java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 19:38:07,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 19:38:07,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 19:38:07,914 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 19:38:07,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 19:38:07,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 19:38:07,918 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 19:38:07,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 19:38:07,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 19:38:07,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 19:38:07,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 19:38:07,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 19:38:07,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 19:38:07,938 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 19:38:07,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 19:38:07,940 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 19:38:07,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 19:38:07,947 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 19:38:07,950 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 19:38:07,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 19:38:07,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 19:38:07,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 19:38:07,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 19:38:07,961 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 19:38:07,962 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 19:38:07,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 19:38:07,963 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 19:38:07,965 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 19:38:07,966 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 19:38:07,968 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 19:38:07,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 19:38:07,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 19:38:07,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 19:38:07,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 19:38:07,972 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 19:38:07,973 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 19:38:07,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-03 19:38:07,994 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 19:38:07,994 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 19:38:07,995 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 19:38:07,995 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 19:38:07,996 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 19:38:07,996 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 19:38:07,996 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 19:38:07,996 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 19:38:07,996 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 19:38:07,997 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 19:38:07,997 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 19:38:07,997 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 19:38:07,998 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 19:38:07,998 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 19:38:07,998 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 19:38:07,999 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 19:38:07,999 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 19:38:07,999 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 19:38:07,999 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 19:38:08,001 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 19:38:08,001 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 19:38:08,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 19:38:08,002 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 19:38:08,002 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 19:38:08,002 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 19:38:08,002 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 19:38:08,002 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 19:38:08,003 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 19:38:08,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 19:38:08,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 19:38:08,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 19:38:08,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:38:08,004 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 19:38:08,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 19:38:08,004 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 19:38:08,004 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 19:38:08,004 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 19:38:08,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 19:38:08,006 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 19:38:08,006 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 19:38:08,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 19:38:08,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 19:38:08,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 19:38:08,080 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 19:38:08,080 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 19:38:08,081 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl [2018-12-03 19:38:08,081 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl' [2018-12-03 19:38:08,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 19:38:08,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 19:38:08,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 19:38:08,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 19:38:08,124 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 19:38:08,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,158 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 19:38:08,159 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 19:38:08,159 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 19:38:08,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 19:38:08,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 19:38:08,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 19:38:08,164 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 19:38:08,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/1) ... [2018-12-03 19:38:08,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 19:38:08,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 19:38:08,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 19:38:08,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 19:38:08,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (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 19:38:08,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure power given in one single declaration [2018-12-03 19:38:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure power [2018-12-03 19:38:08,262 INFO L138 BoogieDeclarations]: Found implementation of procedure power [2018-12-03 19:38:08,320 WARN L615 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-12-03 19:38:08,441 INFO L272 CfgBuilder]: Using library mode [2018-12-03 19:38:08,441 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 19:38:08,443 INFO L202 PluginConnector]: Adding new model Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:38:08 BoogieIcfgContainer [2018-12-03 19:38:08,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 19:38:08,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 19:38:08,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 19:38:08,449 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 19:38:08,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:38:08" (1/2) ... [2018-12-03 19:38:08,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716cd619 and model type Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:38:08, skipping insertion in model container [2018-12-03 19:38:08,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:38:08" (2/2) ... [2018-12-03 19:38:08,452 INFO L112 eAbstractionObserver]: Analyzing ICFG Power1-Safe.bpl [2018-12-03 19:38:08,463 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 19:38:08,473 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 19:38:08,492 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 19:38:08,532 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 19:38:08,532 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 19:38:08,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 19:38:08,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 19:38:08,532 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 19:38:08,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 19:38:08,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 19:38:08,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 19:38:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 19:38:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 