java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 17:27:14,296 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 17:27:14,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 17:27:14,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-03 17:27:14,391 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 17:27:14,414 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 17:27:14,414 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 17:27:14,415 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 17:27:14,415 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 17:27:14,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 17:27:14,416 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 17:27:14,416 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 17:27:14,416 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 17:27:14,416 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 17:27:14,419 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 17:27:14,420 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 17:27:14,420 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 17:27:14,420 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 17:27:14,421 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 17:27:14,421 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 17:27:14,421 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 17:27:14,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 17:27:14,423 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 17:27:14,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 17:27:14,424 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 17:27:14,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 17:27:14,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 17:27:14,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 17:27:14,425 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 17:27:14,425 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 17:27:14,425 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 17:27:14,426 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 17:27:14,426 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 17:27:14,426 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 17:27:14,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 17:27:14,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 17:27:14,427 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 17:27:14,427 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 17:27:14,427 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 17:27:14,427 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 17:27:14,427 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 17:27:14,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 17:27:14,429 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 17:27:14,429 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 17:27:14,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 17:27:14,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 17:27:14,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 17:27:14,499 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 17:27:14,500 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 17:27:14,501 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-12-03 17:27:14,501 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-12-03 17:27:14,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 17:27:14,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 17:27:14,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 17:27:14,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 17:27:14,564 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 17:27:14,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 17:27:14,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 17:27:14,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 17:27:14,609 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 17:27:14,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/1) ... [2018-12-03 17:27:14,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 17:27:14,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 17:27:14,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 17:27:14,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 17:27:14,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (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 17:27:14,709 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-12-03 17:27:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 17:27:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 17:27:14,940 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 17:27:14,940 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 17:27:14,941 INFO L202 PluginConnector]: Adding new model hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:27:14 BoogieIcfgContainer [2018-12-03 17:27:14,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 17:27:14,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 17:27:14,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 17:27:14,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 17:27:14,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:27:14" (1/2) ... [2018-12-03 17:27:14,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ea59a3 and model type hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:27:14, skipping insertion in model container [2018-12-03 17:27:14,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:27:14" (2/2) ... [2018-12-03 17:27:14,950 INFO L112 eAbstractionObserver]: Analyzing ICFG hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-12-03 17:27:14,961 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 17:27:14,969 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 17:27:14,988 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 17:27:15,030 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 17:27:15,031 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 17:27:15,031 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 17:27:15,031 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 17:27:15,031 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 17:27:15,032 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 17:27:15,032 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 17:27:15,032 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 17:27:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-03 17:27:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 17:27:15,055 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:27:15,056 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 17:27:15,058 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:27:15,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:15,065 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-12-03 17:27:15,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:27:15,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:15,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:15,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:15,122 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:27:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:27:15,489 WARN L180 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-12-03 17:27:15,491 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 17:27:15,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:27:15,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 17:27:15,494 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:27:15,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 17:27:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 17:27:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 17:27:15,514 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-03 17:27:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:27:15,557 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-03 17:27:15,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:27:15,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-03 17:27:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:27:15,572 INFO L225 Difference]: With dead ends: 9 [2018-12-03 17:27:15,572 INFO L226 Difference]: Without dead ends: 5 [2018-12-03 17:27:15,575 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 17:27:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-03 17:27:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-03 17:27:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-03 17:27:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-03 17:27:15,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-03 17:27:15,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:27:15,607 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-03 17:27:15,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 17:27:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-03 17:27:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-03 17:27:15,608 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:27:15,608 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-03 17:27:15,609 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:27:15,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:15,609 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-12-03 17:27:15,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:27:15,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:15,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:15,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:15,611 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:27:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:27:15,841 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-12-03 17:27:15,842 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 17:27:15,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:27:15,843 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 17:27:15,844 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-03 17:27:15,846 INFO L205 CegarAbsIntRunner]: [0], [5], [7], [9] [2018-12-03 17:27:15,901 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 17:27:15,902 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 17:27:16,266 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 17:27:16,268 INFO L272 AbstractInterpreter]: Visited 4 different actions 25 times. Merged at 3 different actions 21 times. Widened at 2 different actions 8 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 17:27:16,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:16,280 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 17:27:16,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:27:16,280 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 17:27:16,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:16,300 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 17:27:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:27:16,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 17:27:16,586 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-12-03 17:27:16,601 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 17:27:16,601 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 17:27:16,804 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 17:27:16,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 17:27:16,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2018-12-03 17:27:16,838 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 17:27:16,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 17:27:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 17:27:16,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-03 17:27:16,841 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-12-03 17:27:17,050 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-12-03 17:27:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:27:17,116 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-12-03 17:27:17,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 17:27:17,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-12-03 17:27:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:27:17,121 INFO L225 Difference]: With dead ends: 8 [2018-12-03 17:27:17,121 INFO L226 Difference]: Without dead ends: 6 [2018-12-03 17:27:17,122 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-12-03 17:27:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-12-03 17:27:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-12-03 17:27:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-03 17:27:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-12-03 17:27:17,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-12-03 17:27:17,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:27:17,126 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-12-03 17:27:17,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 17:27:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-12-03 17:27:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 17:27:17,127 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:27:17,127 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-12-03 17:27:17,128 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:27:17,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:27:17,128 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-12-03 17:27:17,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:27:17,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:17,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:27:17,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:27:17,130 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:27:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:27:17,398 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-12-03 17:27:17,399 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 17:27:17,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:27:17,400 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 17:27:17,400 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-03 17:27:17,400 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-03 17:27:17,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:27:17,401 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 17:27:17,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-03 17:27:17,413 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-03 17:27:17,428 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-03 17:27:17,428 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-03 17:27:17,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 17:27:17,649 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 17:27:17,649 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 17:27:17,755 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 17:27:17,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-03 17:27:17,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2018-12-03 17:27:17,776 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 17:27:17,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 17:27:17,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 17:27:17,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-12-03 17:27:17,777 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 7 states. [2018-12-03 17:27:18,306 WARN L180 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-12-03 17:27:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:27:18,313 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2018-12-03 17:27:18,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 17:27:18,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2018-12-03 17:27:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:27:18,314 INFO L225 Difference]: With dead ends: 7 [2018-12-03 17:27:18,314 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 17:27:18,315 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2018-12-03 17:27:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 17:27:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 17:27:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 17:27:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 17:27:18,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-12-03 17:27:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:27:18,316 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 17:27:18,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 17:27:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 17:27:18,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 17:27:18,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 17:27:18,400 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 49) no Hoare annotation was computed. [2018-12-03 17:27:18,401 INFO L444 ceAbstractionStarter]: At program point L46(lines 29 46) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~res~5 ULTIMATE.start_main_~cnt~5)) (.cse0 (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~a~5))) (and (<= .cse0 .cse1) (< ULTIMATE.start_main_~res~5 (+ ULTIMATE.start_main_~b~5 ULTIMATE.start_main_~a~5 1)) (<= .cse1 .cse0))) [2018-12-03 17:27:18,401 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 49) no Hoare annotation was computed. [2018-12-03 17:27:18,401 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 49) no Hoare annotation was computed. [2018-12-03 17:27:18,401 INFO L444 ceAbstractionStarter]: At program point L41(lines 41 47) the Hoare annotation is: false [2018-12-03 17:27:18,402 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 48) no Hoare annotation was computed. [2018-12-03 17:27:18,483 INFO L202 PluginConnector]: Adding new model hhk2008.c.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:27:18 BoogieIcfgContainer [2018-12-03 17:27:18,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 17:27:18,485 INFO L168 Benchmark]: Toolchain (without parser) took 3923.13 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 680.5 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -704.6 MB). Peak memory consumption was 166.8 MB. Max. memory is 7.1 GB. [2018-12-03 17:27:18,486 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 17:27:18,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.13 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 17:27:18,487 INFO L168 Benchmark]: Boogie Preprocessor took 25.10 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 17:27:18,488 INFO L168 Benchmark]: RCFGBuilder took 307.52 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 17:27:18,489 INFO L168 Benchmark]: TraceAbstraction took 3541.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 680.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -725.8 MB). Peak memory consumption was 145.7 MB. Max. memory is 7.1 GB. [2018-12-03 17:27:18,498 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 44.13 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 25.10 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 307.52 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 3541.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 680.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -725.8 MB). Peak memory consumption was 145.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 29]: Loop Invariant Derived loop invariant: (main_~b~5 + main_~a~5 <= main_~res~5 + main_~cnt~5 && main_~res~5 < main_~b~5 + main_~a~5 + 1) && main_~res~5 + main_~cnt~5 <= main_~b~5 + main_~a~5 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 8 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...