-03 18:20:27,637 INFO L423 AbstractCegarLoop]: === Iteration 3 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-12-03 18:20:27,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:20:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash -772033436, now seen corresponding path program 2 times [2018-12-03 18:20:27,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:20:27,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:20:27,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:20:27,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:20:27,639 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:20:27,643 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 18:20:27,643 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 18:20:27,643 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 18:20:27,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 18:20:27,659 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 18:20:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:20:27,696 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 18:20:27,697 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 18:20:27,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:20:27,697 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 18:20:27,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-03 18:20:27,709 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-03 18:20:27,731 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-03 18:20:27,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 18:20:27,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 18:20:28,133 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-12-03 18:20:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:20:28,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 18:20:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 18:20:36,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 18:20:36,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2018-12-03 18:20:36,557 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 18:20:36,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-03 18:20:36,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-03 18:20:36,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=164, Unknown=2, NotChecked=0, Total=240 [2018-12-03 18:20:36,559 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 16 states. [2018-12-03 18:20:44,470 WARN L180 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 52 [2018-12-03 18:20:51,112 WARN L180 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 40 [2018-12-03 18:21:02,124 WARN L180 SmtUtils]: Spent 10.54 s on a formula simplification that was a NOOP. DAG size: 50 [2018-12-03 18:21:09,503 WARN L180 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-12-03 18:21:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:21:09,510 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2018-12-03 18:21:09,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-03 18:21:09,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 8 [2018-12-03 18:21:09,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:21:09,512 INFO L225 Difference]: With dead ends: 18 [2018-12-03 18:21:09,512 INFO L226 Difference]: Without dead ends: 15 [2018-12-03 18:21:09,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=194, Invalid=350, Unknown=8, NotChecked=0, Total=552 [2018-12-03 18:21:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-03 18:21:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-03 18:21:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 18:21:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-03 18:21:09,523 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2018-12-03 18:21:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:21:09,524 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-03 18:21:09,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-03 18:21:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-03 18:21:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-03 18:21:09,525 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:21:09,525 INFO L402 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2018-12-03 18:21:09,525 INFO L423 AbstractCegarLoop]: === Iteration 4 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-12-03 18:21:09,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:21:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash 449420484, now seen corresponding path program 3 times [2018-12-03 18:21:09,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:21:09,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:21:09,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 18:21:09,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:21:09,528 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:21:09,531 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 18:21:09,531 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 18:21:09,531 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 18:21:09,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 18:21:09,546 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 18:21:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:21:10,381 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 18:21:10,382 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 18:21:10,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 18:21:10,382 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 18:21:10,394 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-03 18:21:10,394 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-03 18:21:10,416 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-03 18:21:10,417 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 18:21:10,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 18:21:22,741 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_power_res_24 Int) (v_power_res_25 Int) (v_power_res_20 Int) (v_power_res_21 Int) (v_power_res_22 Int) (v_power_res_23 Int)) (and (>= v_power_res_24 (* c_power_a v_power_res_23)) (>= v_power_res_23 (* c_power_a v_power_res_22)) (>= v_power_res_21 (* c_power_a v_power_res_20)) (>= v_power_res_22 (* c_power_a v_power_res_21)) (>= c_power_res (* c_power_a v_power_res_25)) (<= c_power_a v_power_res_20) (>= v_power_res_25 (* c_power_a v_power_res_24)))) (<= c_power_b (+ c_power_tmp 7)) (<= 2 c_power_a)) is different from false [2018-12-03 18:21:31,009 WARN L180 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-12-03 18:21:43,622 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-12-03 18:22:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 43 refuted. 2 times theorem prover too weak. 0 trivial. 10 not checked. [2018-12-03 18:22:00,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 18:22:25,559 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-12-03 18:22:51,069 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-03 18:22:51,270 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 18:22:51,272 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)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-12-03 18:22:51,278 INFO L168 Benchmark]: Toolchain (without parser) took 149332.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 383.4 MB). Peak memory consumption was 383.4 MB. Max. memory is 7.1 GB. [2018-12-03 18:22:51,280 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:22:51,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.42 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:22:51,282 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 18:22:51,284 INFO L168 Benchmark]: RCFGBuilder took 297.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-12-03 18:22:51,285 INFO L168 Benchmark]: TraceAbstraction took 148957.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 362.2 MB). Peak memory consumption was 362.2 MB. Max. memory is 7.1 GB. [2018-12-03 18:22:51,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.42 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 297.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 148957.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 362.2 MB). Peak memory consumption was 362.2 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)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...