19:38:08,554 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:38:08,555 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 19:38:08,557 INFO L423 AbstractCegarLoop]: === Iteration 1 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-12-03 19:38:08,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:38:08,563 INFO L82 PathProgramCache]: Analyzing trace with hash 924708, now seen corresponding path program 1 times [2018-12-03 19:38:08,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:38:08,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:38:08,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:38:08,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:38:08,614 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:38:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:38:08,701 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 19:38:08,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:38:08,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 19:38:08,704 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:38:08,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:38:08,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:38:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:38:08,723 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 19:38:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:38:08,766 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-12-03 19:38:08,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:38:08,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-12-03 19:38:08,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:38:08,785 INFO L225 Difference]: With dead ends: 10 [2018-12-03 19:38:08,785 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 19:38:08,789 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:38:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 19:38:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 19:38:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 19:38:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 19:38:08,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-12-03 19:38:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:38:08,827 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 19:38:08,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:38:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 19:38:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 19:38:08,828 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:38:08,828 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-03 19:38:08,828 INFO L423 AbstractCegarLoop]: === Iteration 2 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-12-03 19:38:08,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:38:08,829 INFO L82 PathProgramCache]: Analyzing trace with hash 28663973, now seen corresponding path program 1 times [2018-12-03 19:38:08,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:38:08,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:38:08,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:38:08,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:38:08,830 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:38:08,835 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 19:38:08,836 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 19:38:08,836 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 19:38:08,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:38:08,863 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 19:38:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:38:08,910 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 6 with the following transitions: [2018-12-03 19:38:08,912 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [9] [2018-12-03 19:38:09,012 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 19:38:09,012 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 19:38:09,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 19:38:09,179 INFO L272 AbstractInterpreter]: Visited 5 different actions 14 times. Merged at 2 different actions 6 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 19:38:09,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:38:09,193 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 19:38:09,233 INFO L227 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 50% of their original sizes. [2018-12-03 19:38:09,233 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 19:38:09,327 INFO L418 sIntCurrentIteration]: We unified 4 AI predicates to 4 [2018-12-03 19:38:09,327 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 19:38:09,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:38:09,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 19:38:09,328 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:38:09,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 19:38:09,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 19:38:09,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-03 19:38:09,331 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-12-03 19:38:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:38:09,392 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2018-12-03 19:38:09,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 19:38:09,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-12-03 19:38:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:38:09,392 INFO L225 Difference]: With dead ends: 6 [2018-12-03 19:38:09,392 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 19:38:09,394 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-03 19:38:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 19:38:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 19:38:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 19:38:09,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 19:38:09,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-12-03 19:38:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:38:09,395 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 19:38:09,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 19:38:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 19:38:09,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 19:38:09,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 19:38:09,560 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 15 [2018-12-03 19:38:09,564 INFO L444 ceAbstractionStarter]: At program point L18-1(lines 18 22) the Hoare annotation is: (and (<= 0 (* 2 power_tmp)) (<= 2 (* 2 power_res)) (<= 2 (* 2 power_a)) (<= 0 (* 2 power_b))) [2018-12-03 19:38:09,564 INFO L448 ceAbstractionStarter]: For program point powerErr0ENSURES_VIOLATIONPOST_CONDITION(lines 9 11) no Hoare annotation was computed. [2018-12-03 19:38:09,564 INFO L448 ceAbstractionStarter]: For program point $Ultimate##0(lines 9 24) no Hoare annotation was computed. [2018-12-03 19:38:09,564 INFO L448 ceAbstractionStarter]: For program point powerEXIT(lines 9 24) no Hoare annotation was computed. [2018-12-03 19:38:09,564 INFO L448 ceAbstractionStarter]: For program point powerENTRY(lines 9 24) no Hoare annotation was computed. [2018-12-03 19:38:09,565 INFO L448 ceAbstractionStarter]: For program point powerFINAL(lines 9 24) no Hoare annotation was computed. [2018-12-03 19:38:09,572 INFO L202 PluginConnector]: Adding new model Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:38:09 BoogieIcfgContainer [2018-12-03 19:38:09,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 19:38:09,573 INFO L168 Benchmark]: Toolchain (without parser) took 1451.36 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-12-03 19:38:09,574 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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. [2018-12-03 19:38:09,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.03 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. [2018-12-03 19:38:09,575 INFO L168 Benchmark]: Boogie Preprocessor took 26.71 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. [2018-12-03 19:38:09,576 INFO L168 Benchmark]: RCFGBuilder took 253.39 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. [2018-12-03 19:38:09,577 INFO L168 Benchmark]: TraceAbstraction took 1127.46 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-12-03 19:38:09,581 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 0.19 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 39.03 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 26.71 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 253.39 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 1127.46 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((0 <= 2 * tmp && 2 <= 2 * res) && 2 <= 2 * a) && 0 <= 2 * b - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 5 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.75 AbsIntWeakeningRatio, 0.5 AbsIntAvgWeakeningVarsNumRemoved, 6.5 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 21 HoareAnnotationTreeSize, 1 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...