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/Problem15_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:34:23,246 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:34:23,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:34:23,261 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:34:23,262 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:34:23,263 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:34:23,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:34:23,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:34:23,268 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:34:23,272 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:34:23,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:34:23,273 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:34:23,274 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:34:23,275 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:34:23,277 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:34:23,278 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:34:23,279 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:34:23,282 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:34:23,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:34:23,289 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:34:23,290 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:34:23,292 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:34:23,296 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:34:23,296 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:34:23,296 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:34:23,297 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:34:23,298 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:34:23,300 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:34:23,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:34:23,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:34:23,303 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:34:23,304 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:34:23,308 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 [2018-10-23 20:34:23,334 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:34:23,334 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:34:23,335 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:34:23,335 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:34:23,336 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:34:23,336 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:34:23,336 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:34:23,336 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:34:23,336 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:34:23,337 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:34:23,337 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:34:23,337 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:34:23,337 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:34:23,337 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:34:23,338 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:34:23,338 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:34:23,338 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:34:23,338 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:34:23,338 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:34:23,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:34:23,339 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:34:23,339 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:34:23,339 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:34:23,339 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:34:23,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:34:23,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:34:23,340 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:34:23,340 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:34:23,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:34:23,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:34:23,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:34:23,418 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:34:23,419 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:34:23,421 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-10-23 20:34:23,484 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/66c102332/62735d612cf6485b902803df71d8c7dc/FLAGc4fdb5d6f [2018-10-23 20:34:24,202 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:34:24,203 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-10-23 20:34:24,231 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/66c102332/62735d612cf6485b902803df71d8c7dc/FLAGc4fdb5d6f [2018-10-23 20:34:24,249 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/66c102332/62735d612cf6485b902803df71d8c7dc [2018-10-23 20:34:24,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:34:24,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:34:24,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:34:24,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:34:24,269 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:34:24,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:34:24" (1/1) ... [2018-10-23 20:34:24,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0c0f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:24, skipping insertion in model container [2018-10-23 20:34:24,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:34:24" (1/1) ... [2018-10-23 20:34:24,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:34:24,372 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:34:25,168 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:34:25,173 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:34:25,514 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:34:25,535 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:34:25,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25 WrapperNode [2018-10-23 20:34:25,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:34:25,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:34:25,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:34:25,537 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:34:25,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:25,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:25,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:34:25,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:34:25,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:34:25,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:34:25,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:25,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:25,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:25,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:26,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:26,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:26,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (1/1) ... [2018-10-23 20:34:26,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:34:26,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:34:26,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:34:26,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:34:26,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (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 [2018-10-23 20:34:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:34:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:34:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:34:35,229 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:34:35,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:34:35 BoogieIcfgContainer [2018-10-23 20:34:35,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:34:35,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:34:35,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:34:35,235 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:34:35,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:34:24" (1/3) ... [2018-10-23 20:34:35,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbbc68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:34:35, skipping insertion in model container [2018-10-23 20:34:35,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:25" (2/3) ... [2018-10-23 20:34:35,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbbc68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:34:35, skipping insertion in model container [2018-10-23 20:34:35,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:34:35" (3/3) ... [2018-10-23 20:34:35,239 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label52_true-unreach-call.c [2018-10-23 20:34:35,249 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:34:35,258 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:34:35,275 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:34:35,311 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:34:35,311 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:34:35,312 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:34:35,312 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:34:35,312 