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 -i ../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:21:20,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:21:20,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:21:20,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:21:20,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:21:20,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:21:20,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:21:20,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:21:20,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:21:20,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:21:20,044 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:21:20,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:21:20,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:21:20,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:21:20,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:21:20,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:21:20,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:21:20,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:21:20,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:21:20,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:21:20,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:21:20,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:21:20,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:21:20,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:21:20,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-04 21:21:20,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-04 21:21:20,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-04 21:21:20,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-04 21:21:20,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-04 21:21:20,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-04 21:21:20,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:21:20,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:21:20,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:21:20,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:21:20,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:21:20,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:21:20,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:21:20,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:21:20,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:21:20,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:21:20,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:21:20,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:21:20,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:21:20,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:21:20,120 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:21:20,121 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:21:20,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl [2019-08-04 21:21:20,122 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl' [2019-08-04 21:21:20,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:21:20,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:21:20,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:21:20,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:21:20,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:21:20,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,204 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-04 21:21:20,204 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-04 21:21:20,205 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-04 21:21:20,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:21:20,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:21:20,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:21:20,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:21:20,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/1) ... [2019-08-04 21:21:20,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:21:20,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:21:20,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:21:20,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:21:20,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-04 21:21:20,321 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-04 21:21:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-04 21:21:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-04 21:21:20,928 INFO L275 CfgBuilder]: Using library mode [2019-08-04 21:21:20,929 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-04 21:21:20,930 INFO L202 PluginConnector]: Adding new model GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:21:20 BoogieIcfgContainer [2019-08-04 21:21:20,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:21:20,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-04 21:21:20,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-04 21:21:20,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-04 21:21:20,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:21:20" (1/2) ... [2019-08-04 21:21:20,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b16491 and model type GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:21:20, skipping insertion in model container [2019-08-04 21:21:20,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:21:20" (2/2) ... [2019-08-04 21:21:20,943 INFO L109 eAbstractionObserver]: Analyzing ICFG GripperTest-incorrect.bpl [2019-08-04 21:21:20,955 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-04 21:21:20,963 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-04 21:21:20,981 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-04 21:21:21,012 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-04 21:21:21,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-04 21:21:21,013 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-04 21:21:21,014 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-04 21:21:21,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-04 21:21:21,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-04 21:21:21,014 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-04 21:21:21,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-04 21:21:21,015 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-04 21:21:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-04 21:21:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-04 21:21:21,036 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:21:21,037 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-04 21:21:21,039 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-04 21:21:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:21:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-08-04 21:21:21,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:21:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:21:21,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-04 21:21:21,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:21:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:21:21,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-04 21:21:21,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-04 21:21:21,201 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-04 21:21:21,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-04 21:21:21,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-04 21:21:21,216 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-04 21:21:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:21:21,270 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-04 21:21:21,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-04 21:21:21,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-04 21:21:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:21:21,282 INFO L225 Difference]: With dead ends: 8 [2019-08-04 21:21:21,283 INFO L226 Difference]: Without dead ends: 6 [2019-08-04 21:21:21,285 INFO L628 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 [2019-08-04 21:21:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-04 21:21:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2019-08-04 21:21:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-04 21:21:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-04 21:21:21,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 2 [2019-08-04 21:21:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:21:21,314 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-04 21:21:21,314 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-04 21:21:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-04 21:21:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-04 21:21:21,314 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:21:21,315 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-04 21:21:21,315 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-04 21:21:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:21:21,315 INFO L82 PathProgramCache]: Analyzing trace with hash 928359, now seen corresponding path program 1 times [2019-08-04 21:21:21,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:21:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:21:21,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-04 21:21:21,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:21:21,386 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-04 21:21:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:21:21,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:21:21,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-08-04 21:21:21,448 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:21:21,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:21:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:21:21,449 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-04 21:21:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:21:21,497 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-04 21:21:21,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:21:21,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-04 21:21:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:21:21,499 INFO L225 Difference]: With dead ends: 8 [2019-08-04 21:21:21,500 INFO L226 Difference]: Without dead ends: 8 [2019-08-04 21:21:21,501 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:21:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-04 21:21:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-04 21:21:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-04 21:21:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-04 21:21:21,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-04 21:21:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:21:21,504 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-04 21:21:21,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:21:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-04 21:21:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-04 21:21:21,505 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:21:21,505 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2019-08-04 21:21:21,505 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-04 21:21:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:21:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 892155915, now seen corresponding path program 2 times [2019-08-04 21:21:21,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:21:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-04 21:21:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-04 21:21:21,593 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-04 21:21:21,634 INFO L202 PluginConnector]: Adding new model GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:21:21 BoogieIcfgContainer [2019-08-04 21:21:21,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-04 21:21:21,638 INFO L168 Benchmark]: Toolchain (without parser) took 1474.57 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 110.0 MB in the beginning and 148.8 MB in the end (delta: -38.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2019-08-04 21:21:21,640 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 111.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-04 21:21:21,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.44 ms. Allocated memory is still 140.5 MB. Free memory was 109.8 MB in the beginning and 108.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-04 21:21:21,643 INFO L168 Benchmark]: Boogie Preprocessor took 30.90 ms. Allocated memory is still 140.5 MB. Free memory was 108.1 MB in the beginning and 106.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-04 21:21:21,644 INFO L168 Benchmark]: RCFGBuilder took 690.74 ms. Allocated memory is still 140.5 MB. Free memory was 106.8 MB in the beginning and 91.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-08-04 21:21:21,645 INFO L168 Benchmark]: TraceAbstraction took 703.35 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 90.9 MB in the beginning and 148.8 MB in the end (delta: -57.8 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2019-08-04 21:21:21,652 INFO L335 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 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 111.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.44 ms. Allocated memory is still 140.5 MB. Free memory was 109.8 MB in the beginning and 108.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.90 ms. Allocated memory is still 140.5 MB. Free memory was 108.1 MB in the beginning and 106.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 690.74 ms. Allocated memory is still 140.5 MB. Free memory was 106.8 MB in the beginning and 91.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 703.35 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 90.9 MB in the beginning and 148.8 MB in the end (delta: -57.8 MB). Peak memory consumption was 40.5 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; [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, 5 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 5 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...