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/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:19:32,699 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:19:32,701 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:19:32,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:19:32,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:19:32,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:19:32,715 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:19:32,717 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:19:32,719 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:19:32,720 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:19:32,721 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:19:32,721 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:19:32,722 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:19:32,723 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:19:32,726 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:19:32,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:19:32,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:19:32,738 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:19:32,740 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:19:32,745 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:19:32,746 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:19:32,747 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:19:32,752 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:19:32,767 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:19:32,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:19:32,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:19:32,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:19:32,794 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:19:32,794 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:19:32,794 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:19:32,797 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:19:32,797 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:19:32,797 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:19:32,797 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:19:32,798 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:19:32,798 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:19:32,799 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:19:32,799 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:19:32,799 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:19:32,800 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:19:32,800 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:19:32,801 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:19:32,801 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:19:32,801 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:19:32,801 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:19:32,803 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:19:32,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:19:32,803 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:19:32,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:19:32,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:19:32,804 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:19:32,804 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:19:32,804 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:19:32,804 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:19:32,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:19:32,805 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:19:32,805 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:19:32,805 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:19:32,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:19:32,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:19:32,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:19:32,866 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:19:32,867 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:19:32,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-09-18 11:19:33,219 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24ab6624d/da595881703942d1acfd0e8498ac582e/FLAG8a93881bd [2018-09-18 11:19:33,522 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:19:33,523 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-09-18 11:19:33,540 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24ab6624d/da595881703942d1acfd0e8498ac582e/FLAG8a93881bd [2018-09-18 11:19:33,561 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24ab6624d/da595881703942d1acfd0e8498ac582e [2018-09-18 11:19:33,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:19:33,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:19:33,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:19:33,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:19:33,589 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:19:33,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:19:33" (1/1) ... [2018-09-18 11:19:33,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64024991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:33, skipping insertion in model container [2018-09-18 11:19:33,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:19:33" (1/1) ... [2018-09-18 11:19:33,606 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:19:34,250 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:19:34,269 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:19:34,401 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:19:34,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34 WrapperNode [2018-09-18 11:19:34,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:19:34,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:19:34,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:19:34,499 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:19:34,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:34,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:19:34,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:19:34,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:19:34,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:19:34,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:34,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:34,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:34,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:35,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:35,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:35,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (1/1) ... [2018-09-18 11:19:35,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:19:35,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:19:35,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:19:35,090 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:19:35,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (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 [2018-09-18 11:19:35,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:19:35,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:19:35,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:19:35,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:19:35,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:19:35,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:19:35,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:19:35,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:19:40,131 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:19:40,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:19:40 BoogieIcfgContainer [2018-09-18 11:19:40,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:19:40,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:19:40,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:19:40,137 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:19:40,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:19:33" (1/3) ... [2018-09-18 11:19:40,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a306541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:19:40, skipping insertion in model container [2018-09-18 11:19:40,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:19:34" (2/3) ... [2018-09-18 11:19:40,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a306541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:19:40, skipping insertion in model container [2018-09-18 11:19:40,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:19:40" (3/3) ... [2018-09-18 11:19:40,141 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label05_true-unreach-call.c [2018-09-18 11:19:40,151 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:19:40,160 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:19:40,219 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:19:40,220 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:19:40,220 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:19:40,220 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:19:40,220 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:19:40,221 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:19:40,221 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:19:40,221 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:19:40,221 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:19:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-18 11:19:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-18 11:19:40,269 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:19:40,271 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:19:40,273 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:19:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash 620538673, now seen corresponding path program 1 times [2018-09-18 11:19:40,280 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:19:40,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:40,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:19:40,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:40,328 