java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:45:47,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:45:47,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:45:47,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:45:47,495 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:45:47,496 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:45:47,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:45:47,500 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:45:47,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:45:47,502 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:45:47,503 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:45:47,504 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:45:47,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:45:47,506 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:45:47,507 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:45:47,508 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:45:47,508 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:45:47,510 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:45:47,512 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:45:47,514 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:45:47,516 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:45:47,517 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:45:47,519 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:45:47,520 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:45:47,520 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:45:47,521 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:45:47,522 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:45:47,523 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:45:47,524 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:45:47,525 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:45:47,525 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:45:47,526 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:45:47,527 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:45:47,527 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:45:47,528 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:45:47,529 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:45:47,529 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:45:47,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:45:47,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:45:47,547 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:45:47,548 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:45:47,549 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:45:47,549 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:45:47,550 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:45:47,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:45:47,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:45:47,551 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:45:47,551 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:45:47,551 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:45:47,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:45:47,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:45:47,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:45:47,552 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:45:47,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:45:47,552 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:45:47,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:45:47,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:45:47,554 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:45:47,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:45:47,554 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:45:47,554 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:45:47,554 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:45:47,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:45:47,555 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:45:47,555 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:45:47,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:45:47,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:45:47,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:45:47,632 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:45:47,632 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:45:47,633 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label41_false-unreach-call.c [2018-10-24 14:45:47,690 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68b0b7f72/c7fa6992622b40da9250f25dbb85b447/FLAG83199988b [2018-10-24 14:45:48,592 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:45:48,592 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label41_false-unreach-call.c [2018-10-24 14:45:48,634 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68b0b7f72/c7fa6992622b40da9250f25dbb85b447/FLAG83199988b [2018-10-24 14:45:48,651 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68b0b7f72/c7fa6992622b40da9250f25dbb85b447 [2018-10-24 14:45:48,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:45:48,667 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:45:48,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:45:48,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:45:48,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:45:48,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:45:48" (1/1) ... [2018-10-24 14:45:48,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:48, skipping insertion in model container [2018-10-24 14:45:48,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:45:48" (1/1) ... [2018-10-24 14:45:48,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:45:48,936 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:45:50,943 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:45:50,948 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:45:52,001 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:45:52,062 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:45:52,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52 WrapperNode [2018-10-24 14:45:52,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:45:52,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:45:52,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:45:52,065 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:45:52,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:52,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:45:53,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:45:53,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:45:53,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:45:53,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:53,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... [2018-10-24 14:45:54,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:45:54,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:45:54,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:45:54,045 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:45:54,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 14:45:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:45:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:45:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:46:12,119 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:46:12,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:46:12 BoogieIcfgContainer [2018-10-24 14:46:12,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:46:12,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:46:12,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:46:12,124 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:46:12,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:45:48" (1/3) ... [2018-10-24 14:46:12,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:46:12, skipping insertion in model container [2018-10-24 14:46:12,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:45:52" (2/3) ... [2018-10-24 14:46:12,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3b2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:46:12, skipping insertion in model container [2018-10-24 14:46:12,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:46:12" (3/3) ... [2018-10-24 14:46:12,128 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label41_false-unreach-call.c [2018-10-24 14:46:12,138 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:46:12,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:46:12,167 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:46:12,213 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:46:12,214 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:46:12,214 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:46:12,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:46:12,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:46:12,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:46:12,215 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:46:12,215 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:46:12,215 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:46:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 14:46:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-24 