java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/linear_search.i_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:37:35,423 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:37:35,426 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:37:35,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-03 15:37:35,504 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2018-12-03 15:37:35,517 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:37:35,517 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:37:35,518 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:37:35,518 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:37:35,518 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:37:35,518 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:37:35,519 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:37:35,519 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:37:35,519 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:37:35,519 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:37:35,519 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:37:35,520 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:37:35,520 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:37:35,520 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:37:35,520 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:37:35,521 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:37:35,521 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:37:35,521 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:37:35,521 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:37:35,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:37:35,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:37:35,522 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:37:35,522 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:37:35,522 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:37:35,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:37:35,523 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:37:35,523 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:37:35,523 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:37:35,523 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:37:35,523 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:37:35,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:37:35,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:37:35,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:37:35,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:37:35,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:37:35,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:37:35,525 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:37:35,525 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:37:35,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:37:35,525 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:37:35,525 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:37:35,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:37:35,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:37:35,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:37:35,606 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:37:35,607 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:37:35,608 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/linear_search.i_5.bpl [2018-12-03 15:37:35,608 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/linear_search.i_5.bpl' [2018-12-03 15:37:35,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:37:35,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:37:35,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:37:35,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:37:35,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:37:35,704 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,719 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:37:35,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:37:35,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:37:35,730 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:37:35,741 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,741 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,743 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,743 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,752 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,761 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,762 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 03:37:35" (1/1) ... [2018-12-03 15:37:35,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:37:35,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:37:35,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:37:35,769 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:37:35,770 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 03:37:35" (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 15:37:35,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 15:37:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 15:37:36,115 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 15:37:36,116 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 15:37:36,116 INFO L202 PluginConnector]: Adding new model linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:37:36 BoogieIcfgContainer [2018-12-03 15:37:36,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:37:36,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:37:36,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:37:36,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:37:36,121 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 03:37:35" (1/2) ... [2018-12-03 15:37:36,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f4d563 and model type linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:37:36, skipping insertion in model container [2018-12-03 15:37:36,123 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 03:37:36" (2/2) ... [2018-12-03 15:37:36,125 INFO L112 eAbstractionObserver]: Analyzing ICFG linear_search.i_5.bpl [2018-12-03 15:37:36,135 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:37:36,144 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 15:37:36,163 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 15:37:36,199 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:37:36,199 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:37:36,199 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:37:36,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:37:36,200 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:37:36,200 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:37:36,200 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:37:36,200 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:37:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 15:37:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 15:37:36,223 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:37:36,224 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 15:37:36,227 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:37:36,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:37:36,233 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-12-03 15:37:36,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:37:36,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:37:36,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:37:36,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:37:36,289 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:37:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:37:36,912 WARN L180 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 16 [2018-12-03 15:37:37,018 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 15:37:37,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:37:37,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 15:37:37,022 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:37:37,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 15:37:37,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 15:37:37,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 15:37:37,045 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-12-03 15:37:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:37:37,146 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-12-03 15:37:37,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:37:37,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-03 15:37:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:37:37,161 INFO L225 Difference]: With dead ends: 11 [2018-12-03 15:37:37,161 INFO L226 Difference]: Without dead ends: 7 [2018-12-03 15:37:37,165 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 15:37:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-12-03 15:37:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-03 15:37:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-03 15:37:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-12-03 15:37:37,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-12-03 15:37:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:37:37,206 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-12-03 15:37:37,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 15:37:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-12-03 15:37:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-03 15:37:37,207 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:37:37,207 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-12-03 15:37:37,208 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 15:37:37,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:37:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-12-03 15:37:37,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:37:37,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:37:37,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:37:37,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:37:37,211 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:37:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:37:37,672 WARN L180 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-12-03 15:37:37,801 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 15:37:37,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:37:37,801 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 15:37:37,802 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2018-12-03 15:37:37,805 INFO L205 CegarAbsIntRunner]: [0], [2], [6], [8], [10] [2018-12-03 15:37:37,849 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 15:37:37,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 15:38:10,297 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 15:38:10,299 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 15:38:10,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:38:10,313 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 15:38:10,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 15:38:10,313 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 15:38:10,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:38:10,328 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 15:38:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:38:10,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 15:38:10,745 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-12-03 15:38:10,844 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 15:38:10,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 15:38:10,931 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 15:38:10,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 15:38:10,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2018-12-03 15:38:10,955 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 15:38:10,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 15:38:10,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 15:38:10,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-03 15:38:10,957 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-12-03 15:38:11,175 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-12-03 15:38:11,468 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-12-03 15:38:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:38:11,575 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 15:38:11,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-03 15:38:11,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-12-03 15:38:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:38:11,577 INFO L225 Difference]: With dead ends: 9 [2018-12-03 15:38:11,577 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 15:38:11,578 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-12-03 15:38:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 15:38:11,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 15:38:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 15:38:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 15:38:11,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-12-03 15:38:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:38:11,580 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 15:38:11,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 15:38:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 15:38:11,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 15:38:11,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 15:38:11,751 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2018-12-03 15:38:11,953 WARN L180 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-12-03 15:38:11,955 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 11 103) no Hoare annotation was computed. [2018-12-03 15:38:11,955 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 11 103) no Hoare annotation was computed. [2018-12-03 15:38:11,955 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 11 103) no Hoare annotation was computed. [2018-12-03 15:38:11,956 INFO L444 ceAbstractionStarter]: At program point L91(lines 91 101) the Hoare annotation is: false [2018-12-03 15:38:11,956 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 102) no Hoare annotation was computed. [2018-12-03 15:38:11,956 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 15:38:11,957 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 15:38:11,966 INFO L202 PluginConnector]: Adding new model linear_search.i_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:38:11 BoogieIcfgContainer [2018-12-03 15:38:11,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:38:11,967 INFO L168 Benchmark]: Toolchain (without parser) took 36284.78 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.7 MB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -349.0 MB). Peak memory consumption was 593.6 MB. Max. memory is 7.1 GB. [2018-12-03 15:38:11,969 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 15:38:11,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 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 15:38:11,970 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 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 15:38:11,970 INFO L168 Benchmark]: RCFGBuilder took 348.15 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 15:38:11,971 INFO L168 Benchmark]: TraceAbstraction took 35849.48 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.7 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -370.2 MB). Peak memory consumption was 572.5 MB. Max. memory is 7.1 GB. [2018-12-03 15:38:11,976 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 44.11 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 38.64 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 348.15 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 35849.48 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.7 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -370.2 MB). Peak memory consumption was 572.5 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, 35.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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, 32.5s 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, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s 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...