java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:07:55,497 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:07:55,500 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:07:55,512 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-04 09:07:55,545 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-04 09:07:55,565 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:07:55,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:07:55,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:07:55,568 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:07:55,569 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:07:55,570 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:07:55,570 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:07:55,570 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:07:55,570 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:07:55,570 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:07:55,571 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:07:55,572 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:07:55,572 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:07:55,572 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:07:55,572 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:07:55,572 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:07:55,574 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:07:55,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:07:55,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:07:55,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:07:55,575 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:07:55,575 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:07:55,575 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:07:55,576 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:07:55,576 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:07:55,576 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:07:55,576 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:07:55,576 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:07:55,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:07:55,577 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:07:55,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:07:55,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:07:55,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:07:55,673 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:07:55,674 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:07:55,675 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl [2018-10-04 09:07:55,675 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl' [2018-10-04 09:07:55,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:07:55,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:07:55,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:07:55,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:07:55,730 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:07:55,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,770 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 09:07:55,770 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 09:07:55,770 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 09:07:55,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:07:55,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:07:55,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:07:55,774 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:07:55,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/1) ... [2018-10-04 09:07:55,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:07:55,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:07:55,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:07:55,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:07:55,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (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 [2018-10-04 09:07:55,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 09:07:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 09:07:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 09:07:56,254 INFO L338 CfgBuilder]: Using library mode [2018-10-04 09:07:56,255 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:07:56 BoogieIcfgContainer [2018-10-04 09:07:56,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:07:56,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:07:56,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:07:56,261 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:07:56,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:07:55" (1/2) ... [2018-10-04 09:07:56,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17bbe8 and model type DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:07:56, skipping insertion in model container [2018-10-04 09:07:56,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:07:56" (2/2) ... [2018-10-04 09:07:56,265 INFO L112 eAbstractionObserver]: Analyzing ICFG DraegerElevator-FSEN2007.bpl [2018-10-04 09:07:56,277 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:07:56,292 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:07:56,338 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:07:56,339 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:07:56,339 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:07:56,339 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:07:56,339 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:07:56,340 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:07:56,340 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:07:56,340 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:07:56,340 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:07:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-10-04 09:07:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-10-04 09:07:56,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:07:56,367 INFO L375 BasicCegarLoop]: trace histogram [1, 1] [2018-10-04 09:07:56,368 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-10-04 09:07:56,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:07:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-04 09:07:56,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:07:56,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:07:56,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:56,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:07:56,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:07:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:07:56,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:07:56,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-04 09:07:56,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:07:56,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:07:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:07:56,543 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2018-10-04 09:07:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:07:56,697 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2018-10-04 09:07:56,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:07:56,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-10-04 09:07:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:07:56,714 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:07:56,714 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:07:56,718 INFO L605 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 [2018-10-04 09:07:56,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:07:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:07:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:07:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 33 transitions. [2018-10-04 09:07:56,759 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 33 transitions. Word has length 2 [2018-10-04 09:07:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:07:56,760 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 33 transitions. [2018-10-04 09:07:56,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:07:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 33 transitions. [2018-10-04 09:07:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 09:07:56,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:07:56,761 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:07:56,762 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-10-04 09:07:56,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:07:56,763 INFO L82 PathProgramCache]: Analyzing trace with hash 2056286332, now seen corresponding path program 1 times [2018-10-04 09:07:56,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:07:56,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:07:56,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:56,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:07:56,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:07:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:07:56,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:07:56,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-04 09:07:56,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:07:56,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:07:56,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:07:56,794 INFO L87 Difference]: Start difference. First operand 19 states and 33 transitions. Second operand 3 states. [2018-10-04 09:07:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:07:56,860 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2018-10-04 09:07:56,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:07:56,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-04 09:07:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:07:56,862 INFO L225 Difference]: With dead ends: 43 [2018-10-04 09:07:56,862 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 09:07:56,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:07:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 09:07:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 