14:46:12,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:46:12,272 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:46:12,274 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:46:12,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:46:12,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1805984234, now seen corresponding path program 1 times [2018-10-24 14:46:12,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:46:12,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:46:12,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:12,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:46:12,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:46:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:46:12,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:46:12,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:46:12,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:46:12,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:46:12,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:46:12,503 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 3 states. [2018-10-24 14:46:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:46:29,828 INFO L93 Difference]: Finished difference Result 4922 states and 9316 transitions. [2018-10-24 14:46:29,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:46:29,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-24 14:46:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:46:29,875 INFO L225 Difference]: With dead ends: 4922 [2018-10-24 14:46:29,875 INFO L226 Difference]: Without dead ends: 3169 [2018-10-24 14:46:29,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:46:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2018-10-24 14:46:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3168. [2018-10-24 14:46:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2018-10-24 14:46:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 5255 transitions. [2018-10-24 14:46:30,064 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 5255 transitions. Word has length 7 [2018-10-24 14:46:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:46:30,064 INFO L481 AbstractCegarLoop]: Abstraction has 3168 states and 5255 transitions. [2018-10-24 14:46:30,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:46:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 5255 transitions. [2018-10-24 14:46:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-24 14:46:30,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:46:30,068 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:46:30,069 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:46:30,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:46:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2088735311, now seen corresponding path program 1 times [2018-10-24 14:46:30,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:46:30,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:46:30,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:30,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:46:30,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:46:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:46:30,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:46:30,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:46:30,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:46:30,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:46:30,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:46:30,328 INFO L87 Difference]: Start difference. First operand 3168 states and 5255 transitions. Second operand 4 states. [2018-10-24 14:46:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:46:58,435 INFO L93 Difference]: Finished difference Result 12008 states and 20113 transitions. [2018-10-24 14:46:58,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:46:58,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2018-10-24 14:46:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:46:58,481 INFO L225 Difference]: With dead ends: 12008 [2018-10-24 14:46:58,481 INFO L226 Difference]: Without dead ends: 8842 [2018-10-24 14:46:58,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:46:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2018-10-24 14:46:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 5903. [2018-10-24 14:46:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5903 states. [2018-10-24 14:46:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 9592 transitions. [2018-10-24 14:46:58,616 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 9592 transitions. Word has length 77 [2018-10-24 14:46:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:46:58,617 INFO L481 AbstractCegarLoop]: Abstraction has 5903 states and 9592 transitions. [2018-10-24 14:46:58,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:46:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 9592 transitions. [2018-10-24 14:46:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-24 14:46:58,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:46:58,624 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:46:58,625 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:46:58,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:46:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1581965795, now seen corresponding path program 1 times [2018-10-24 14:46:58,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:46:58,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:46:58,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:58,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:46:58,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:46:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:46:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:46:58,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:46:58,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:46:58,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:46:58,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:46:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:46:58,920 INFO L87 Difference]: Start difference. First operand 5903 states and 9592 transitions. Second operand 5 states. [2018-10-24 14:47:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:16,853 INFO L93 Difference]: Finished difference Result 14545 states and 23014 transitions. [2018-10-24 14:47:16,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:47:16,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2018-10-24 14:47:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:16,897 INFO L225 Difference]: With dead ends: 14545 [2018-10-24 14:47:16,898 INFO L226 Difference]: Without dead ends: 8644 [2018-10-24 14:47:16,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:47:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8644 states. [2018-10-24 14:47:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8644 to 8640. [2018-10-24 14:47:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8640 states. [2018-10-24 14:47:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8640 states to 8640 states and 12390 transitions. [2018-10-24 14:47:17,071 INFO L78 Accepts]: Start accepts. Automaton has 8640 states and 12390 transitions. Word has length 82 [2018-10-24 14:47:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:17,071 INFO L481 AbstractCegarLoop]: Abstraction has 8640 states and 12390 transitions. [2018-10-24 14:47:17,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:47:17,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8640 states and 12390 transitions. [2018-10-24 14:47:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 14:47:17,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:17,074 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:47:17,074 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:17,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:17,075 INFO L82 PathProgramCache]: Analyzing trace with hash 546429502, now seen corresponding path program 1 times [2018-10-24 14:47:17,075 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:17,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:17,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:17,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:17,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:17,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:17,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:17,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:17,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:17,412 INFO L87 Difference]: Start difference. First operand 8640 states and 12390 transitions. Second operand 4 states. [2018-10-24 14:47:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:40,013 INFO L93 Difference]: Finished difference Result 33782 states and 48567 transitions. [2018-10-24 14:47:40,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:47:40,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-24 14:47:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:40,080 INFO L225 Difference]: With dead ends: 33782 [2018-10-24 14:47:40,081 INFO L226 Difference]: Without dead ends: 25144 [2018-10-24 14:47:40,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25144 states. [2018-10-24 14:47:40,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25144 to 16851. [2018-10-24 14:47:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16851 states. [2018-10-24 14:47:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16851 states to 16851 states and 21746 transitions. [2018-10-24 14:47:40,487 INFO L78 Accepts]: Start accepts. Automaton has 16851 states and 21746 transitions. Word has length 99 [2018-10-24 14:47:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:40,487 INFO L481 AbstractCegarLoop]: Abstraction has 16851 states and 21746 transitions. [2018-10-24 14:47:40,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:47:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 16851 states and 21746 transitions. [2018-10-24 14:47:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 14:47:40,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:40,490 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:47:40,490 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:40,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:40,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1730400051, now seen corresponding path program 1 times [2018-10-24 14:47:40,496 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:40,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:40,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:40,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:40,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:40,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:40,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:40,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:40,788 INFO L87 Difference]: Start difference. First operand 16851 states and 21746 transitions. Second operand 4 states. [2018-10-24 14:47:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:58,762 INFO L93 Difference]: Finished difference Result 64022 states and 83146 transitions. [2018-10-24 14:47:58,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:47:58,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-24 14:47:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:58,872 INFO L225 Difference]: With dead ends: 64022 [2018-10-24 14:47:58,872 INFO L226 Difference]: Without dead ends: 47173 [2018-10-24 14:47:58,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:58,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47173 states. [2018-10-24 14:47:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47173 to 47161. [2018-10-24 14:47:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47161 states. [2018-10-24 14:47:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47161 states to 47161 states and 55554 transitions. [2018-10-24 14:47:59,497 INFO L78 Accepts]: Start accepts. Automaton has 47161 states and 55554 transitions. Word has length 105 [2018-10-24 14:47:59,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:59,499 INFO L481 AbstractCegarLoop]: Abstraction has 47161 states and 55554 transitions. [2018-10-24 14:47:59,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:47:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 47161 states and 55554 transitions. [2018-10-24 14:47:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-24 14:47:59,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:59,508 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-24 14:47:59,510 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:59,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -141080982, now seen corresponding path program 1 times [2018-10-24 14:47:59,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:59,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:59,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:59,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:59,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:59,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:59,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:59,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:47:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:47:59,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:47:59,744 INFO L87 Difference]: Start difference. First operand 47161 states and 55554 transitions. Second operand 3 states. [2018-10-24 14:48:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:15,146 INFO L93 Difference]: Finished difference Result 110733 states and 132004 transitions. [2018-10-24 14:48:15,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:48:15,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2018-10-24 14:48:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:15,232 INFO L225 Difference]: With dead ends: 110733 [2018-10-24 14:48:15,232 INFO L226 Difference]: Without dead ends: 63574 [2018-10-24 14:48:15,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:48:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63574 states. [2018-10-24 14:48:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63574 to 63569. [2018-10-24 14:48:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63569 states. [2018-10-24 14:48:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63569 states to 63569 states and 73062 transitions. [2018-10-24 14:48:15,906 INFO L78 Accepts]: Start accepts. Automaton has 63569 states and 73062 transitions. Word has length 215 [2018-10-24 14:48:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:15,906 INFO L481 AbstractCegarLoop]: Abstraction has 63569 states and 73062 transitions. [2018-10-24 14:48:15,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:48:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 63569 states and 73062 transitions. [2018-10-24 14:48:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-24 14:48:15,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:15,914 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2018-10-24 14:48:15,914 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:15,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:15,915 INFO L82 PathProgramCache]: Analyzing trace with hash 409948680, now seen corresponding path program 1 times [2018-10-24 14:48:15,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:15,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:15,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:15,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:15,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:16,431 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 14:48:16,985 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 14:48:17,373 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 14:48:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 14:48:17,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:17,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:48:17,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:48:17,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:48:17,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:48:17,768 INFO L87 Difference]: Start difference. First operand 63569 states and 73062 transitions. Second operand 7 states. [2018-10-24 14:48:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:49,103 INFO L93 Difference]: Finished difference Result 149008 states and 169440 transitions. [2018-10-24 14:48:49,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:48:49,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2018-10-24 14:48:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:49,196 INFO L225 Difference]: With dead ends: 149008 [2018-10-24 14:48:49,196 INFO L226 Difference]: Without dead ends: 85441 [2018-10-24 14:48:49,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:48:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85441 states. [2018-10-24 14:48:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85441 to 81337. [2018-10-24 14:48:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81337 states. [2018-10-24 14:48:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81337 states to 81337 states and 91696 transitions. [2018-10-24 14:48:50,042 INFO L78 Accepts]: Start accepts. Automaton has 81337 states and 91696 transitions. Word has length 435 [2018-10-24 14:48:50,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:50,042 INFO L481 AbstractCegarLoop]: Abstraction has 81337 states and 91696 transitions. [2018-10-24 14:48:50,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:48:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 81337 states and 91696 transitions. [2018-10-24 14:48:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-10-24 14:48:50,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:50,051 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2018-10-24 14:48:50,052 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:50,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:50,052 INFO L82 PathProgramCache]: Analyzing trace with hash 509135022, now seen corresponding path program 1 times [2018-10-24 14:48:50,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:50,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:50,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:50,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:50,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-24 14:48:50,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:50,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:50,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:48:50,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:48:50,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:48:50,480 INFO L87 Difference]: Start difference. First operand 81337 states and 91696 transitions. Second operand 3 states. [2018-10-24 14:49:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:03,654 INFO L93 Difference]: Finished difference Result 221493 states and 250978 transitions. [2018-10-24 14:49:03,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:49:03,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 463 [2018-10-24 14:49:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:03,819 INFO L225 Difference]: With dead ends: 221493 [2018-10-24 14:49:03,820 INFO L226 Difference]: Without dead ends: 140158 [2018-10-24 14:49:03,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:49:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140158 states. [2018-10-24 14:49:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140158 to 130518. [2018-10-24 14:49:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130518 states. [2018-10-24 14:49:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130518 states to 130518 states and 148585 transitions. [2018-10-24 14:49:05,090 INFO L78 Accepts]: Start accepts. Automaton has 130518 states and 148585 transitions. Word has length 463 [2018-10-24 14:49:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:05,091 INFO L481 AbstractCegarLoop]: Abstraction has 130518 states and 148585 transitions. [2018-10-24 14:49:05,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:49:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 130518 states and 148585 transitions. [2018-10-24 14:49:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2018-10-24 14:49:05,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:05,125 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:49:05,126 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:05,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash 670992022, now seen corresponding path program 1 times [2018-10-24 14:49:05,126 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:05,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:05,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:05,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:05,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 14:49:07,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:07,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:49:07,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:49:07,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:49:07,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:07,049 INFO L87 Difference]: Start difference. First operand 130518 states and 148585 transitions. Second operand 4 states. [2018-10-24 14:49:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:27,835 INFO L93 Difference]: Finished difference Result 263770 states and 300280 transitions. [2018-10-24 14:49:27,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:49:27,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 911 [2018-10-24 14:49:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:27,984 INFO L225 Difference]: With dead ends: 263770 [2018-10-24 14:49:27,985 INFO L226 Difference]: Without dead ends: 133254 [2018-10-24 14:49:28,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133254 states. [2018-10-24 14:49:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133254 to 122319. [2018-10-24 14:49:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122319 states. [2018-10-24 14:49:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122319 states to 122319 states and 135084 transitions. [2018-10-24 14:49:29,173 INFO L78 Accepts]: Start accepts. Automaton has 122319 states and 135084 transitions. Word has length 911 [2018-10-24 14:49:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:29,175 INFO L481 AbstractCegarLoop]: Abstraction has 122319 states and 135084 transitions. [2018-10-24 14:49:29,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:49:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 122319 states and 135084 transitions. [2018-10-24 14:49:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2018-10-24 14:49:29,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:29,199 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:49:29,199 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:29,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1904395430, now seen corresponding path program 1 times [2018-10-24 14:49:29,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:29,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:29,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:29,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:29,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:30,076 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 14:49:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 10 proven. 472 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-10-24 14:49:32,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:49:32,007 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 14:49:32,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:32,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:49:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2018-10-24 14:49:33,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:49:33,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-24 14:49:33,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:49:33,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:49:33,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:49:33,265 INFO L87 Difference]: Start difference. First operand 122319 states and 135084 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 14:49:46,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:49:46,792 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:49:46,797 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:49:46,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:49:46 BoogieIcfgContainer [2018-10-24 14:49:46,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:49:46,798 INFO L168 Benchmark]: Toolchain (without parser) took 238132.51 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 723.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:49:46,799 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:49:46,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3394.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:49:46,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 1211.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:49:46,802 INFO L168 Benchmark]: Boogie Preprocessor took 767.73 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 113.3 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:49:46,803 INFO L168 Benchmark]: RCFGBuilder took 18075.66 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 288.4 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -377.5 MB). Peak memory consumption was 826.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:49:46,804 INFO L168 Benchmark]: TraceAbstraction took 214676.49 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -660.6 MB). Peak memory consumption was 593.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:49:46,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3394.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1211.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 767.73 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 113.3 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18075.66 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 288.4 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -377.5 MB). Peak memory consumption was 826.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214676.49 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -660.6 MB). Peak memory consumption was 593.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (122319states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (47967 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 214.5s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 199.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14472 SDtfs, 38389 SDslu, 3521 SDs, 0 SdLazy, 82184 SolverSat, 17013 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 170.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1028 GetRequests, 990 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130518occurred in iteration=8, 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: 5.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 35933 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 4340 NumberOfCodeBlocks, 4340 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4329 ConstructedInterpolants, 0 QuantifiedInterpolants, 10620475 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1103 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 1902/2374 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown