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/real-life/GripperTest-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 15:07:33,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 15:07:33,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 15:07:33,199 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 15:07:33,200 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 15:07:33,201 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 15:07:33,202 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 15:07:33,204 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 15:07:33,206 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 15:07:33,207 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 15:07:33,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-03 15:07:33,234 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 15:07:33,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 15:07:33,251 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 15:07:33,252 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 15:07:33,252 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 15:07:33,253 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 15:07:33,253 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 15:07:33,253 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 15:07:33,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 15:07:33,253 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 15:07:33,254 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 15:07:33,254 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 15:07:33,254 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 15:07:33,254 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 15:07:33,254 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 15:07:33,254 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 15:07:33,255 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 15:07:33,255 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 15:07:33,256 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 15:07:33,256 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 15:07:33,256 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 15:07:33,256 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 15:07:33,257 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 15:07:33,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 15:07:33,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 15:07:33,257 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 15:07:33,257 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 15:07:33,258 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 15:07:33,258 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 15:07:33,258 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 15:07:33,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 15:07:33,258 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 15:07:33,259 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 15:07:33,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 15:07:33,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 15:07:33,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 15:07:33,259 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 15:07:33,260 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 15:07:33,260 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 15:07:33,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 15:07:33,260 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 15:07:33,260 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 15:07:33,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 15:07:33,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 15:07:33,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 15:07:33,317 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 15:07:33,317 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 15:07:33,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl [2018-12-03 15:07:33,319 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl' [2018-12-03 15:07:33,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 15:07:33,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 15:07:33,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 15:07:33,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 15:07:33,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 15:07:33,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,391 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 15:07:33,391 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 15:07:33,392 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 15:07:33,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 15:07:33,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 15:07:33,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 15:07:33,395 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 15:07:33,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/1) ... [2018-12-03 15:07:33,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 15:07:33,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 15:07:33,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 15:07:33,422 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 15:07:33,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (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 15:07:33,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-12-03 15:07:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 15:07:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 15:07:33,860 INFO L272 CfgBuilder]: Using library mode [2018-12-03 15:07:33,861 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 15:07:33,862 INFO L202 PluginConnector]: Adding new model GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:33 BoogieIcfgContainer [2018-12-03 15:07:33,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 15:07:33,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 15:07:33,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 15:07:33,867 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 15:07:33,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 03:07:33" (1/2) ... [2018-12-03 15:07:33,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fef57 and model type GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 03:07:33, skipping insertion in model container [2018-12-03 15:07:33,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:07:33" (2/2) ... [2018-12-03 15:07:33,871 INFO L112 eAbstractionObserver]: Analyzing ICFG GripperTest-incorrect.bpl [2018-12-03 15:07:33,882 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 15:07:33,893 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 15:07:33,912 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 15:07:33,946 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 15:07:33,947 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 15:07:33,947 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 15:07:33,947 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 15:07:33,947 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 15:07:33,947 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 15:07:33,948 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 15:07:33,948 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 15:07:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-12-03 15:07:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-03 15:07:33,970 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:07:33,971 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-03 15:07:33,974 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-12-03 15:07:33,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:07:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-12-03 15:07:33,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:07:34,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:07:34,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:07:34,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:07:34,029 