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:34:35,312 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:34:35,312 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:34:35,312 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:34:35,312 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:34:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-23 20:34:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-23 20:34:35,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:34:35,352 INFO L375 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] [2018-10-23 20:34:35,354 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:34:35,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:34:35,360 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-10-23 20:34:35,363 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:34:35,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:34:35,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:34:35,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:34:35,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:34:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:34:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:34:35,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:34:35,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:34:35,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:34:35,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:34:35,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:34:35,817 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-23 20:34:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:34:45,226 INFO L93 Difference]: Finished difference Result 1470 states and 2718 transitions. [2018-10-23 20:34:45,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:34:45,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-23 20:34:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:34:45,258 INFO L225 Difference]: With dead ends: 1470 [2018-10-23 20:34:45,259 INFO L226 Difference]: Without dead ends: 1038 [2018-10-23 20:34:45,265 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 [2018-10-23 20:34:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-10-23 20:34:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2018-10-23 20:34:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-10-23 20:34:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1670 transitions. [2018-10-23 20:34:45,386 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1670 transitions. Word has length 40 [2018-10-23 20:34:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:34:45,386 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1670 transitions. [2018-10-23 20:34:45,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:34:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1670 transitions. [2018-10-23 20:34:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 20:34:45,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:34:45,393 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:34:45,393 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:34:45,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:34:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1738752297, now seen corresponding path program 1 times [2018-10-23 20:34:45,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:34:45,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:34:45,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:34:45,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:34:45,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:34:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:34:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:34:45,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:34:45,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:34:45,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:34:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:34:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:34:45,712 INFO L87 Difference]: Start difference. First operand 1036 states and 1670 transitions. Second operand 4 states. [2018-10-23 20:34:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:34:51,424 INFO L93 Difference]: Finished difference Result 3937 states and 6425 transitions. [2018-10-23 20:34:51,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:34:51,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-23 20:34:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:34:51,440 INFO L225 Difference]: With dead ends: 3937 [2018-10-23 20:34:51,440 INFO L226 Difference]: Without dead ends: 2903 [2018-10-23 20:34:51,446 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 [2018-10-23 20:34:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2018-10-23 20:34:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1937. [2018-10-23 20:34:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-10-23 20:34:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2808 transitions. [2018-10-23 20:34:51,513 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2808 transitions. Word has length 129 [2018-10-23 20:34:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:34:51,514 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 2808 transitions. [2018-10-23 20:34:51,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:34:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2808 transitions. [2018-10-23 20:34:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-23 20:34:51,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:34:51,532 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:34:51,532 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:34:51,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:34:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1861564259, now seen corresponding path program 1 times [2018-10-23 20:34:51,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:34:51,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:34:51,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:34:51,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:34:51,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:34:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:34:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-23 20:34:52,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:34:52,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:34:52,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:34:52,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:34:52,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:34:52,495 INFO L87 Difference]: Start difference. First operand 1937 states and 2808 transitions. Second operand 5 states. [2018-10-23 20:35:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:35:01,539 INFO L93 Difference]: Finished difference Result 4777 states and 6638 transitions. [2018-10-23 20:35:01,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:35:01,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2018-10-23 20:35:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:35:01,554 INFO L225 Difference]: With dead ends: 4777 [2018-10-23 20:35:01,554 INFO L226 Difference]: Without dead ends: 2842 [2018-10-23 20:35:01,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:35:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-23 20:35:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2841. [2018-10-23 20:35:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2018-10-23 20:35:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3775 transitions. [2018-10-23 20:35:01,606 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3775 transitions. Word has length 314 [2018-10-23 20:35:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:35:01,607 INFO L481 AbstractCegarLoop]: Abstraction has 2841 states and 3775 transitions. [2018-10-23 20:35:01,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:35:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3775 transitions. [2018-10-23 20:35:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-23 20:35:01,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:35:01,616 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:35:01,616 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:35:01,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:35:01,617 INFO L82 PathProgramCache]: Analyzing trace with hash 636620843, now seen corresponding path program 1 times [2018-10-23 20:35:01,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:35:01,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:35:01,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:01,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:01,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:02,247 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:35:02,868 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-23 20:35:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 79 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:35:03,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:35:03,957 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 [2018-10-23 