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_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/diamond2.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:36:43,052 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:36:43,054 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:36:43,070 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 16:36:43,071 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 16:36:43,072 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 16:36:43,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 16:36:43,075 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 16:36:43,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 16:36:43,078 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 16:36:43,079 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 16:36:43,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 16:36:43,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:36:43,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:36:43,136 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:36:43,136 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:36:43,136 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:36:43,136 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:36:43,137 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:36:43,137 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:36:43,137 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:36:43,137 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:36:43,137 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:36:43,137 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:36:43,138 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:36:43,138 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:36:43,138 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:36:43,139 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:36:43,139 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:36:43,139 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:36:43,139 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:36:43,139 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:36:43,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:36:43,140 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:36:43,140 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:36:43,140 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:36:43,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:36:43,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:36:43,141 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:36:43,141 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:36:43,141 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:36:43,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:36:43,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:36:43,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:36:43,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:36:43,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:36:43,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:36:43,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:36:43,143 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:36:43,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:36:43,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:36:43,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:36:43,143 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:36:43,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:36:43,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:36:43,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:36:43,190 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:36:43,190 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:36:43,191 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/diamond2.i_4.bpl [2018-12-03 16:36:43,192 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/diamond2.i_4.bpl' [2018-12-03 16:36:43,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:36:43,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:36:43,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:36:43,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:36:43,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:36:43,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:36:43,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:36:43,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:36:43,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:36:43,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/1) ... [2018-12-03 16:36:43,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:36:43,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:36:43,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:36:43,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:36:43,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (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 16:36:43,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:36:43,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:36:43,680 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:36:43,680 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 16:36:43,681 INFO L202 PluginConnector]: Adding new model diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:36:43 BoogieIcfgContainer [2018-12-03 16:36:43,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:36:43,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:36:43,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:36:43,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:36:43,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:36:43" (1/2) ... [2018-12-03 16:36:43,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15563177 and model type diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:36:43, skipping insertion in model container [2018-12-03 16:36:43,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:36:43" (2/2) ... [2018-12-03 16:36:43,689 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond2.i_4.bpl [2018-12-03 16:36:43,699 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:36:43,707 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 16:36:43,726 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 16:36:43,766 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:36:43,766 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:36:43,766 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:36:43,766 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:36:43,767 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:36:43,767 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:36:43,767 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:36:43,767 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:36:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 16:36:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 16:36:43,789 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:43,790 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 16:36:43,793 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:43,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 16:36:43,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:43,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:43,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:36:43,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:43,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:44,177 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-12-03 16:36:44,180 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 16:36:44,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:36:44,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 16:36:44,183 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:36:44,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 16:36:44,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 16:36:44,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:36:44,212 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 16:36:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:36:44,256 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 16:36:44,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:36:44,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 16:36:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:36:44,269 INFO L225 Difference]: With dead ends: 9 [2018-12-03 16:36:44,270 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 16:36:44,273 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 16:36:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 16:36:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 16:36:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 16:36:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 16:36:44,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 16:36:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:36:44,304 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 16:36:44,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 16:36:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 16:36:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 16:36:44,305 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:44,305 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 16:36:44,306 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:44,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:44,306 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-12-03 16:36:44,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:44,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:44,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:36:44,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:44,308 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:44,489 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 16:36:44,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:44,490 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:36:44,491 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 16:36:44,493 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 16:36:44,534 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:36:44,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:36:45,244 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 16:36:45,246 INFO L272 AbstractInterpreter]: Visited 4 different actions 11 times. Merged at 3 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 16:36:45,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:45,292 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 16:36:45,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:45,292 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 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 [2018-12-03 16:36:45,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:36:45,310 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:36:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:45,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:36:45,515 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 16:36:45,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:36:45,604 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 16:36:45,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:36:45,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2018-12-03 16:36:45,625 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:36:45,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 