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:19:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:19:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:19:40,866 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:19:40,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:19:40,867 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:19:40,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:19:40,892 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:19:40,893 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:19:40,897 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-18 11:19:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:19:44,499 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-09-18 11:19:44,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:19:44,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-09-18 11:19:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:19:44,525 INFO L225 Difference]: With dead ends: 985 [2018-09-18 11:19:44,525 INFO L226 Difference]: Without dead ends: 686 [2018-09-18 11:19:44,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:19:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-09-18 11:19:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-09-18 11:19:44,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-09-18 11:19:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-09-18 11:19:44,635 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 71 [2018-09-18 11:19:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:19:44,636 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-09-18 11:19:44,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:19:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-09-18 11:19:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-18 11:19:44,646 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:19:44,647 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:19:44,647 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:19:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2040216429, now seen corresponding path program 1 times [2018-09-18 11:19:44,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:19:44,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:44,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:19:44,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:44,650 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:19:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:19:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:19:45,046 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:19:45,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:19:45,046 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:19:45,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:19:45,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:19:45,049 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:19:45,049 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-09-18 11:19:50,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:19:50,480 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-09-18 11:19:50,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:19:50,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-09-18 11:19:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:19:50,495 INFO L225 Difference]: With dead ends: 2339 [2018-09-18 11:19:50,496 INFO L226 Difference]: Without dead ends: 1659 [2018-09-18 11:19:50,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:19:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-09-18 11:19:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-09-18 11:19:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-09-18 11:19:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-09-18 11:19:50,607 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 152 [2018-09-18 11:19:50,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:19:50,608 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-09-18 11:19:50,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:19:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-09-18 11:19:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-18 11:19:50,621 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:19:50,623 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:19:50,623 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:19:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1556450923, now seen corresponding path program 1 times [2018-09-18 11:19:50,624 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:19:50,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:50,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:19:50,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:50,625 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:19:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:19:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:19:51,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:19:51,209 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-09-18 11:19:51,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:19:51,219 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:19:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:19:51,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:19:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:19:51,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:19:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:19:51,929 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:19:51,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-18 11:19:51,929 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:19:51,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:19:51,934 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:19:51,935 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:19:51,935 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 3 states. [2018-09-18 11:19:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:19:55,925 INFO L93 Difference]: Finished difference Result 4776 states and 7052 transitions. [2018-09-18 11:19:55,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:19:55,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-09-18 11:19:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:19:55,954 INFO L225 Difference]: With dead ends: 4776 [2018-09-18 11:19:55,954 INFO L226 Difference]: Without dead ends: 3140 [2018-09-18 11:19:55,965 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:19:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-09-18 11:19:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3127. [2018-09-18 11:19:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2018-09-18 11:19:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4357 transitions. [2018-09-18 11:19:56,071 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4357 transitions. Word has length 203 [2018-09-18 11:19:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:19:56,072 INFO L480 AbstractCegarLoop]: Abstraction has 3127 states and 4357 transitions. [2018-09-18 11:19:56,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:19:56,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4357 transitions. [2018-09-18 11:19:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-09-18 11:19:56,082 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:19:56,084 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:19:56,084 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:19:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash -937553027, now seen corresponding path program 1 times [2018-09-18 11:19:56,085 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:19:56,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:56,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:19:56,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:19:56,087 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:19:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:19:56,384 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:19:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 128 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:19:56,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:19:56,463 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:19:56,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:19:56,482 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:19:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:19:56,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:19:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-18 11:19:56,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:19:57,218 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:19:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 128 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:19:57,992 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:19:57,993 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:19:57,993 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:19:57,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:19:57,994 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:19:57,994 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:19:57,995 INFO L87 Difference]: Start difference. First operand 3127 states and 4357 transitions. Second operand 5 states. [2018-09-18 11:20:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:20:01,580 INFO L93 Difference]: Finished difference Result 8478 states and 12477 transitions. [2018-09-18 11:20:01,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:20:01,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2018-09-18 11:20:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:20:01,617 INFO L225 Difference]: With dead ends: 8478 [2018-09-18 11:20:01,617 INFO L226 Difference]: Without dead ends: 5547 [2018-09-18 11:20:01,640 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:20:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2018-09-18 11:20:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5471. [2018-09-18 11:20:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5471 states. [2018-09-18 11:20:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 7679 transitions. [2018-09-18 11:20:01,785 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 7679 transitions. Word has length 239 [2018-09-18 11:20:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:20:01,786 INFO L480 AbstractCegarLoop]: Abstraction has 5471 states and 7679 transitions. [2018-09-18 11:20:01,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:20:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 7679 transitions. [2018-09-18 11:20:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-18 11:20:01,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:20:01,803 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:20:01,803 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:20:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1493717004, now seen corresponding path program 1 times [2018-09-18 11:20:01,803 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:20:01,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:20:01,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:20:01,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:20:01,805 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:20:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:20:02,432 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:20:02,636 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-09-18 11:20:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 128 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:20:02,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:20:02,713 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:20:02,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:20:02,722 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:20:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:20:02,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:20:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-18 11:20:02,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:20:03,270 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-18 11:20:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 128 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:20:04,207 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:20:04,208 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-18 11:20:04,208 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:20:04,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:20:04,209 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:20:04,209 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:20:04,211 INFO L87 Difference]: Start difference. First operand 5471 states and 7679 transitions. Second operand 5 states. [2018-09-18 11:20:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:20:07,497 INFO L93 Difference]: Finished difference Result 13565 states and 19168 transitions. [2018-09-18 11:20:07,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:20:07,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2018-09-18 11:20:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:20:07,537 INFO L225 Difference]: With dead ends: 13565 [2018-09-18 11:20:07,538 INFO L226 Difference]: Without dead ends: 8290 [2018-09-18 11:20:07,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 477 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:20:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8290 states. [2018-09-18 11:20:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8290 to 8215. [2018-09-18 11:20:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8215 states. [2018-09-18 11:20:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 11524 transitions. [2018-09-18 11:20:07,757 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 11524 transitions. Word has length 240 [2018-09-18 11:20:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:20:07,758 INFO L480 AbstractCegarLoop]: Abstraction has 8215 states and 11524 transitions. [2018-09-18 11:20:07,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:20:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 11524 transitions. [2018-09-18 11:20:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-18 11:20:07,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:20:07,774 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:20:07,775 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:20:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash 22969815, now seen corresponding path program 1 times [2018-09-18 11:20:07,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:20:07,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:20:07,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:20:07,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:20:07,776 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:20:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:20:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 131 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-18 11:20:08,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:20:08,198 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:20:08,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:20:08,212 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:20:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:20:08,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:20:45,636 WARN L178 SmtUtils]: Spent 36.95 s on a formula simplification. DAG size of input: 152 DAG size of output: 46 [2018-09-18 11:20:56,462 WARN L178 SmtUtils]: Spent 10.22 s on a formula simplification. DAG size of input: 125 DAG size of output: 55 [2018-09-18 11:20:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 129 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:20:56,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:20:56,979 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-09-18 11:20:57,557 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 19 [2018-09-18 11:20:57,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2018-09-18 11:20:58,158 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 41 [2018-09-18 11:20:58,164 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:58,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:58,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:58,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:58,803 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,002 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,246 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,324 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,708 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,834 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,886 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:20:59,972 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:00,023 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:00,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:00,546 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:00,940 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,425 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,519 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,774 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,829 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:01,911 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,075 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,217 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,348 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:02,956 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,250 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,453 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,517 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,568 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,631 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,682 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,790 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,860 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:03,965 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,070 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,184 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,237 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,338 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,390 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,492 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,612 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,664 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,898 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,947 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:04,999 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,161 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,213 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,264 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,313 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,368 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,418 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,526 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,626 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,676 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:05,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-18 11:21:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:06,644 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:21:06,644 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:21:06,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:06,660 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:21:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:06,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:21:07,143 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 16 [2018-09-18 11:21:09,078 WARN L178 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 121 DAG size of output: 63 [2018-09-18 11:21:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 129 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:09,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:21:09,646 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-09-18 11:21:10,210 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 36 [2018-09-18 11:21:10,220 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2018-09-18 11:21:10,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-09-18 11:21:10,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 65 [2018-09-18 11:21:11,135 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 48 [2018-09-18 11:21:11,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:11,251 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:11,351 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:11,623 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:11,811 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:11,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:12,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:12,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:12,392 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:12,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:12,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:12,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:13,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:13,160 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:13,254 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:13,752 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:13,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:13,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,539 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,732 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,821 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:14,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,102 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,201 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,310 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,501 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,787 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:15,895 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,007 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,106 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,294 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,383 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,487 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,582 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,675 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,764 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,858 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:16,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,046 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,513 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,604 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,814 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:17,998 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,088 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,187 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,383 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,480 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,579 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,675 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,772 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:18,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,048 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,340 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,436 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,541 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,818 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:19,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,362 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,457 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,555 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,739 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:20,921 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:21,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:21,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:21,189 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:21,287 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:21,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:21,471 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2018-09-18 11:21:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:22,108 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:21:22,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6, 8, 6] total 26 [2018-09-18 11:21:22,109 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:21:22,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:21:22,110 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:21:22,110 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2018-09-18 11:21:22,111 INFO L87 Difference]: Start difference. First operand 8215 states and 11524 transitions. Second operand 15 states. [2018-09-18 11:21:37,456 WARN L178 SmtUtils]: Spent 14.52 s on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2018-09-18 11:22:27,165 WARN L178 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 61 [2018-09-18 11:22:39,275 WARN L178 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 59 [2018-09-18 11:22:42,354 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 15 [2018-09-18 11:22:50,867 WARN L178 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2018-09-18 11:22:57,863 WARN L178 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2018-09-18 11:23:32,329 WARN L178 SmtUtils]: Spent 27.41 s on a formula simplification. DAG size of input: 51 DAG size of output: 49 Received shutdown request... [2018-09-18 11:23:56,335 WARN L186 SmtUtils]: Removed 8 from assertion stack [2018-09-18 11:23:56,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-18 11:23:56,336 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:23:56,340 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:23:56,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:23:56 BoogieIcfgContainer [2018-09-18 11:23:56,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:23:56,342 INFO L168 Benchmark]: Toolchain (without parser) took 262767.47 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -737.3 MB). Peak memory consumption was 595.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:23:56,343 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-18 11:23:56,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 919.20 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:23:56,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 175.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:23:56,345 INFO L168 Benchmark]: Boogie Preprocessor took 414.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:23:56,346 INFO L168 Benchmark]: RCFGBuilder took 5042.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 175.5 MB). Peak memory consumption was 175.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:23:56,346 INFO L168 Benchmark]: TraceAbstraction took 256207.60 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 537.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -90.1 MB). Peak memory consumption was 447.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:23:56,351 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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. * CACSL2BoogieTranslator took 919.20 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 175.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 414.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5042.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 175.5 MB). Peak memory consumption was 175.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256207.60 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 537.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -90.1 MB). Peak memory consumption was 447.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (8215states) and FLOYD_HOARE automaton (currently 45 states, 15 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 66. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 256.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 174.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1233 SDtfs, 7835 SDslu, 1660 SDs, 0 SdLazy, 12851 SolverSat, 2088 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 104.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2588 GetRequests, 2301 SyntacticMatches, 186 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2448 ImplicationChecksByTransitivity, 135.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8215occurred in iteration=5, 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: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 181 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 79.4s InterpolantComputationTime, 2436 NumberOfCodeBlocks, 2436 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3668 ConstructedInterpolants, 205 QuantifiedInterpolants, 10042451 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2229 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 1977/2580 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-23-56-366.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-23-56-366.csv Completed graceful shutdown