20:35:03,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:04,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:35:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:35:04,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:35:04,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-10-23 20:35:04,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 20:35:04,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 20:35:04,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:35:04,455 INFO L87 Difference]: Start difference. First operand 2841 states and 3775 transitions. Second operand 12 states. [2018-10-23 20:35:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:35:25,342 INFO L93 Difference]: Finished difference Result 9859 states and 12868 transitions. [2018-10-23 20:35:25,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 20:35:25,343 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 388 [2018-10-23 20:35:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:35:25,374 INFO L225 Difference]: With dead ends: 9859 [2018-10-23 20:35:25,374 INFO L226 Difference]: Without dead ends: 7020 [2018-10-23 20:35:25,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 392 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2018-10-23 20:35:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2018-10-23 20:35:25,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 5199. [2018-10-23 20:35:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2018-10-23 20:35:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6574 transitions. [2018-10-23 20:35:25,495 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6574 transitions. Word has length 388 [2018-10-23 20:35:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:35:25,497 INFO L481 AbstractCegarLoop]: Abstraction has 5199 states and 6574 transitions. [2018-10-23 20:35:25,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 20:35:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6574 transitions. [2018-10-23 20:35:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-23 20:35:25,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:35:25,508 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:35:25,509 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:35:25,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:35:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash -816750615, now seen corresponding path program 1 times [2018-10-23 20:35:25,509 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:35:25,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:35:25,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:25,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:25,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:26,470 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-23 20:35:26,818 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-23 20:35:27,327 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-10-23 20:35:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 315 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-23 20:35:27,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:35:27,779 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:35:27,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:27,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:35:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-23 20:35:28,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:35:28,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-23 20:35:28,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:35:28,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:35:28,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:35:28,030 INFO L87 Difference]: Start difference. First operand 5199 states and 6574 transitions. Second operand 8 states. [2018-10-23 20:35:38,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:35:38,474 INFO L93 Difference]: Finished difference Result 14766 states and 18159 transitions. [2018-10-23 20:35:38,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:35:38,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 406 [2018-10-23 20:35:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:35:38,499 INFO L225 Difference]: With dead ends: 14766 [2018-10-23 20:35:38,500 INFO L226 Difference]: Without dead ends: 6095 [2018-10-23 20:35:38,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 409 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:35:38,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2018-10-23 20:35:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 5755. [2018-10-23 20:35:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5755 states. [2018-10-23 20:35:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 6941 transitions. [2018-10-23 20:35:38,614 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 6941 transitions. Word has length 406 [2018-10-23 20:35:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:35:38,614 INFO L481 AbstractCegarLoop]: Abstraction has 5755 states and 6941 transitions. [2018-10-23 20:35:38,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:35:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 6941 transitions. [2018-10-23 20:35:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-10-23 20:35:38,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:35:38,630 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:35:38,631 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:35:38,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:35:38,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1496499592, now seen corresponding path program 1 times [2018-10-23 20:35:38,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:35:38,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:35:38,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:38,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:38,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-23 20:35:39,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:35:39,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:35:39,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:35:39,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:35:39,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:35:39,170 INFO L87 Difference]: Start difference. First operand 5755 states and 6941 transitions. Second operand 3 states. [2018-10-23 20:35:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:35:42,619 INFO L93 Difference]: Finished difference Result 15627 states and 19091 transitions. [2018-10-23 20:35:42,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:35:42,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 517 [2018-10-23 20:35:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:35:42,687 INFO L225 Difference]: With dead ends: 15627 [2018-10-23 20:35:42,687 INFO L226 Difference]: Without dead ends: 9874 [2018-10-23 20:35:42,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:35:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9874 states. [2018-10-23 20:35:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9874 to 9423. [2018-10-23 20:35:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9423 states. [2018-10-23 20:35:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 10994 transitions. [2018-10-23 20:35:42,892 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 10994 transitions. Word has length 517 [2018-10-23 20:35:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:35:42,894 INFO L481 AbstractCegarLoop]: Abstraction has 9423 states and 10994 transitions. [2018-10-23 20:35:42,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:35:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 10994 transitions. [2018-10-23 20:35:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-10-23 20:35:42,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:35:42,919 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:35:42,919 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:35:42,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:35:42,919 INFO L82 PathProgramCache]: Analyzing trace with hash -755033643, now seen corresponding path program 1 times [2018-10-23 20:35:42,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:35:42,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:35:43,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:43,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:43,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:43,746 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:35:44,304 WARN L179 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-23 20:35:44,711 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-10-23 20:35:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 271 proven. 