16:36:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 16:36:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-12-03 16:36:45,626 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-12-03 16:36:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:36:45,667 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 16:36:45,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 16:36:45,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-12-03 16:36:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:36:45,668 INFO L225 Difference]: With dead ends: 8 [2018-12-03 16:36:45,668 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 16:36:45,669 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-12-03 16:36:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 16:36:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 16:36:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 16:36:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 16:36:45,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-12-03 16:36:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:36:45,673 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 16:36:45,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 16:36:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 16:36:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 16:36:45,674 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:45,674 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-12-03 16:36:45,674 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:45,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:45,675 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-12-03 16:36:45,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:45,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:45,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:36:45,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:45,676 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:45,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:45,944 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:36:45,944 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 16:36:45,945 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 16:36:45,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:45,945 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 16:36:45,963 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-03 16:36:45,963 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-03 16:36:45,981 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-03 16:36:45,981 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 16:36:45,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:36:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:46,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:36:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:46,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:36:46,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2018-12-03 16:36:46,348 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:36:46,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 16:36:46,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 16:36:46,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-12-03 16:36:46,350 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-12-03 16:36:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:36:46,392 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-12-03 16:36:46,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 16:36:46,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-12-03 16:36:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:36:46,393 INFO L225 Difference]: With dead ends: 9 [2018-12-03 16:36:46,394 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 16:36:46,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-12-03 16:36:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 16:36:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 16:36:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 16:36:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 16:36:46,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-12-03 16:36:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:36:46,398 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 16:36:46,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 16:36:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 16:36:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 16:36:46,399 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:46,399 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-12-03 16:36:46,399 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:46,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:46,400 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-12-03 16:36:46,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:46,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:46,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 16:36:46,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:46,401 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:46,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:46,644 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:36:46,644 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 16:36:46,644 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 16:36:46,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:46,644 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 16:36:46,660 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-03 16:36:46,661 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-03 16:36:46,697 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-03 16:36:46,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 16:36:46,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:36:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:46,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:36:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:46,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:36:46,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-12-03 16:36:46,947 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:36:46,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 16:36:46,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 16:36:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-12-03 16:36:46,948 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-12-03 16:36:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:36:46,992 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-12-03 16:36:46,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 16:36:46,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-12-03 16:36:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:36:46,993 INFO L225 Difference]: With dead ends: 10 [2018-12-03 16:36:46,993 INFO L226 Difference]: Without dead ends: 8 [2018-12-03 16:36:46,994 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-12-03 16:36:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-12-03 16:36:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-03 16:36:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-03 16:36:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-12-03 16:36:46,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-12-03 16:36:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:36:46,997 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-12-03 16:36:46,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 16:36:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-12-03 16:36:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-03 16:36:46,998 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:46,998 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-12-03 16:36:46,998 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:46,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:46,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-12-03 16:36:46,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:46,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:46,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 16:36:47,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:47,000 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:47,539 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-12-03 16:36:47,541 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 16:36:47,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:47,541 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:36:47,541 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 16:36:47,541 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 16:36:47,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:47,542 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 16:36:47,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:36:47,556 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:36:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:47,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:36:47,654 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 16:36:47,654 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:36:47,825 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 16:36:47,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:36:47,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2018-12-03 16:36:47,845 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:36:47,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 16:36:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 16:36:47,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-12-03 16:36:47,846 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-12-03 16:36:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:36:47,917 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-12-03 16:36:47,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 16:36:47,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-12-03 16:36:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:36:47,919 INFO L225 Difference]: With dead ends: 11 [2018-12-03 16:36:47,919 INFO L226 Difference]: Without dead ends: 9 [2018-12-03 16:36:47,920 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-12-03 16:36:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-12-03 16:36:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-12-03 16:36:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-03 16:36:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-12-03 16:36:47,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-12-03 16:36:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:36:47,923 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-12-03 16:36:47,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 16:36:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-12-03 16:36:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-03 16:36:47,923 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:47,923 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-12-03 16:36:47,924 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:47,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-12-03 16:36:47,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:47,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:47,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:36:47,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:47,925 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:48,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:48,069 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:36:48,069 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 16:36:48,070 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 16:36:48,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:36:48,070 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 16:36:48,081 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-03 16:36:48,081 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-03 16:36:48,094 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-03 16:36:48,095 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 16:36:48,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:36:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:48,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:36:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:36:48,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:36:48,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2018-12-03 16:36:48,254 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:36:48,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-03 16:36:48,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-03 16:36:48,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-12-03 16:36:48,255 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-12-03 16:36:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:36:48,317 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-12-03 16:36:48,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 16:36:48,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-12-03 16:36:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:36:48,318 INFO L225 Difference]: With dead ends: 12 [2018-12-03 16:36:48,318 INFO L226 Difference]: Without dead ends: 10 [2018-12-03 16:36:48,319 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-12-03 16:36:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-03 16:36:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-03 16:36:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-03 16:36:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-12-03 16:36:48,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-12-03 16:36:48,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:36:48,323 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-12-03 16:36:48,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-03 16:36:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-12-03 16:36:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 16:36:48,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:36:48,324 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-12-03 16:36:48,324 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:36:48,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:36:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-12-03 16:36:48,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:36:48,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:48,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-03 16:36:48,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:36:48,326 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:36:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:36:50,563 WARN L180 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2018-12-03 16:36:56,814 WARN L180 SmtUtils]: Spent 6.23 s on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2018-12-03 16:37:00,899 WARN L180 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2018-12-03 16:37:05,078 WARN L180 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2018-12-03 16:37:07,154 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2018-12-03 16:37:25,495 WARN L180 SmtUtils]: Spent 14.25 s on a formula simplification. DAG size of input: 121 DAG size of output: 27 [2018-12-03 16:37:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:37:25,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:37:25,497 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:37:25,497 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 16:37:25,497 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 16:37:25,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:37:25,498 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 16:37:25,509 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-03 16:37:25,509 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-03 16:37:25,520 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-03 16:37:25,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 16:37:25,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:37:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:37:25,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:37:25,820 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 6 [2018-12-03 16:37:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-03 16:37:25,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:37:25,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 4] total 12 [2018-12-03 16:37:25,959 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:37:25,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-03 16:37:25,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-03 16:37:25,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=119, Unknown=2, NotChecked=0, Total=156 [2018-12-03 16:37:25,960 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-12-03 16:37:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:37:26,111 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-12-03 16:37:26,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-03 16:37:26,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-12-03 16:37:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:37:26,112 INFO L225 Difference]: With dead ends: 11 [2018-12-03 16:37:26,112 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 16:37:26,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=35, Invalid=119, Unknown=2, NotChecked=0, Total=156 [2018-12-03 16:37:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 16:37:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 16:37:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 16:37:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 16:37:26,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-12-03 16:37:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:37:26,115 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 16:37:26,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-03 16:37:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 16:37:26,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 16:37:26,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 16:37:26,400 WARN L180 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2018-12-03 16:37:26,405 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 57) no Hoare annotation was computed. [2018-12-03 16:37:26,405 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 57) no Hoare annotation was computed. [2018-12-03 16:37:26,405 INFO L444 ceAbstractionStarter]: At program point L29(lines 29 55) the Hoare annotation is: false [2018-12-03 16:37:26,405 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 57) no Hoare annotation was computed. [2018-12-03 16:37:26,406 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 56) no Hoare annotation was computed. [2018-12-03 16:37:26,406 INFO L444 ceAbstractionStarter]: At program point L54(lines 16 54) the Hoare annotation is: (let ((.cse4 (div ULTIMATE.start_main_~y~5 2))) (let ((.cse2 (* 4294967296 (div (+ ULTIMATE.start_main_~y~5 (* (- 2) .cse4)) 4294967296))) (.cse3 (* 2 .cse4))) (let ((.cse1 (+ .cse2 .cse3 ULTIMATE.start_main_~x~5)) (.cse0 (<= ULTIMATE.start_main_~y~5 (+ .cse2 .cse3)))) (or (and (<= 19 ULTIMATE.start_main_~x~5) .cse0 (<= ULTIMATE.start_main_~x~5 19)) (and (<= 95 ULTIMATE.start_main_~x~5) (<= ULTIMATE.start_main_~x~5 95) .cse0) (and (<= 38 ULTIMATE.start_main_~x~5) (<= .cse1 (+ ULTIMATE.start_main_~y~5 38)) .cse0) (and (<= .cse1 (+ ULTIMATE.start_main_~y~5 114)) (<= 114 ULTIMATE.start_main_~x~5) .cse0) (and .cse0 (<= 76 ULTIMATE.start_main_~x~5) (<= ULTIMATE.start_main_~x~5 76)) (and (<= ULTIMATE.start_main_~x~5 0) (< 0 (+ (div ULTIMATE.start_main_~x~5 4294967296) 1))) (and (<= .cse1 (+ ULTIMATE.start_main_~y~5 57)) .cse0 (<= 57 ULTIMATE.start_main_~x~5)))))) [2018-12-03 16:37:26,418 INFO L202 PluginConnector]: Adding new model diamond2.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:37:26 BoogieIcfgContainer [2018-12-03 16:37:26,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 16:37:26,419 INFO L168 Benchmark]: Toolchain (without parser) took 43179.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 720.4 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -463.1 MB). Peak memory consumption was 257.3 MB. Max. memory is 7.1 GB. [2018-12-03 16:37:26,420 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 16:37:26,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.63 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 16:37:26,421 INFO L168 Benchmark]: Boogie Preprocessor took 44.67 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 16:37:26,422 INFO L168 Benchmark]: RCFGBuilder took 349.62 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 16:37:26,423 INFO L168 Benchmark]: TraceAbstraction took 42736.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -484.2 MB). Peak memory consumption was 236.1 MB. Max. memory is 7.1 GB. [2018-12-03 16:37:26,427 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 44.63 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 44.67 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 349.62 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 42736.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -484.2 MB). Peak memory consumption was 236.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((((((19 <= main_~x~5 && main_~y~5 <= 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2)) && main_~x~5 <= 19) || ((95 <= main_~x~5 && main_~x~5 <= 95) && main_~y~5 <= 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2))) || ((38 <= main_~x~5 && 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2) + main_~x~5 <= main_~y~5 + 38) && main_~y~5 <= 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2))) || ((4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2) + main_~x~5 <= main_~y~5 + 114 && 114 <= main_~x~5) && main_~y~5 <= 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2))) || ((main_~y~5 <= 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2) && 76 <= main_~x~5) && main_~x~5 <= 76)) || (main_~x~5 <= 0 && 0 < main_~x~5 / 4294967296 + 1)) || ((4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2) + main_~x~5 <= main_~y~5 + 57 && main_~y~5 <= 4294967296 * ((main_~y~5 + -2 * (main_~y~5 / 2)) / 4294967296) + 2 * (main_~y~5 / 2)) && 57 <= main_~x~5) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 42.6s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 169 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 39.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 226 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 75 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 101 ConstructedInterpolants, 1 QuantifiedInterpolants, 7723 SizeOfPredicates, 10 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 6/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...