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 [2019-08-05 10:13:33,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:13:33,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:13:33,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:13:33,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:13:33,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:13:33,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:13:33,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:13:33,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:13:33,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:13:33,628 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:13:33,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:13:33,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:13:33,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:13:33,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:13:33,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:13:33,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:13:33,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:13:33,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:13:33,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:13:33,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:13:33,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:13:33,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:13:33,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:13:33,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:13:33,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:13:33,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:13:33,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:13:33,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:13:33,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:13:33,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:13:33,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:13:33,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:13:33,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:13:33,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:13:33,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:13:33,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:13:33,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:13:33,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:13:33,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:13:33,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:13:33,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:13:33,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:13:33,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:13:33,701 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:13:33,701 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:13:33,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl [2019-08-05 10:13:33,702 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GripperTest-incorrect.bpl' [2019-08-05 10:13:33,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:13:33,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:13:33,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:13:33,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:13:33,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:13:33,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,778 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:13:33,779 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:13:33,779 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:13:33,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:13:33,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:13:33,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:13:33,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:13:33,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/1) ... [2019-08-05 10:13:33,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:13:33,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:13:33,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:13:33,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:13:33,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (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: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 [2019-08-05 10:13:33,882 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:13:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:13:33,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:13:34,365 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:13:34,365 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:13:34,366 INFO L202 PluginConnector]: Adding new model GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:13:34 BoogieIcfgContainer [2019-08-05 10:13:34,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:13:34,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:13:34,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:13:34,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:13:34,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:33" (1/2) ... [2019-08-05 10:13:34,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d7ba1d and model type GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:13:34, skipping insertion in model container [2019-08-05 10:13:34,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:13:34" (2/2) ... [2019-08-05 10:13:34,375 INFO L109 eAbstractionObserver]: Analyzing ICFG GripperTest-incorrect.bpl [2019-08-05 10:13:34,383 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:13:34,391 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:13:34,405 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:13:34,428 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:13:34,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:13:34,430 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:13:34,430 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:13:34,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:13:34,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:13:34,430 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:13:34,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:13:34,431 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:13:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 10:13:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:13:34,453 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:34,454 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:13:34,457 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-05 10:13:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-08-05 10:13:34,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:34,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:13:34,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:13:34,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:13:34,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:13:34,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:13:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:13:34,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:13:34,608 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 10:13:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:34,674 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:13:34,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:13:34,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:13:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:34,687 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:13:34,687 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 10:13:34,692 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 [2019-08-05 10:13:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 10:13:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2019-08-05 10:13:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:13:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:13:34,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 2 [2019-08-05 10:13:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:34,724 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:13:34,725 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:13:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:13:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:13:34,725 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:34,725 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:13:34,725 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-05 10:13:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:34,726 INFO L82 PathProgramCache]: Analyzing trace with hash 928359, now seen corresponding path program 1 times [2019-08-05 10:13:34,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:34,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 10:13:34,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:34,805 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 10:13:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:13:34,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:13:34,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-08-05 10:13:34,844 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:13:34,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:13:34,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:13:34,845 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 10:13:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:34,911 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:13:34,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:13:34,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:13:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:34,913 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:13:34,913 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:13:34,915 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 [2019-08-05 10:13:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:13:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:13:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:13:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:13:34,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:13:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:34,919 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:13:34,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:13:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:13:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:13:34,920 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:34,920 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1] [2019-08-05 10:13:34,921 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2019-08-05 10:13:34,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:34,921 INFO L82 PathProgramCache]: Analyzing trace with hash 892155915, now seen corresponding path program 2 times [2019-08-05 10:13:34,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 10:13:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 10:13:35,066 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 10:13:35,087 INFO L202 PluginConnector]: Adding new model GripperTest-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:13:35 BoogieIcfgContainer [2019-08-05 10:13:35,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:13:35,090 INFO L168 Benchmark]: Toolchain (without parser) took 1346.07 ms. Allocated memory was 142.1 MB in the beginning and 175.6 MB in the end (delta: 33.6 MB). Free memory was 109.3 MB in the beginning and 143.9 MB in the end (delta: -34.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:13:35,091 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:13:35,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.34 ms. Allocated memory is still 142.1 MB. Free memory was 109.3 MB in the beginning and 107.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:35,094 INFO L168 Benchmark]: Boogie Preprocessor took 29.05 ms. Allocated memory is still 142.1 MB. Free memory was 107.3 MB in the beginning and 106.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:35,095 INFO L168 Benchmark]: RCFGBuilder took 555.06 ms. Allocated memory is still 142.1 MB. Free memory was 106.2 MB in the beginning and 90.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:35,096 INFO L168 Benchmark]: TraceAbstraction took 718.92 ms. Allocated memory was 142.1 MB in the beginning and 175.6 MB in the end (delta: 33.6 MB). Free memory was 90.3 MB in the beginning and 143.9 MB in the end (delta: -53.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:13:35,100 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 142.1 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.34 ms. Allocated memory is still 142.1 MB. Free memory was 109.3 MB in the beginning and 107.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.05 ms. Allocated memory is still 142.1 MB. Free memory was 107.3 MB in the beginning and 106.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.06 ms. Allocated memory is still 142.1 MB. Free memory was 106.2 MB in the beginning and 90.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 718.92 ms. Allocated memory was 142.1 MB in the beginning and 175.6 MB in the end (delta: 33.6 MB). Free memory was 90.3 MB in the beginning and 143.9 MB in the end (delta: -53.6 MB). There was no memory consumed. 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, 0.1s 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, 0.1s 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...