136 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-23 20:35:45,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:35:45,220 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:35:45,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:45,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:35:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-23 20:35:45,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:35:45,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-23 20:35:45,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:35:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:35:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:35:45,689 INFO L87 Difference]: Start difference. First operand 9423 states and 10994 transitions. Second operand 9 states. [2018-10-23 20:35:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:35:54,929 INFO L93 Difference]: Finished difference Result 19251 states and 22398 transitions. [2018-10-23 20:35:54,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:35:54,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 540 [2018-10-23 20:35:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:35:54,956 INFO L225 Difference]: With dead ends: 19251 [2018-10-23 20:35:54,956 INFO L226 Difference]: Without dead ends: 9830 [2018-10-23 20:35:54,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 544 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:35:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2018-10-23 20:35:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 9420. [2018-10-23 20:35:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9420 states. [2018-10-23 20:35:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9420 states to 9420 states and 10491 transitions. [2018-10-23 20:35:55,114 INFO L78 Accepts]: Start accepts. Automaton has 9420 states and 10491 transitions. Word has length 540 [2018-10-23 20:35:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:35:55,115 INFO L481 AbstractCegarLoop]: Abstraction has 9420 states and 10491 transitions. [2018-10-23 20:35:55,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:35:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 9420 states and 10491 transitions. [2018-10-23 20:35:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-10-23 20:35:55,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:35:55,132 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:35:55,133 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:35:55,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:35:55,133 INFO L82 PathProgramCache]: Analyzing trace with hash 638222884, now seen corresponding path program 1 times [2018-10-23 20:35:55,133 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:35:55,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:35:55,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:55,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:35:55,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:35:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:35:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-23 20:35:55,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:35:55,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:35:55,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:35:55,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:35:55,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:35:55,748 INFO L87 Difference]: Start difference. First operand 9420 states and 10491 transitions. Second operand 3 states. [2018-10-23 20:36:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:02,147 INFO L93 Difference]: Finished difference Result 24429 states and 27345 transitions. [2018-10-23 20:36:02,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:36:02,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 570 [2018-10-23 20:36:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:02,175 INFO L225 Difference]: With dead ends: 24429 [2018-10-23 20:36:02,176 INFO L226 Difference]: Without dead ends: 15011 [2018-10-23 20:36:02,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:36:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15011 states. [2018-10-23 20:36:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15011 to 15011. [2018-10-23 20:36:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15011 states. [2018-10-23 20:36:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15011 states to 15011 states and 16626 transitions. [2018-10-23 20:36:02,394 INFO L78 Accepts]: Start accepts. Automaton has 15011 states and 16626 transitions. Word has length 570 [2018-10-23 20:36:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:02,395 INFO L481 AbstractCegarLoop]: Abstraction has 15011 states and 16626 transitions. [2018-10-23 20:36:02,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:36:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15011 states and 16626 transitions. [2018-10-23 20:36:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-10-23 20:36:02,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:02,409 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:02,410 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:02,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash 469499223, now seen corresponding path program 1 times [2018-10-23 20:36:02,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:02,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:02,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:02,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:02,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-23 20:36:03,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:03,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:36:03,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:36:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:36:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:36:03,472 INFO L87 Difference]: Start difference. First operand 15011 states and 16626 transitions. Second operand 5 states. [2018-10-23 20:36:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:10,234 INFO L93 Difference]: Finished difference Result 44098 states and 49253 transitions. [2018-10-23 20:36:10,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:36:10,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 578 [2018-10-23 20:36:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:10,283 INFO L225 Difference]: With dead ends: 44098 [2018-10-23 20:36:10,284 INFO L226 Difference]: Without dead ends: 29089 [2018-10-23 20:36:10,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:36:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29089 states. [2018-10-23 20:36:10,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29089 to 23619. [2018-10-23 20:36:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23619 states. [2018-10-23 20:36:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23619 states to 23619 states and 25731 transitions. [2018-10-23 20:36:10,655 INFO L78 Accepts]: Start accepts. Automaton has 23619 states and 25731 transitions. Word has length 578 [2018-10-23 20:36:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:10,656 INFO L481 AbstractCegarLoop]: Abstraction has 23619 states and 25731 transitions. [2018-10-23 20:36:10,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:36:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 23619 states and 25731 transitions. [2018-10-23 20:36:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-10-23 20:36:10,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:10,668 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:10,668 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:10,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:10,669 INFO L82 PathProgramCache]: Analyzing trace with hash 484713971, now seen corresponding path program 1 times [2018-10-23 20:36:10,669 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:10,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:10,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:10,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:10,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-10-23 20:36:11,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:11,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:36:11,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:36:11,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:36:11,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:36:11,254 INFO L87 Difference]: Start difference. First operand 23619 states and 25731 transitions. Second operand 3 states. [2018-10-23 20:36:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:13,481 INFO L93 Difference]: Finished difference Result 50259 states and 54388 transitions. [2018-10-23 20:36:13,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:36:13,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-10-23 20:36:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:13,509 INFO L225 Difference]: With dead ends: 50259 [2018-10-23 20:36:13,510 INFO L226 Difference]: Without dead ends: 15204 [2018-10-23 20:36:13,530 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 [2018-10-23 20:36:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15204 states. [2018-10-23 20:36:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15204 to 10178. [2018-10-23 20:36:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10178 states. [2018-10-23 20:36:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10178 states to 10178 states and 10606 transitions. [2018-10-23 20:36:13,679 INFO L78 Accepts]: Start accepts. Automaton has 10178 states and 10606 transitions. Word has length 581 [2018-10-23 20:36:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:13,680 INFO L481 AbstractCegarLoop]: Abstraction has 10178 states and 10606 transitions. [2018-10-23 20:36:13,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:36:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 10178 states and 10606 transitions. [2018-10-23 20:36:13,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-10-23 20:36:13,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:13,693 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:13,693 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:13,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:13,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1311033631, now seen corresponding path program 1 times [2018-10-23 20:36:13,694 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:13,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:13,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:13,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:13,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:14,395 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 20:36:14,623 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 20:36:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-23 20:36:14,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:36:14,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:36:14,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:36:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:36:14,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:36:14,997 INFO L87 Difference]: Start difference. First operand 10178 states and 10606 transitions. Second operand 6 states. [2018-10-23 20:36:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:18,394 INFO L93 Difference]: Finished difference Result 21998 states and 22907 transitions. [2018-10-23 20:36:18,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:36:18,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 729 [2018-10-23 20:36:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:18,408 INFO L225 Difference]: With dead ends: 21998 [2018-10-23 20:36:18,409 INFO L226 Difference]: Without dead ends: 12122 [2018-10-23 20:36:18,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:36:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12122 states. [2018-10-23 20:36:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12122 to 10362. [2018-10-23 20:36:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10362 states. [2018-10-23 20:36:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10362 states to 10362 states and 10705 transitions. [2018-10-23 20:36:18,692 INFO L78 Accepts]: Start accepts. Automaton has 10362 states and 10705 transitions. Word has length 729 [2018-10-23 20:36:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:18,693 INFO L481 AbstractCegarLoop]: Abstraction has 10362 states and 10705 transitions. [2018-10-23 20:36:18,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:36:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10362 states and 10705 transitions. [2018-10-23 20:36:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2018-10-23 20:36:18,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:18,705 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:36:18,706 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:18,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1761273195, now seen corresponding path program 1 times [2018-10-23 20:36:18,706 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:18,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:18,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:18,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:18,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 38 proven. 495 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-23 20:36:20,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:36:20,114 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:36:20,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:20,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:36:21,547 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 Int)) (and (<= (mod v_prenex_1 299926) (+ c_~a0~0 300072)) (<= (+ v_prenex_1 44) 0) (<= 0 v_prenex_1))) (exists ((v_~a0~0_825 Int)) (let ((.cse0 (mod v_~a0~0_825 299926))) (and (<= (+ v_~a0~0_825 44) 0) (<= .cse0 (+ c_~a0~0 300072)) (= .cse0 0)))) (exists ((v_prenex_2 Int)) (let ((.cse1 (mod v_prenex_2 299926))) (and (<= (+ v_prenex_2 44) 0) (< v_prenex_2 0) (<= .cse1 (+ c_~a0~0 599998)) (not (= .cse1 0)))))) is different from true [2018-10-23 20:36:24,184 WARN L179 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 164 DAG size of output: 23 [2018-10-23 20:36:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 350 trivial. 420 not checked. [2018-10-23 20:36:26,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:36:26,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-23 20:36:26,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:36:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:36:26,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=35, Unknown=1, NotChecked=12, Total=72 [2018-10-23 20:36:26,293 INFO L87 Difference]: Start difference. First operand 10362 states and 10705 transitions. Second operand 9 states. [2018-10-23 20:36:47,656 WARN L179 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2018-10-23 20:36:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:36:52,352 INFO L93 Difference]: Finished difference Result 30204 states and 31254 transitions. [2018-10-23 20:36:52,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:36:52,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 735 [2018-10-23 20:36:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:36:52,374 INFO L225 Difference]: With dead ends: 30204 [2018-10-23 20:36:52,375 INFO L226 Difference]: Without dead ends: 20144 [2018-10-23 20:36:52,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 732 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=42, Invalid=70, Unknown=2, NotChecked=18, Total=132 [2018-10-23 20:36:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20144 states. [2018-10-23 20:36:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20144 to 17735. [2018-10-23 20:36:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17735 states. [2018-10-23 20:36:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17735 states to 17735 states and 18345 transitions. [2018-10-23 20:36:52,626 INFO L78 Accepts]: Start accepts. Automaton has 17735 states and 18345 transitions. Word has length 735 [2018-10-23 20:36:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:36:52,627 INFO L481 AbstractCegarLoop]: Abstraction has 17735 states and 18345 transitions. [2018-10-23 20:36:52,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:36:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 17735 states and 18345 transitions. [2018-10-23 20:36:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2018-10-23 20:36:52,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:36:52,644 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:36:52,644 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:36:52,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:36:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1000230224, now seen corresponding path program 1 times [2018-10-23 20:36:52,645 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:36:52,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:36:52,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:52,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:52,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:36:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 699 proven. 175 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-23 20:36:53,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:36:53,723 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:36:53,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:36:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:36:53,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:36:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 733 proven. 