09:07:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 09:07:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2018-10-04 09:07:56,869 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 9 [2018-10-04 09:07:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:07:56,870 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2018-10-04 09:07:56,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:07:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2018-10-04 09:07:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 09:07:56,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:07:56,871 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:07:56,871 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-10-04 09:07:56,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:07:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2113544634, now seen corresponding path program 1 times [2018-10-04 09:07:56,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:07:56,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:07:56,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:56,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:07:56,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:07:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:07:56,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:07:56,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:07:56,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:07:56,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:07:56,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:07:56,902 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 3 states. [2018-10-04 09:07:57,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:07:57,043 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2018-10-04 09:07:57,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:07:57,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-04 09:07:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:07:57,046 INFO L225 Difference]: With dead ends: 56 [2018-10-04 09:07:57,046 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 09:07:57,046 INFO L605 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 [2018-10-04 09:07:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 09:07:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-10-04 09:07:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:07:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2018-10-04 09:07:57,053 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 9 [2018-10-04 09:07:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:07:57,053 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-10-04 09:07:57,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:07:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2018-10-04 09:07:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:07:57,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:07:57,054 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 09:07:57,055 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]=== [2018-10-04 09:07:57,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:07:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1212618068, now seen corresponding path program 1 times [2018-10-04 09:07:57,055 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:07:57,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:07:57,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:57,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:07:57,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:07:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:07:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:07:57,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:07:57,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-10-04 09:07:57,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:07:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:07:57,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:07:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:07:57,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:07:57,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:07:57,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:07:57,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:07:57,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-04 09:07:57,359 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand 6 states. [2018-10-04 09:07:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:07:57,707 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2018-10-04 09:07:57,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:07:57,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 09:07:57,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:07:57,708 INFO L225 Difference]: With dead ends: 59 [2018-10-04 09:07:57,708 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 09:07:57,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-04 09:07:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 09:07:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 09:07:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 09:07:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 09:07:57,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-10-04 09:07:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:07:57,711 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 09:07:57,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:07:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 09:07:57,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 09:07:57,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 09:07:58,171 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-04 09:07:58,174 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 1 60) no Hoare annotation was computed. [2018-10-04 09:07:58,174 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2018-10-04 09:07:58,174 INFO L425 ceAbstractionStarter]: For program point L52(lines 52 57) no Hoare annotation was computed. [2018-10-04 09:07:58,175 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 45) no Hoare annotation was computed. [2018-10-04 09:07:58,175 INFO L421 ceAbstractionStarter]: At program point L48(lines 9 59) the Hoare annotation is: (let ((.cse0 (<= main_input main_max)) (.cse1 (<= main_current main_max))) (or (and .cse0 .cse1 (<= main_req main_max)) (and .cse0 .cse1 (= main_pc 0)))) [2018-10-04 09:07:58,175 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 44) no Hoare annotation was computed. [2018-10-04 09:07:58,175 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 31) no Hoare annotation was computed. [2018-10-04 09:07:58,176 INFO L425 ceAbstractionStarter]: For program point L49(lines 49 57) no Hoare annotation was computed. [2018-10-04 09:07:58,176 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINVARIANTandASSERT(line 10) no Hoare annotation was computed. [2018-10-04 09:07:58,176 INFO L425 ceAbstractionStarter]: For program point L13(lines 13 16) no Hoare annotation was computed. [2018-10-04 09:07:58,176 INFO L425 ceAbstractionStarter]: For program point L13-2(lines 13 32) no Hoare annotation was computed. [2018-10-04 09:07:58,177 INFO L425 ceAbstractionStarter]: For program point L9-1(lines 1 60) no Hoare annotation was computed. [2018-10-04 09:07:58,177 INFO L425 ceAbstractionStarter]: For program point mainENTRY(lines 1 60) no Hoare annotation was computed. [2018-10-04 09:07:58,177 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 31) no Hoare annotation was computed. [2018-10-04 09:07:58,177 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 44) no Hoare annotation was computed. [2018-10-04 09:07:58,177 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 58) no Hoare annotation was computed. [2018-10-04 09:07:58,188 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:07:58 BoogieIcfgContainer [2018-10-04 09:07:58,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:07:58,189 INFO L168 Benchmark]: Toolchain (without parser) took 2461.80 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-10-04 09:07:58,191 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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. [2018-10-04 09:07:58,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.30 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. [2018-10-04 09:07:58,192 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 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. [2018-10-04 09:07:58,193 INFO L168 Benchmark]: RCFGBuilder took 456.48 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. [2018-10-04 09:07:58,194 INFO L168 Benchmark]: TraceAbstraction took 1932.28 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2018-10-04 09:07:58,198 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 0.25 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 43.30 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 25.12 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 456.48 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 1932.28 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: loop invariant is valid and assertion always holds For all program executions holds that loop invariant is valid and assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((input <= max && current <= max) && req <= max) || ((input <= max && current <= max) && pc == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 126 SDslu, 33 SDs, 0 SdLazy, 93 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 11 NumberOfFragments, 21 HoareAnnotationTreeSize, 1 FomulaSimplifications, 121 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 755 SizeOfPredicates, 2 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DraegerElevator-FSEN2007.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-07-58-211.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DraegerElevator-FSEN2007.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-07-58-211.csv Received shutdown request...