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:07:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:07:34,139 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 15:07:34,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:07:34,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 15:07:34,142 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:07:34,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:07:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:07:34,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:07:34,162 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-12-03 15:07:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:07:34,283 INFO L93 Difference]: Finished difference Result 13 states and 33 transitions. [2018-12-03 15:07:34,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:07:34,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-03 15:07:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:07:34,313 INFO L225 Difference]: With dead ends: 13 [2018-12-03 15:07:34,315 INFO L226 Difference]: Without dead ends: 10 [2018-12-03 15:07:34,318 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:07:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-12-03 15:07:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-12-03 15:07:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-03 15:07:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 30 transitions. [2018-12-03 15:07:34,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 30 transitions. Word has length 2 [2018-12-03 15:07:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:07:34,365 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 30 transitions. [2018-12-03 15:07:34,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:07:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 30 transitions. [2018-12-03 15:07:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-03 15:07:34,366 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:07:34,366 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-12-03 15:07:34,366 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-12-03 15:07:34,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:07:34,367 INFO L82 PathProgramCache]: Analyzing trace with hash 28748410, now seen corresponding path program 1 times [2018-12-03 15:07:34,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:07:34,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:07:34,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:07:34,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:07:34,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:07:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 15:07:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 15:07:34,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 15:07:34,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 15:07:34,418 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 15:07:34,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 15:07:34,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 15:07:34,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:07:34,421 INFO L87 Difference]: Start difference. First operand 10 states and 30 transitions. Second operand 3 states. [2018-12-03 15:07:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 15:07:34,503 INFO L93 Difference]: Finished difference Result 27 states and 86 transitions. [2018-12-03 15:07:34,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 15:07:34,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-12-03 15:07:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 15:07:34,505 INFO L225 Difference]: With dead ends: 27 [2018-12-03 15:07:34,505 INFO L226 Difference]: Without dead ends: 18 [2018-12-03 15:07:34,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 15:07:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-03 15:07:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-03 15:07:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-03 15:07:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 51 transitions. [2018-12-03 15:07:34,513 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 51 transitions. Word has length 5 [2018-12-03 15:07:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 15:07:34,514 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 51 transitions. [2018-12-03 15:07:34,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 15:07:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 51 transitions. [2018-12-03 15:07:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-03 15:07:34,515 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 15:07:34,515 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-12-03 15:07:34,516 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-12-03 15:07:34,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 15:07:34,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1838052257, now seen corresponding path program 1 times [2018-12-03 15:07:34,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 15:07:34,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:07:34,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 15:07:34,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 15:07:34,518 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 15:07:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 15:07:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 15:07:34,554 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 15:07:34,574 INFO L202 PluginConnector]: Adding new model GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 03:07:34 BoogieIcfgContainer [2018-12-03 15:07:34,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 15:07:34,575 INFO L168 Benchmark]: Toolchain (without parser) took 1221.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 15:07:34,577 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:07:34,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:07:34,579 INFO L168 Benchmark]: Boogie Preprocessor took 26.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-03 15:07:34,580 INFO L168 Benchmark]: RCFGBuilder took 440.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 15:07:34,581 INFO L168 Benchmark]: TraceAbstraction took 710.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 15:07:34,585 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 440.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 710.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: loop invariant can be violated and assertion can be violated loop invariant can be violated and assertion can be violated We found a FailurePath: [L13] is_room_x := true; [L14] is_left_gripper := true; [L15] room_x := 4; [L16] room_y := 0; [L17] gripper_left := 0; [L18] gripper_right := 0; VAL [gripper_left=0, gripper_right=0, is_left_gripper=true, is_room_x=true, room_x=4, room_y=0] [L22] invariant room_y != -1; VAL [gripper_left=0, gripper_right=0, is_left_gripper=true, is_room_x=true, room_x=4, room_y=0] [L25] COND TRUE is_room_x == true [L26] is_room_x := false; VAL [gripper_left=0, gripper_right=0, is_left_gripper=true, is_room_x=false, room_x=4, room_y=0] [L22] invariant room_y != -1; VAL [gripper_left=0, gripper_right=0, is_left_gripper=true, is_room_x=false, room_x=4, room_y=0] [L39] COND FALSE !(true == is_room_x) [L42] room_y := room_y - 1; VAL [gripper_left=0, gripper_right=0, is_left_gripper=true, is_room_x=false, room_x=4, room_y=-1] [L45] COND TRUE true == is_left_gripper [L46] gripper_left := gripper_left + 1; VAL [gripper_left=1, gripper_right=0, is_left_gripper=true, is_room_x=false, room_x=4, room_y=-1] [L22] invariant room_y != -1; VAL [gripper_left=1, gripper_right=0, is_left_gripper=true, is_room_x=false, room_x=4, room_y=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 23 SDslu, 21 SDs, 0 SdLazy, 13 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...