141 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-23 20:36:54,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:36:54,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 10 [2018-10-23 20:36:54,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:36:54,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:36:54,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:36:54,669 INFO L87 Difference]: Start difference. First operand 17735 states and 18345 transitions. Second operand 10 states. [2018-10-23 20:37:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:04,671 INFO L93 Difference]: Finished difference Result 51386 states and 53268 transitions. [2018-10-23 20:37:04,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:37:04,671 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 793 [2018-10-23 20:37:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:04,706 INFO L225 Difference]: With dead ends: 51386 [2018-10-23 20:37:04,706 INFO L226 Difference]: Without dead ends: 33953 [2018-10-23 20:37:04,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 800 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-10-23 20:37:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33953 states. [2018-10-23 20:37:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33953 to 25376. [2018-10-23 20:37:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25376 states. [2018-10-23 20:37:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25376 states to 25376 states and 26035 transitions. [2018-10-23 20:37:05,111 INFO L78 Accepts]: Start accepts. Automaton has 25376 states and 26035 transitions. Word has length 793 [2018-10-23 20:37:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:05,112 INFO L481 AbstractCegarLoop]: Abstraction has 25376 states and 26035 transitions. [2018-10-23 20:37:05,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:37:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 25376 states and 26035 transitions. [2018-10-23 20:37:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-10-23 20:37:05,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:05,131 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:37:05,131 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:05,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash -611986148, now seen corresponding path program 1 times [2018-10-23 20:37:05,132 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:05,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:05,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:05,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:05,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-10-23 20:37:06,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:37:06,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:37:06,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:37:06,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:37:06,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:37:06,270 INFO L87 Difference]: Start difference. First operand 25376 states and 26035 transitions. Second operand 5 states. [2018-10-23 20:37:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:09,628 INFO L93 Difference]: Finished difference Result 56506 states and 58017 transitions. [2018-10-23 20:37:09,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:37:09,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 826 [2018-10-23 20:37:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:09,656 INFO L225 Difference]: With dead ends: 56506 [2018-10-23 20:37:09,656 INFO L226 Difference]: Without dead ends: 33234 [2018-10-23 20:37:09,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:37:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33234 states. [2018-10-23 20:37:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33234 to 17712. [2018-10-23 20:37:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17712 states. [2018-10-23 20:37:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17712 states to 17712 states and 18192 transitions. [2018-10-23 20:37:09,911 INFO L78 Accepts]: Start accepts. Automaton has 17712 states and 18192 transitions. Word has length 826 [2018-10-23 20:37:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:09,912 INFO L481 AbstractCegarLoop]: Abstraction has 17712 states and 18192 transitions. [2018-10-23 20:37:09,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:37:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 17712 states and 18192 transitions. [2018-10-23 20:37:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2018-10-23 20:37:09,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:09,932 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:37:09,933 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:09,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:09,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1368484188, now seen corresponding path program 1 times [2018-10-23 20:37:09,933 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:09,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:09,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:09,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:09,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:10,481 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-10-23 20:37:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1613 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-10-23 20:37:10,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:37:10,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:37:10,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:37:10,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:37:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:37:10,948 INFO L87 Difference]: Start difference. First operand 17712 states and 18192 transitions. Second operand 3 states. [2018-10-23 20:37:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:12,636 INFO L93 Difference]: Finished difference Result 36927 states and 37987 transitions. [2018-10-23 20:37:12,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:37:12,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1028 [2018-10-23 20:37:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:12,652 INFO L225 Difference]: With dead ends: 36927 [2018-10-23 20:37:12,652 INFO L226 Difference]: Without dead ends: 19517 [2018-10-23 20:37:12,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:37:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19517 states. [2018-10-23 20:37:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19517 to 17597. [2018-10-23 20:37:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17597 states. [2018-10-23 20:37:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17597 states to 17597 states and 18065 transitions. [2018-10-23 20:37:12,844 INFO L78 Accepts]: Start accepts. Automaton has 17597 states and 18065 transitions. Word has length 1028 [2018-10-23 20:37:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:12,844 INFO L481 AbstractCegarLoop]: Abstraction has 17597 states and 18065 transitions. [2018-10-23 20:37:12,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:37:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 17597 states and 18065 transitions. [2018-10-23 20:37:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2018-10-23 20:37:12,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:12,861 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:37:12,861 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:12,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash 437339455, now seen corresponding path program 1 times [2018-10-23 20:37:12,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:12,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:12,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:12,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:12,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 699 proven. 556 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2018-10-23 20:37:15,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:15,454 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:15,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:15,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:37:16,223 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 14 [2018-10-23 20:37:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 737 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2018-10-23 20:37:16,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:37:16,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-10-23 20:37:16,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:37:16,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:37:16,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:37:16,976 INFO L87 Difference]: Start difference. First operand 17597 states and 18065 transitions. Second operand 8 states. [2018-10-23 20:37:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:24,595 INFO L93 Difference]: Finished difference Result 51779 states and 53246 transitions. [2018-10-23 20:37:24,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:37:24,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1041 [2018-10-23 20:37:24,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:24,624 INFO L225 Difference]: With dead ends: 51779 [2018-10-23 20:37:24,624 INFO L226 Difference]: Without dead ends: 34484 [2018-10-23 20:37:24,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1040 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:37:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states. [2018-10-23 20:37:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34484 to 19096. [2018-10-23 20:37:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19096 states. [2018-10-23 20:37:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19096 states to 19096 states and 19479 transitions. [2018-10-23 20:37:24,913 INFO L78 Accepts]: Start accepts. Automaton has 19096 states and 19479 transitions. Word has length 1041 [2018-10-23 20:37:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 19096 states and 19479 transitions. [2018-10-23 20:37:24,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:37:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 19096 states and 19479 transitions. [2018-10-23 20:37:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2018-10-23 20:37:24,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:24,936 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:37:24,937 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:24,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:24,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1143307057, now seen corresponding path program 1 times [2018-10-23 20:37:24,937 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:24,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:24,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:24,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:24,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:26,071 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-23 20:37:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3773 backedges. 