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/linear_search.i_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 16:40:34,148 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 16:40:34,150 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 16:40:34,162 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 16:40:34,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 16:40:34,163 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 16:40:34,165 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 16:40:34,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 16:40:34,168 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 16:40:34,169 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 16:40:34,170 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 16:40:34,195 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 16:40:34,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 16:40:34,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 16:40:34,210 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 16:40:34,210 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 16:40:34,210 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 16:40:34,211 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 16:40:34,211 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 16:40:34,211 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 16:40:34,211 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 16:40:34,212 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 16:40:34,212 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 16:40:34,212 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 16:40:34,212 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 16:40:34,212 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 16:40:34,212 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 16:40:34,213 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 16:40:34,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 16:40:34,214 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 16:40:34,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 16:40:34,214 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 16:40:34,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 16:40:34,214 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 16:40:34,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 16:40:34,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 16:40:34,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 16:40:34,215 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 16:40:34,215 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 16:40:34,215 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 16:40:34,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 16:40:34,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 16:40:34,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 16:40:34,216 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 16:40:34,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 16:40:34,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 16:40:34,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 16:40:34,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 16:40:34,217 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 16:40:34,217 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 16:40:34,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 16:40:34,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 16:40:34,218 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 16:40:34,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 16:40:34,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 16:40:34,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 16:40:34,267 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 16:40:34,268 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 16:40:34,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/linear_search.i_5.bpl [2018-12-03 16:40:34,269 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/linear_search.i_5.bpl' [2018-12-03 16:40:34,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 16:40:34,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 16:40:34,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 16:40:34,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 16:40:34,322 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 16:40:34,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 16:40:34,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 16:40:34,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 16:40:34,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 16:40:34,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/1) ... [2018-12-03 16:40:34,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 16:40:34,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 16:40:34,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 16:40:34,389 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 16:40:34,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (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 16:40:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 16:40:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 16:40:34,835 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 16:40:34,835 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 16:40:34,836 INFO L202 PluginConnector]: Adding new model linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:40:34 BoogieIcfgContainer [2018-12-03 16:40:34,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 16:40:34,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 16:40:34,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 16:40:34,842 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 16:40:34,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 04:40:34" (1/2) ... [2018-12-03 16:40:34,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d13fe4a and model type linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:40:34, skipping insertion in model container [2018-12-03 16:40:34,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:40:34" (2/2) ... [2018-12-03 16:40:34,847 INFO L112 eAbstractionObserver]: Analyzing ICFG linear_search.i_5.bpl [2018-12-03 16:40:34,859 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 16:40:34,867 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 16:40:34,888 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 16:40:34,931 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 16:40:34,931 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 16:40:34,932 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 16:40:34,932 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 16:40:34,932 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 16:40:34,932 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 16:40:34,932 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 16:40:34,933 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 16:40:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 16:40:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 16:40:34,964 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:40:34,965 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 16:40:34,967 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:40:34,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:40:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-12-03 16:40:34,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:40:35,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:40:35,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:40:35,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:40:35,034 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:40:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:40:35,623 WARN L180 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 16 [2018-12-03 16:40:35,721 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 16:40:35,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 16:40:35,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 16:40:35,724 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 16:40:35,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 16:40:35,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 16:40:35,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 16:40:35,744 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-12-03 16:40:35,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:40:35,848 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-12-03 16:40:35,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 16:40:35,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 16:40:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:40:35,862 INFO L225 Difference]: With dead ends: 11 [2018-12-03 16:40:35,863 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 16:40:35,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 16:40:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 16:40:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 16:40:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 16:40:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 16:40:35,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-12-03 16:40:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:40:35,907 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 16:40:35,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 16:40:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 16:40:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 16:40:35,911 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 16:40:35,911 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-12-03 16:40:35,912 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 16:40:35,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:40:35,912 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-12-03 16:40:35,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 16:40:35,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:40:35,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:40:35,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 16:40:35,918 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 16:40:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:40:36,399 WARN L180 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-12-03 16:40:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-03 16:40:36,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:40:36,449 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 16:40:36,450 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 16:40:36,452 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10] [2018-12-03 16:40:36,499 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 16:40:36,499 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 16:41:10,101 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 16:41:10,103 INFO L272 AbstractInterpreter]: Visited 5 different actions 13 times. Merged at 4 different actions 8 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 16:41:10,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 16:41:10,142 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 16:41:10,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 16:41:10,143 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 16:41:10,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 16:41:10,155 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 16:41:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 16:41:10,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 16:41:10,515 WARN L180 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-12-03 16:41:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:10,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 16:41:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 16:41:10,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 16:41:10,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2018-12-03 16:41:10,691 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 16:41:10,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 16:41:10,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 16:41:10,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-03 16:41:10,693 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-12-03 16:41:11,206 WARN L180 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-12-03 16:41:11,489 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-12-03 16:41:11,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 16:41:11,569 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 16:41:11,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 16:41:11,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-12-03 16:41:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 16:41:11,571 INFO L225 Difference]: With dead ends: 9 [2018-12-03 16:41:11,571 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 16:41:11,572 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-12-03 16:41:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 16:41:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 16:41:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 16:41:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 16:41:11,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 16:41:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 16:41:11,574 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 16:41:11,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 16:41:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 16:41:11,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 16:41:11,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 16:41:12,020 WARN L180 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2018-12-03 16:41:12,088 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 11 103) no Hoare annotation was computed. [2018-12-03 16:41:12,089 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 11 103) no Hoare annotation was computed. [2018-12-03 16:41:12,089 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 11 103) no Hoare annotation was computed. [2018-12-03 16:41:12,089 INFO L444 ceAbstractionStarter]: At program point L91(lines 91 101) the Hoare annotation is: false [2018-12-03 16:41:12,089 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 102) no Hoare annotation was computed. [2018-12-03 16:41:12,090 INFO L444 ceAbstractionStarter]: At program point L75(lines 75 92) the Hoare annotation is: (let ((.cse2 (div ~SIZE 4294967296))) (let ((.cse0 (* 4294967296 .cse2))) (and (let ((.cse1 (div ULTIMATE.start_linear_search_~n 4294967296))) (or (and (= ~SIZE (+ .cse0 ULTIMATE.start_linear_search_~n)) (< 0 (+ .cse1 .cse2 1))) (and (<= .cse2 0) (= ~SIZE (+ .cse0 ULTIMATE.start_linear_search_~n 4294967296)) (< 0 (+ .cse1 .cse2 2))))) (<= (+ ULTIMATE.start_linear_search_~j~5 .cse0 1) (+ (* 4294967296 (div ULTIMATE.start_linear_search_~j~5 4294967296)) ~SIZE))))) [2018-12-03 16:41:12,090 INFO L444 ceAbstractionStarter]: At program point L100(lines 65 100) the Hoare annotation is: (let ((.cse2 (div ~SIZE 4294967296))) (let ((.cse0 (* 4294967296 .cse2)) (.cse1 (div ULTIMATE.start_linear_search_~n 4294967296))) (or (and (= ~SIZE (+ .cse0 ULTIMATE.start_linear_search_~n)) (< 0 (+ .cse1 .cse2 1))) (and (<= .cse2 0) (= ~SIZE (+ .cse0 ULTIMATE.start_linear_search_~n 4294967296)) (< 0 (+ .cse1 .cse2 2)))))) [2018-12-03 16:41:12,100 INFO L202 PluginConnector]: Adding new model linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:41:12 BoogieIcfgContainer [2018-12-03 16:41:12,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 16:41:12,101 INFO L168 Benchmark]: Toolchain (without parser) took 37781.64 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -917.3 MB). Peak memory consumption was 145.4 MB. Max. memory is 7.1 GB. [2018-12-03 16:41:12,102 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 16:41:12,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.79 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 16:41:12,103 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 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 16:41:12,104 INFO L168 Benchmark]: RCFGBuilder took 447.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 16:41:12,105 INFO L168 Benchmark]: TraceAbstraction took 37262.61 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -938.5 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. [2018-12-03 16:41:12,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.79 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 26.28 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 447.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37262.61 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -938.5 MB). Peak memory consumption was 124.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 102]: 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: 75]: Loop Invariant Derived loop invariant: ((~SIZE == 4294967296 * (~SIZE / 4294967296) + linear_search_~n && 0 < linear_search_~n / 4294967296 + ~SIZE / 4294967296 + 1) || ((~SIZE / 4294967296 <= 0 && ~SIZE == 4294967296 * (~SIZE / 4294967296) + linear_search_~n + 4294967296) && 0 < linear_search_~n / 4294967296 + ~SIZE / 4294967296 + 2)) && linear_search_~j~5 + 4294967296 * (~SIZE / 4294967296) + 1 <= 4294967296 * (linear_search_~j~5 / 4294967296) + ~SIZE - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: (~SIZE == 4294967296 * (~SIZE / 4294967296) + linear_search_~n && 0 < linear_search_~n / 4294967296 + ~SIZE / 4294967296 + 1) || ((~SIZE / 4294967296 <= 0 && ~SIZE == 4294967296 * (~SIZE / 4294967296) + linear_search_~n + 4294967296) && 0 < linear_search_~n / 4294967296 + ~SIZE / 4294967296 + 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 37.1s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 112 HoareAnnotationTreeSize, 3 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 344 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1893 SizeOfPredicates, 2 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 1/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...