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_PUPT.epf -i ../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl
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This is Ultimate 0.1.23-9f4048f
[2018-10-04 12:41:52,002 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-10-04 12:41:52,004 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-10-04 12:41:52,035 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
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[2018-10-04 12:41:52,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2018-10-04 12:41:52,051 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf
[2018-10-04 12:41:52,066 INFO L110 SettingsManager]: Loading preferences was successful
[2018-10-04 12:41:52,066 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-04 12:41:52,067 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-04 12:41:52,067 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-10-04 12:41:52,068 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-04 12:41:52,068 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-10-04 12:41:52,068 INFO L133 SettingsManager]: * Use SBE=true
[2018-10-04 12:41:52,069 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-04 12:41:52,069 INFO L133 SettingsManager]: * sizeof long=4
[2018-10-04 12:41:52,069 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-10-04 12:41:52,069 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-10-04 12:41:52,069 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-10-04 12:41:52,070 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-10-04 12:41:52,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-04 12:41:52,070 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-10-04 12:41:52,070 INFO L133 SettingsManager]: * sizeof long double=12
[2018-10-04 12:41:52,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-10-04 12:41:52,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-10-04 12:41:52,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-04 12:41:52,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-10-04 12:41:52,071 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-10-04 12:41:52,071 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-10-04 12:41:52,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-04 12:41:52,072 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-04 12:41:52,072 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-10-04 12:41:52,072 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-04 12:41:52,072 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-10-04 12:41:52,073 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-04 12:41:52,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-04 12:41:52,073 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-04 12:41:52,073 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true
[2018-10-04 12:41:52,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-04 12:41:52,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-04 12:41:52,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-04 12:41:52,173 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2018-10-04 12:41:52,174 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized
[2018-10-04 12:41:52,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl
[2018-10-04 12:41:52,175 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/DraegerElevator-FSEN2007.bpl'
[2018-10-04 12:41:52,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-04 12:41:52,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-10-04 12:41:52,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-04 12:41:52,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-04 12:41:52,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-04 12:41:52,255 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,269 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,274 WARN L165 Inliner]: Program contained no entry procedure!
[2018-10-04 12:41:52,275 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start]
[2018-10-04 12:41:52,275 WARN L175 Inliner]: Fallback enabled. All procedures will be processed.
[2018-10-04 12:41:52,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-04 12:41:52,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-04 12:41:52,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-04 12:41:52,278 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-10-04 12:41:52,290 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,290 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,291 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,292 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,297 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,304 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,305 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 12:41:52" (1/1) ...
[2018-10-04 12:41:52,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-04 12:41:52,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-04 12:41:52,308 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-10-04 12:41:52,308 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-10-04 12:41:52,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:52" (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 12:41:52,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration
[2018-10-04 12:41:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2018-10-04 12:41:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2018-10-04 12:41:52,779 INFO L338 CfgBuilder]: Using library mode
[2018-10-04 12:41:52,780 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:41:52 BoogieIcfgContainer
[2018-10-04 12:41:52,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-04 12:41:52,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-04 12:41:52,782 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-10-04 12:41:52,786 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-10-04 12:41:52,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:41:52" (1/2) ...
[2018-10-04 12:41:52,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52334acf and model type DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:41:52, skipping insertion in model container
[2018-10-04 12:41:52,789 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 12:41:52" (2/2) ...
[2018-10-04 12:41:52,791 INFO L112 eAbstractionObserver]: Analyzing ICFG DraegerElevator-FSEN2007.bpl
[2018-10-04 12:41:52,810 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-04 12:41:52,821 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-04 12:41:52,901 INFO L133 ementStrategyFactory]: Using default assertion order modulation
[2018-10-04 12:41:52,902 INFO L381 AbstractCegarLoop]: Interprodecural is true
[2018-10-04 12:41:52,902 INFO L382 AbstractCegarLoop]: Hoare is true
[2018-10-04 12:41:52,902 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-04 12:41:52,902 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-04 12:41:52,903 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-04 12:41:52,903 INFO L386 AbstractCegarLoop]: Difference is false
[2018-10-04 12:41:52,903 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-04 12:41:52,903 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-04 12:41:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states.
[2018-10-04 12:41:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3
[2018-10-04 12:41:52,946 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-04 12:41:52,947 INFO L375 BasicCegarLoop]: trace histogram [1, 1]
[2018-10-04 12:41:52,948 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]===
[2018-10-04 12:41:52,954 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-04 12:41:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times
[2018-10-04 12:41:52,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-04 12:41:52,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-04 12:41:53,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-04 12:41:53,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-04 12:41:53,102 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 12:41:53,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-04 12:41:53,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2018-10-04 12:41:53,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-04 12:41:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-04 12:41:53,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-04 12:41:53,126 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states.
[2018-10-04 12:41:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-04 12:41:53,272 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions.
[2018-10-04 12:41:53,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-10-04 12:41:53,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2
[2018-10-04 12:41:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-04 12:41:53,288 INFO L225 Difference]: With dead ends: 21
[2018-10-04 12:41:53,288 INFO L226 Difference]: Without dead ends: 19
[2018-10-04 12:41:53,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1
[2018-10-04 12:41:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2018-10-04 12:41:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2018-10-04 12:41:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2018-10-04 12:41:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 33 transitions.
[2018-10-04 12:41:53,332 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 33 transitions. Word has length 2
[2018-10-04 12:41:53,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-04 12:41:53,332 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 33 transitions.
[2018-10-04 12:41:53,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-04 12:41:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 33 transitions.
[2018-10-04 12:41:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-04 12:41:53,333 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-04 12:41:53,333 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-04 12:41:53,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]===
[2018-10-04 12:41:53,334 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-04 12:41:53,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2056286332, now seen corresponding path program 1 times
[2018-10-04 12:41:53,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-04 12:41:53,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-04 12:41:53,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-04 12:41:53,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-04 12:41:53,382 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 12:41:53,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-04 12:41:53,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-04 12:41:53,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-04 12:41:53,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-04 12:41:53,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-04 12:41:53,388 INFO L87 Difference]: Start difference. First operand 19 states and 33 transitions. Second operand 3 states.
[2018-10-04 12:41:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-04 12:41:53,458 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions.
[2018-10-04 12:41:53,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-10-04 12:41:53,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9
[2018-10-04 12:41:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-04 12:41:53,459 INFO L225 Difference]: With dead ends: 43
[2018-10-04 12:41:53,460 INFO L226 Difference]: Without dead ends: 25
[2018-10-04 12:41:53,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1
[2018-10-04 12:41:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-10-04 12:41:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2018-10-04 12:41:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2018-10-04 12:41:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions.
[2018-10-04 12:41:53,471 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 9
[2018-10-04 12:41:53,471 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-04 12:41:53,472 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions.
[2018-10-04 12:41:53,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-04 12:41:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions.
[2018-10-04 12:41:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-04 12:41:53,473 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-04 12:41:53,474 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-04 12:41:53,474 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]===
[2018-10-04 12:41:53,475 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-04 12:41:53,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2113544634, now seen corresponding path program 1 times
[2018-10-04 12:41:53,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-04 12:41:53,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-04 12:41:53,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-04 12:41:53,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-04 12:41:53,509 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 12:41:53,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-04 12:41:53,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-04 12:41:53,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-04 12:41:53,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-04 12:41:53,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-04 12:41:53,512 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 3 states.
[2018-10-04 12:41:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-04 12:41:53,638 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions.
[2018-10-04 12:41:53,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-10-04 12:41:53,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9
[2018-10-04 12:41:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-04 12:41:53,640 INFO L225 Difference]: With dead ends: 56
[2018-10-04 12:41:53,640 INFO L226 Difference]: Without dead ends: 32
[2018-10-04 12:41:53,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1
[2018-10-04 12:41:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2018-10-04 12:41:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31.
[2018-10-04 12:41:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2018-10-04 12:41:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions.
[2018-10-04 12:41:53,647 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 9
[2018-10-04 12:41:53,648 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-04 12:41:53,648 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions.
[2018-10-04 12:41:53,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-04 12:41:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions.
[2018-10-04 12:41:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2018-10-04 12:41:53,649 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-04 12:41:53,649 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-04 12:41:53,649 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINVARIANTandASSERT]===
[2018-10-04 12:41:53,650 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-04 12:41:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1212618068, now seen corresponding path program 1 times
[2018-10-04 12:41:53,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-04 12:41:53,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-04 12:41:53,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-04 12:41:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-04 12:41:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-04 12:41:53,931 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 12:41:53,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-04 12:41:53,932 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 12:41:53,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-04 12:41:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-04 12:41:53,983 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-10-04 12:41:54,307 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 12:41:54,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-04 12:41:54,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2018-10-04 12:41:54,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-04 12:41:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-04 12:41:54,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-04 12:41:54,330 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand 6 states.
[2018-10-04 12:41:54,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-04 12:41:54,678 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions.
[2018-10-04 12:41:54,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-10-04 12:41:54,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2018-10-04 12:41:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-04 12:41:54,679 INFO L225 Difference]: With dead ends: 59
[2018-10-04 12:41:54,679 INFO L226 Difference]: Without dead ends: 0
[2018-10-04 12:41:54,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 6
[2018-10-04 12:41:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2018-10-04 12:41:54,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2018-10-04 12:41:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2018-10-04 12:41:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2018-10-04 12:41:54,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10
[2018-10-04 12:41:54,681 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-04 12:41:54,682 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2018-10-04 12:41:54,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-04 12:41:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2018-10-04 12:41:54,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2018-10-04 12:41:54,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2018-10-04 12:41:54,827 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13
[2018-10-04 12:41:54,831 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 1 60) no Hoare annotation was computed.
[2018-10-04 12:41:54,831 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed.
[2018-10-04 12:41:54,831 INFO L425 ceAbstractionStarter]: For program point L52(lines 52 57) no Hoare annotation was computed.
[2018-10-04 12:41:54,831 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 45) no Hoare annotation was computed.
[2018-10-04 12:41:54,831 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 12:41:54,832 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 44) no Hoare annotation was computed.
[2018-10-04 12:41:54,832 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 31) no Hoare annotation was computed.
[2018-10-04 12:41:54,832 INFO L425 ceAbstractionStarter]: For program point L49(lines 49 57) no Hoare annotation was computed.
[2018-10-04 12:41:54,832 INFO L425 ceAbstractionStarter]: For program point L13(lines 13 16) no Hoare annotation was computed.
[2018-10-04 12:41:54,832 INFO L425 ceAbstractionStarter]: For program point L13-2(lines 13 32) no Hoare annotation was computed.
[2018-10-04 12:41:54,833 INFO L425 ceAbstractionStarter]: For program point L9-1(lines 1 60) no Hoare annotation was computed.
[2018-10-04 12:41:54,833 INFO L425 ceAbstractionStarter]: For program point mainENTRY(lines 1 60) no Hoare annotation was computed.
[2018-10-04 12:41:54,833 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 31) no Hoare annotation was computed.
[2018-10-04 12:41:54,833 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINVARIANTandASSERT(line 10) no Hoare annotation was computed.
[2018-10-04 12:41:54,833 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 44) no Hoare annotation was computed.
[2018-10-04 12:41:54,833 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 58) no Hoare annotation was computed.
[2018-10-04 12:41:54,844 INFO L202 PluginConnector]: Adding new model DraegerElevator-FSEN2007.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:41:54 BoogieIcfgContainer
[2018-10-04 12:41:54,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-04 12:41:54,845 INFO L168 Benchmark]: Toolchain (without parser) took 2614.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB.
[2018-10-04 12:41:54,848 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-04 12:41:54,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-04 12:41:54,850 INFO L168 Benchmark]: Boogie Preprocessor took 29.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-04 12:41:54,852 INFO L168 Benchmark]: RCFGBuilder took 473.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
[2018-10-04 12:41:54,854 INFO L168 Benchmark]: TraceAbstraction took 2062.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB.
[2018-10-04 12:41:54,860 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 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
* Boogie Procedure Inliner took 45.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
* Boogie Preprocessor took 29.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
* RCFGBuilder took 473.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2062.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 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, 1.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s 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, 0.6s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s 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_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-41-54-882.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DraegerElevator-FSEN2007.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-41-54-882.csv
Received shutdown request...