2480 proven. 0 refuted. 0 times theorem prover too weak. 1293 trivial. 0 not checked. [2018-10-23 20:37:27,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:37:27,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:37:27,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:37:27,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:37:27,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:37:27,119 INFO L87 Difference]: Start difference. First operand 19096 states and 19479 transitions. Second operand 5 states. [2018-10-23 20:37:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:30,363 INFO L93 Difference]: Finished difference Result 39705 states and 40510 transitions. [2018-10-23 20:37:30,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:37:30,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1345 [2018-10-23 20:37:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:30,392 INFO L225 Difference]: With dead ends: 39705 [2018-10-23 20:37:30,392 INFO L226 Difference]: Without dead ends: 22411 [2018-10-23 20:37:30,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:37:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22411 states. [2018-10-23 20:37:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 18196. [2018-10-23 20:37:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18196 states. [2018-10-23 20:37:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18196 states to 18196 states and 18552 transitions. [2018-10-23 20:37:30,602 INFO L78 Accepts]: Start accepts. Automaton has 18196 states and 18552 transitions. Word has length 1345 [2018-10-23 20:37:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:30,603 INFO L481 AbstractCegarLoop]: Abstraction has 18196 states and 18552 transitions. [2018-10-23 20:37:30,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:37:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 18196 states and 18552 transitions. [2018-10-23 20:37:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2018-10-23 20:37:30,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:30,628 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:37:30,628 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:30,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:30,629 INFO L82 PathProgramCache]: Analyzing trace with hash 194785411, now seen corresponding path program 1 times [2018-10-23 20:37:30,629 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:30,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:30,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:30,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:30,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3912 backedges. 2131 proven. 822 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2018-10-23 20:37:33,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:33,931 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:33,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:34,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:37:34,520 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 19 [2018-10-23 20:37:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3912 backedges. 2131 proven. 822 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2018-10-23 20:37:40,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:37:40,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-23 20:37:40,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:37:40,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:37:40,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:37:40,164 INFO L87 Difference]: Start difference. First operand 18196 states and 18552 transitions. Second operand 7 states. [2018-10-23 20:37:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:46,426 INFO L93 Difference]: Finished difference Result 45751 states and 46645 transitions. [2018-10-23 20:37:46,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:37:46,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1365 [2018-10-23 20:37:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:46,451 INFO L225 Difference]: With dead ends: 45751 [2018-10-23 20:37:46,451 INFO L226 Difference]: Without dead ends: 29357 [2018-10-23 20:37:46,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1370 GetRequests, 1363 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:37:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29357 states. [2018-10-23 20:37:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29357 to 19096. [2018-10-23 20:37:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19096 states. [2018-10-23 20:37:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19096 states to 19096 states and 19467 transitions. [2018-10-23 20:37:46,696 INFO L78 Accepts]: Start accepts. Automaton has 19096 states and 19467 transitions. Word has length 1365 [2018-10-23 20:37:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:46,697 INFO L481 AbstractCegarLoop]: Abstraction has 19096 states and 19467 transitions. [2018-10-23 20:37:46,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:37:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 19096 states and 19467 transitions. [2018-10-23 20:37:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1383 [2018-10-23 20:37:46,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:46,726 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:37:46,726 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:46,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash -327492949, now seen corresponding path program 1 times [2018-10-23 20:37:46,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:46,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:46,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:46,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:46,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 2143 proven. 587 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2018-10-23 20:37:50,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:50,182 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:50,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:50,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:37:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3968 backedges. 2730 proven. 0 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2018-10-23 20:37:52,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:37:52,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:37:52,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:37:52,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:37:52,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:37:52,401 INFO L87 Difference]: Start difference. First operand 19096 states and 19467 transitions. Second operand 6 states. [2018-10-23 20:37:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:37:55,891 INFO L93 Difference]: Finished difference Result 40600 states and 41402 transitions. [2018-10-23 20:37:55,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:37:55,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1382 [2018-10-23 20:37:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:37:55,905 INFO L225 Difference]: With dead ends: 40600 [2018-10-23 20:37:55,905 INFO L226 Difference]: Without dead ends: 16592 [2018-10-23 20:37:55,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1380 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:37:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16592 states. [2018-10-23 20:37:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16592 to 13885. [2018-10-23 20:37:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13885 states. [2018-10-23 20:37:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13885 states to 13885 states and 14111 transitions. [2018-10-23 20:37:56,088 INFO L78 Accepts]: Start accepts. Automaton has 13885 states and 14111 transitions. Word has length 1382 [2018-10-23 20:37:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:37:56,088 INFO L481 AbstractCegarLoop]: Abstraction has 13885 states and 14111 transitions. [2018-10-23 20:37:56,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:37:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13885 states and 14111 transitions. [2018-10-23 20:37:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1450 [2018-10-23 20:37:56,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:37:56,107 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:37:56,107 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:37:56,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:37:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash 491218878, now seen corresponding path program 1 times [2018-10-23 20:37:56,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:37:56,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:37:56,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:56,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:56,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:37:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:57,165 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:37:57,721 WARN L179 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2018-10-23 20:37:57,915 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2018-10-23 20:37:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 1620 proven. 340 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2018-10-23 20:37:59,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:37:59,391 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:37:59,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:37:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:37:59,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:38:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 1688 proven. 0 refuted. 0 times theorem prover too weak. 2046 trivial. 0 not checked. [2018-10-23 20:38:00,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:38:00,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-23 20:38:00,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:38:00,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:38:00,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:38:00,891 INFO L87 Difference]: Start difference. First operand 13885 states and 14111 transitions. Second operand 9 states. [2018-10-23 20:38:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:38:05,632 INFO L93 Difference]: Finished difference Result 28237 states and 28696 transitions. [2018-10-23 20:38:05,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:38:05,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1449 [2018-10-23 20:38:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:38:05,652 INFO L225 Difference]: With dead ends: 28237 [2018-10-23 20:38:05,652 INFO L226 Difference]: Without dead ends: 14654 [2018-10-23 20:38:05,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1453 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:38:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14654 states. [2018-10-23 20:38:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14654 to 12984. [2018-10-23 20:38:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12984 states. [2018-10-23 20:38:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12984 states to 12984 states and 13188 transitions. [2018-10-23 20:38:05,819 INFO L78 Accepts]: Start accepts. Automaton has 12984 states and 13188 transitions. Word has length 1449 [2018-10-23 20:38:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:38:05,820 INFO L481 AbstractCegarLoop]: Abstraction has 12984 states and 13188 transitions. [2018-10-23 20:38:05,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:38:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 12984 states and 13188 transitions. [2018-10-23 20:38:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1580 [2018-10-23 20:38:05,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:38:05,840 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:38:05,840 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:38:05,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:38:05,841 INFO L82 PathProgramCache]: Analyzing trace with hash -313788547, now seen corresponding path program 1 times [2018-10-23 20:38:05,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:38:05,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:38:05,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:38:05,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:38:05,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:38:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:38:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5271 backedges. 76 proven. 4203 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-10-23 20:38:10,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:38:10,747 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:38:10,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:38:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:38:11,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:38:11,772 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 19 [2018-10-23 20:38:14,339 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 76 DAG size of output: 28 [2018-10-23 20:38:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5271 backedges. 3524 proven. 407 refuted. 0 times theorem prover too weak. 1340 trivial. 0 not checked. [2018-10-23 20:38:17,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:38:17,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2018-10-23 20:38:17,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 20:38:17,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 20:38:17,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:38:17,973 INFO L87 Difference]: Start difference. First operand 12984 states and 13188 transitions. Second operand 12 states. Received shutdown request... [2018-10-23 20:38:18,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:38:18,127 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:38:18,132 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:38:18,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:38:18 BoogieIcfgContainer [2018-10-23 20:38:18,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:38:18,133 INFO L168 Benchmark]: Toolchain (without parser) took 233871.80 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 741.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:38:18,134 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:38:18,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1272.43 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:38:18,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 410.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:38:18,136 INFO L168 Benchmark]: Boogie Preprocessor took 231.32 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:38:18,136 INFO L168 Benchmark]: RCFGBuilder took 9051.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 307.5 MB). Peak memory consumption was 307.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:38:18,137 INFO L168 Benchmark]: TraceAbstraction took 222900.50 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 416.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:38:18,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1272.43 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 410.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.32 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9051.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 307.5 MB). Peak memory consumption was 307.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222900.50 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 416.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (12984states) and FLOYD_HOARE automaton (currently 3 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (39 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 222.8s OverallTime, 21 OverallIterations, 10 TraceHistogramMax, 154.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4971 SDtfs, 24750 SDslu, 3639 SDs, 0 SdLazy, 68571 SolverSat, 6659 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 127.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9860 GetRequests, 9709 SyntacticMatches, 30 SemanticMatches, 121 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 25.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25376occurred in iteration=13, 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: 3.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 78916 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 41.6s InterpolantComputationTime, 26013 NumberOfCodeBlocks, 26013 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 25982 ConstructedInterpolants, 1079 QuantifiedInterpolants, 142392371 SizeOfPredicates, 7 NumberOfNonLiveVariables, 11262 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 31 InterpolantComputations, 17 PerfectInterpolantSequences, 43227/52520 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown