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/Problem17_label46_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:37:04,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:37:04,196 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:37:04,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:37:04,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:37:04,210 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:37:04,211 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:37:04,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:37:04,215 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:37:04,216 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:37:04,217 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:37:04,217 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:37:04,218 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:37:04,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:37:04,220 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:37:04,221 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:37:04,222 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:37:04,224 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:37:04,226 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:37:04,227 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:37:04,228 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:37:04,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:37:04,232 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:37:04,232 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:37:04,232 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:37:04,233 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:37:04,234 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:37:04,235 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:37:04,235 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:37:04,236 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:37:04,237 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:37:04,237 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:37:04,237 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:37:04,238 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:37:04,239 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:37:04,239 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:37:04,240 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 [2018-10-26 19:37:04,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:37:04,254 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:37:04,255 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:37:04,255 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:37:04,256 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:37:04,256 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:37:04,256 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:37:04,257 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:37:04,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:37:04,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:37:04,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:37:04,257 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:37:04,258 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:37:04,258 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:37:04,258 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:37:04,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:37:04,258 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:37:04,259 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:37:04,259 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:37:04,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:37:04,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:37:04,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:37:04,260 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:37:04,260 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:37:04,260 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:37:04,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:37:04,260 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:37:04,261 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:37:04,334 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:37:04,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:37:04,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:37:04,353 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:37:04,353 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:37:04,354 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46_false-unreach-call.c [2018-10-26 19:37:04,415 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60e2e4bfd/be3cbfb444e643d0aae69d8318bf28f5/FLAG3c65c4ce2 [2018-10-26 19:37:05,170 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:37:05,172 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label46_false-unreach-call.c [2018-10-26 19:37:05,195 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60e2e4bfd/be3cbfb444e643d0aae69d8318bf28f5/FLAG3c65c4ce2 [2018-10-26 19:37:05,211 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60e2e4bfd/be3cbfb444e643d0aae69d8318bf28f5 [2018-10-26 19:37:05,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:37:05,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:37:05,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:37:05,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:37:05,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:37:05,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:37:05" (1/1) ... [2018-10-26 19:37:05,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1986afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:05, skipping insertion in model container [2018-10-26 19:37:05,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:37:05" (1/1) ... [2018-10-26 19:37:05,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:37:05,372 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:37:06,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:37:06,299 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:37:06,700 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:37:06,724 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:37:06,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06 WrapperNode [2018-10-26 19:37:06,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:37:06,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:37:06,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:37:06,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:37:06,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:06,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:37:07,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:37:07,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:37:07,282 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:37:07,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (1/1) ... [2018-10-26 19:37:07,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:37:07,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:37:07,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:37:07,672 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:37:07,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (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 [2018-10-26 19:37:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:37:07,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:37:07,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:37:17,908 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:37:17,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:37:17 BoogieIcfgContainer [2018-10-26 19:37:17,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:37:17,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:37:17,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:37:17,914 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:37:17,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:37:05" (1/3) ... [2018-10-26 19:37:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79faacad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:37:17, skipping insertion in model container [2018-10-26 19:37:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:06" (2/3) ... [2018-10-26 19:37:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79faacad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:37:17, skipping insertion in model container [2018-10-26 19:37:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:37:17" (3/3) ... [2018-10-26 19:37:17,921 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label46_false-unreach-call.c [2018-10-26 19:37:17,932 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:37:17,946 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:37:17,966 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:37:18,010 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:37:18,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:37:18,011 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:37:18,011 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:37:18,011 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:37:18,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:37:18,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:37:18,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:37:18,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:37:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 19:37:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 19:37:18,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:18,053 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:37:18,056 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:18,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:18,062 INFO L82 PathProgramCache]: Analyzing trace with hash -159296518, now seen corresponding path program 1 times [2018-10-26 19:37:18,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:18,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:18,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:18,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:37:18,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:37:18,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:37:18,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:37:18,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:37:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:37:18,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:37:18,435 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 19:37:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:29,370 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-26 19:37:29,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:37:29,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-26 19:37:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:29,407 INFO L225 Difference]: With dead ends: 2122 [2018-10-26 19:37:29,407 INFO L226 Difference]: Without dead ends: 1524 [2018-10-26 19:37:29,415 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 [2018-10-26 19:37:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-26 19:37:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-26 19:37:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-26 19:37:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-26 19:37:29,551 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 11 [2018-10-26 19:37:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:29,551 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-26 19:37:29,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:37:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-26 19:37:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-26 19:37:29,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:29,556 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:37:29,556 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:29,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1530449928, now seen corresponding path program 1 times [2018-10-26 19:37:29,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:29,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:29,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:37:29,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:37:29,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:37:29,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:37:29,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:37:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:37:29,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:37:29,915 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-26 19:37:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:44,386 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-26 19:37:44,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:37:44,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-26 19:37:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:44,409 INFO L225 Difference]: With dead ends: 5604 [2018-10-26 19:37:44,409 INFO L226 Difference]: Without dead ends: 4109 [2018-10-26 19:37:44,416 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 [2018-10-26 19:37:44,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-26 19:37:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-26 19:37:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-26 19:37:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-26 19:37:44,504 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 86 [2018-10-26 19:37:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:44,504 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-26 19:37:44,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:37:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-26 19:37:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 19:37:44,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:44,513 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:37:44,513 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:44,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 296549568, now seen corresponding path program 1 times [2018-10-26 19:37:44,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:44,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:44,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:44,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:37:44,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:37:44,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:37:44,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:37:44,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:37:44,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:37:44,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:37:44,884 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-26 19:37:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:37:51,581 INFO L93 Difference]: Finished difference Result 15444 states and 23003 transitions. [2018-10-26 19:37:51,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:37:51,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-26 19:37:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:37:51,633 INFO L225 Difference]: With dead ends: 15444 [2018-10-26 19:37:51,634 INFO L226 Difference]: Without dead ends: 11348 [2018-10-26 19:37:51,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:37:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11348 states. [2018-10-26 19:37:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11348 to 11348. [2018-10-26 19:37:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11348 states. [2018-10-26 19:37:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 14691 transitions. [2018-10-26 19:37:51,833 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 14691 transitions. Word has length 141 [2018-10-26 19:37:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:37:51,834 INFO L481 AbstractCegarLoop]: Abstraction has 11348 states and 14691 transitions. [2018-10-26 19:37:51,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:37:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 14691 transitions. [2018-10-26 19:37:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-26 19:37:51,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:37:51,841 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:37:51,841 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:37:51,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:37:51,842 INFO L82 PathProgramCache]: Analyzing trace with hash 866583566, now seen corresponding path program 1 times [2018-10-26 19:37:51,842 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:37:51,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:37:51,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:51,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:37:51,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:37:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 19:37:52,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:37:52,293 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 [2018-10-26 19:37:52,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:37:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:37:52,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:37:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 19:37:52,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:37:52,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:37:52,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:37:52,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:37:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:37:52,608 INFO L87 Difference]: Start difference. First operand 11348 states and 14691 transitions. Second operand 5 states. [2018-10-26 19:38:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:38:05,647 INFO L93 Difference]: Finished difference Result 33345 states and 43382 transitions. [2018-10-26 19:38:05,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:38:05,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-10-26 19:38:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:38:05,710 INFO L225 Difference]: With dead ends: 33345 [2018-10-26 19:38:05,710 INFO L226 Difference]: Without dead ends: 18059 [2018-10-26 19:38:05,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:38:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18059 states. [2018-10-26 19:38:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18059 to 16776. [2018-10-26 19:38:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16776 states. [2018-10-26 19:38:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16776 states to 16776 states and 19396 transitions. [2018-10-26 19:38:06,028 INFO L78 Accepts]: Start accepts. Automaton has 16776 states and 19396 transitions. Word has length 216 [2018-10-26 19:38:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:38:06,028 INFO L481 AbstractCegarLoop]: Abstraction has 16776 states and 19396 transitions. [2018-10-26 19:38:06,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:38:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 16776 states and 19396 transitions. [2018-10-26 19:38:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-26 19:38:06,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:38:06,032 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:38:06,032 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:38:06,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:38:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash -772650284, now seen corresponding path program 1 times [2018-10-26 19:38:06,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:38:06,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:38:06,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:06,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:06,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:06,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:38:06,638 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 [2018-10-26 19:38:06,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:06,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:38:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:07,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:38:07,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-26 19:38:07,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:38:07,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:38:07,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:38:07,072 INFO L87 Difference]: Start difference. First operand 16776 states and 19396 transitions. Second operand 7 states. [2018-10-26 19:38:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:38:20,329 INFO L93 Difference]: Finished difference Result 48947 states and 56821 transitions. [2018-10-26 19:38:20,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:38:20,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2018-10-26 19:38:20,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:38:20,382 INFO L225 Difference]: With dead ends: 48947 [2018-10-26 19:38:20,383 INFO L226 Difference]: Without dead ends: 28317 [2018-10-26 19:38:20,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:38:20,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28317 states. [2018-10-26 19:38:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28317 to 26150. [2018-10-26 19:38:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26150 states. [2018-10-26 19:38:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26150 states to 26150 states and 29376 transitions. [2018-10-26 19:38:20,813 INFO L78 Accepts]: Start accepts. Automaton has 26150 states and 29376 transitions. Word has length 233 [2018-10-26 19:38:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:38:20,813 INFO L481 AbstractCegarLoop]: Abstraction has 26150 states and 29376 transitions. [2018-10-26 19:38:20,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:38:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 26150 states and 29376 transitions. [2018-10-26 19:38:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-10-26 19:38:20,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:38:20,822 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:38:20,823 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:38:20,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:38:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2069393758, now seen corresponding path program 1 times [2018-10-26 19:38:20,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:38:20,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:38:20,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:20,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:20,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 204 proven. 83 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-26 19:38:21,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:38:21,657 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 [2018-10-26 19:38:21,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:21,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:38:22,051 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2018-10-26 19:38:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-26 19:38:22,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:38:22,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:38:22,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:38:22,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:38:22,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:38:22,839 INFO L87 Difference]: Start difference. First operand 26150 states and 29376 transitions. Second operand 6 states. [2018-10-26 19:38:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:38:34,647 INFO L93 Difference]: Finished difference Result 76661 states and 86349 transitions. [2018-10-26 19:38:34,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:38:34,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 355 [2018-10-26 19:38:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:38:34,718 INFO L225 Difference]: With dead ends: 76661 [2018-10-26 19:38:34,718 INFO L226 Difference]: Without dead ends: 50939 [2018-10-26 19:38:34,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:38:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50939 states. [2018-10-26 19:38:35,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50939 to 50489. [2018-10-26 19:38:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50489 states. [2018-10-26 19:38:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50489 states to 50489 states and 55313 transitions. [2018-10-26 19:38:35,678 INFO L78 Accepts]: Start accepts. Automaton has 50489 states and 55313 transitions. Word has length 355 [2018-10-26 19:38:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:38:35,678 INFO L481 AbstractCegarLoop]: Abstraction has 50489 states and 55313 transitions. [2018-10-26 19:38:35,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:38:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 50489 states and 55313 transitions. [2018-10-26 19:38:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-26 19:38:35,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:38:35,688 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:38:35,689 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:38:35,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:38:35,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1925833566, now seen corresponding path program 1 times [2018-10-26 19:38:35,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:38:35,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:38:35,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:35,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:35,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 26 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:36,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:38:36,289 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 [2018-10-26 19:38:36,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:36,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:38:59,601 WARN L179 SmtUtils]: Spent 23.03 s on a formula simplification. DAG size of input: 126 DAG size of output: 17 [2018-10-26 19:38:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-10-26 19:38:59,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:38:59,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:38:59,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:38:59,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:38:59,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:38:59,699 INFO L87 Difference]: Start difference. First operand 50489 states and 55313 transitions. Second operand 7 states. [2018-10-26 19:39:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:39:19,101 INFO L93 Difference]: Finished difference Result 129124 states and 141697 transitions. [2018-10-26 19:39:19,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:39:19,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 382 [2018-10-26 19:39:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:39:19,196 INFO L225 Difference]: With dead ends: 129124 [2018-10-26 19:39:19,196 INFO L226 Difference]: Without dead ends: 74778 [2018-10-26 19:39:19,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:39:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74778 states. [2018-10-26 19:39:20,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74778 to 69214. [2018-10-26 19:39:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69214 states. [2018-10-26 19:39:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69214 states to 69214 states and 74248 transitions. [2018-10-26 19:39:20,166 INFO L78 Accepts]: Start accepts. Automaton has 69214 states and 74248 transitions. Word has length 382 [2018-10-26 19:39:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:39:20,167 INFO L481 AbstractCegarLoop]: Abstraction has 69214 states and 74248 transitions. [2018-10-26 19:39:20,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:39:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 69214 states and 74248 transitions. [2018-10-26 19:39:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-26 19:39:20,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:20,188 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:39:20,189 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:20,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:20,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2099046973, now seen corresponding path program 1 times [2018-10-26 19:39:20,189 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:20,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:20,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:20,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:20,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 19:39:20,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:39:20,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:39:20,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:39:20,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:39:20,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:39:20,813 INFO L87 Difference]: Start difference. First operand 69214 states and 74248 transitions. Second operand 3 states. [2018-10-26 19:39:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:39:25,270 INFO L93 Difference]: Finished difference Result 145671 states and 156434 transitions. [2018-10-26 19:39:25,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:39:25,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 492 [2018-10-26 19:39:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:39:25,363 INFO L225 Difference]: With dead ends: 145671 [2018-10-26 19:39:25,364 INFO L226 Difference]: Without dead ends: 76885 [2018-10-26 19:39:25,405 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 [2018-10-26 19:39:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76885 states. [2018-10-26 19:39:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76885 to 67931. [2018-10-26 19:39:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67931 states. [2018-10-26 19:39:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67931 states to 67931 states and 72395 transitions. [2018-10-26 19:39:26,203 INFO L78 Accepts]: Start accepts. Automaton has 67931 states and 72395 transitions. Word has length 492 [2018-10-26 19:39:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:39:26,204 INFO L481 AbstractCegarLoop]: Abstraction has 67931 states and 72395 transitions. [2018-10-26 19:39:26,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:39:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 67931 states and 72395 transitions. [2018-10-26 19:39:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-10-26 19:39:26,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:26,229 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:39:26,229 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:26,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:26,230 INFO L82 PathProgramCache]: Analyzing trace with hash 851280183, now seen corresponding path program 1 times [2018-10-26 19:39:26,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:26,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:26,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:26,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:26,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-26 19:39:27,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:39:27,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:39:27,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:39:27,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:39:27,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:39:27,015 INFO L87 Difference]: Start difference. First operand 67931 states and 72395 transitions. Second operand 5 states. [2018-10-26 19:39:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:39:34,420 INFO L93 Difference]: Finished difference Result 140566 states and 149724 transitions. [2018-10-26 19:39:34,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:39:34,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 544 [2018-10-26 19:39:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:39:34,505 INFO L225 Difference]: With dead ends: 140566 [2018-10-26 19:39:34,505 INFO L226 Difference]: Without dead ends: 79035 [2018-10-26 19:39:34,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:39:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79035 states. [2018-10-26 19:39:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79035 to 63625. [2018-10-26 19:39:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63625 states. [2018-10-26 19:39:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63625 states to 63625 states and 67233 transitions. [2018-10-26 19:39:35,254 INFO L78 Accepts]: Start accepts. Automaton has 63625 states and 67233 transitions. Word has length 544 [2018-10-26 19:39:35,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:39:35,255 INFO L481 AbstractCegarLoop]: Abstraction has 63625 states and 67233 transitions. [2018-10-26 19:39:35,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:39:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 63625 states and 67233 transitions. [2018-10-26 19:39:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-26 19:39:35,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:35,272 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:39:35,272 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:35,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash -309342588, now seen corresponding path program 1 times [2018-10-26 19:39:35,273 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:35,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:35,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:35,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 19:39:35,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:39:35,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:39:35,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:39:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:39:35,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:39:35,783 INFO L87 Difference]: Start difference. First operand 63625 states and 67233 transitions. Second operand 3 states. [2018-10-26 19:39:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:39:38,455 INFO L93 Difference]: Finished difference Result 130234 states and 137562 transitions. [2018-10-26 19:39:38,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:39:38,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 548 [2018-10-26 19:39:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:39:38,521 INFO L225 Difference]: With dead ends: 130234 [2018-10-26 19:39:38,521 INFO L226 Difference]: Without dead ends: 67037 [2018-10-26 19:39:38,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:39:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67037 states. [2018-10-26 19:39:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67037 to 50813. [2018-10-26 19:39:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50813 states. [2018-10-26 19:39:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50813 states to 50813 states and 53630 transitions. [2018-10-26 19:39:39,550 INFO L78 Accepts]: Start accepts. Automaton has 50813 states and 53630 transitions. Word has length 548 [2018-10-26 19:39:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:39:39,551 INFO L481 AbstractCegarLoop]: Abstraction has 50813 states and 53630 transitions. [2018-10-26 19:39:39,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:39:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 50813 states and 53630 transitions. [2018-10-26 19:39:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-10-26 19:39:39,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:39,567 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:39:39,568 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:39,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:39,568 INFO L82 PathProgramCache]: Analyzing trace with hash -507630664, now seen corresponding path program 1 times [2018-10-26 19:39:39,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:39,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:39,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:39,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:39,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-26 19:39:40,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:39:40,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:39:40,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:39:40,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:39:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:39:40,056 INFO L87 Difference]: Start difference. First operand 50813 states and 53630 transitions. Second operand 4 states. [2018-10-26 19:39:45,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:39:45,666 INFO L93 Difference]: Finished difference Result 117844 states and 124335 transitions. [2018-10-26 19:39:45,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:39:45,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 576 [2018-10-26 19:39:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:39:45,731 INFO L225 Difference]: With dead ends: 117844 [2018-10-26 19:39:45,731 INFO L226 Difference]: Without dead ends: 67459 [2018-10-26 19:39:45,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:39:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67459 states. [2018-10-26 19:39:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67459 to 61038. [2018-10-26 19:39:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61038 states. [2018-10-26 19:39:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61038 states to 61038 states and 64064 transitions. [2018-10-26 19:39:46,346 INFO L78 Accepts]: Start accepts. Automaton has 61038 states and 64064 transitions. Word has length 576 [2018-10-26 19:39:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:39:46,346 INFO L481 AbstractCegarLoop]: Abstraction has 61038 states and 64064 transitions. [2018-10-26 19:39:46,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:39:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 61038 states and 64064 transitions. [2018-10-26 19:39:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2018-10-26 19:39:46,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:46,378 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:39:46,378 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:46,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:46,379 INFO L82 PathProgramCache]: Analyzing trace with hash -676241326, now seen corresponding path program 1 times [2018-10-26 19:39:46,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:46,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:46,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:46,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:46,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 404 proven. 248 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-26 19:39:48,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:39:48,402 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 [2018-10-26 19:39:48,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:48,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:39:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 404 proven. 248 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-26 19:39:54,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:39:54,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-26 19:39:54,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:39:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:39:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:39:54,821 INFO L87 Difference]: Start difference. First operand 61038 states and 64064 transitions. Second operand 9 states. [2018-10-26 19:40:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:44,078 INFO L93 Difference]: Finished difference Result 143017 states and 150142 transitions. [2018-10-26 19:40:44,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:40:44,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 793 [2018-10-26 19:40:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:44,162 INFO L225 Difference]: With dead ends: 143017 [2018-10-26 19:40:44,162 INFO L226 Difference]: Without dead ends: 85394 [2018-10-26 19:40:44,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 790 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:40:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85394 states. [2018-10-26 19:40:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85394 to 66580. [2018-10-26 19:40:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66580 states. [2018-10-26 19:40:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66580 states to 66580 states and 69434 transitions. [2018-10-26 19:40:44,888 INFO L78 Accepts]: Start accepts. Automaton has 66580 states and 69434 transitions. Word has length 793 [2018-10-26 19:40:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:44,888 INFO L481 AbstractCegarLoop]: Abstraction has 66580 states and 69434 transitions. [2018-10-26 19:40:44,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:40:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 66580 states and 69434 transitions. [2018-10-26 19:40:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2018-10-26 19:40:44,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:44,911 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:44,911 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:44,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:44,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1536480157, now seen corresponding path program 1 times [2018-10-26 19:40:44,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:44,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:44,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:44,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:44,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-10-26 19:40:45,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:45,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:40:45,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:40:45,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:40:45,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:40:45,900 INFO L87 Difference]: Start difference. First operand 66580 states and 69434 transitions. Second operand 3 states. [2018-10-26 19:40:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:51,150 INFO L93 Difference]: Finished difference Result 134006 states and 139788 transitions. [2018-10-26 19:40:51,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:40:51,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 810 [2018-10-26 19:40:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:51,216 INFO L225 Difference]: With dead ends: 134006 [2018-10-26 19:40:51,216 INFO L226 Difference]: Without dead ends: 68280 [2018-10-26 19:40:51,251 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 [2018-10-26 19:40:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68280 states. [2018-10-26 19:40:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68280 to 65715. [2018-10-26 19:40:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65715 states. [2018-10-26 19:40:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65715 states to 65715 states and 68357 transitions. [2018-10-26 19:40:51,860 INFO L78 Accepts]: Start accepts. Automaton has 65715 states and 68357 transitions. Word has length 810 [2018-10-26 19:40:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:51,861 INFO L481 AbstractCegarLoop]: Abstraction has 65715 states and 68357 transitions. [2018-10-26 19:40:51,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:40:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 65715 states and 68357 transitions. [2018-10-26 19:40:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2018-10-26 19:40:51,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:51,888 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:51,888 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:51,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:51,889 INFO L82 PathProgramCache]: Analyzing trace with hash 394402692, now seen corresponding path program 1 times [2018-10-26 19:40:51,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:51,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:51,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:51,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:51,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 446 proven. 9 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2018-10-26 19:40:53,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:40:53,375 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 [2018-10-26 19:40:53,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:53,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:40:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 446 proven. 9 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2018-10-26 19:40:54,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:40:54,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-26 19:40:54,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:54,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:54,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:54,332 INFO L87 Difference]: Start difference. First operand 65715 states and 68357 transitions. Second operand 4 states. [2018-10-26 19:40:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:59,883 INFO L93 Difference]: Finished difference Result 131855 states and 137214 transitions. [2018-10-26 19:40:59,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:40:59,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 841 [2018-10-26 19:40:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:59,948 INFO L225 Difference]: With dead ends: 131855 [2018-10-26 19:40:59,948 INFO L226 Difference]: Without dead ends: 71261 [2018-10-26 19:40:59,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 842 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71261 states. [2018-10-26 19:41:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71261 to 62728. [2018-10-26 19:41:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62728 states. [2018-10-26 19:41:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62728 states to 62728 states and 65249 transitions. [2018-10-26 19:41:00,551 INFO L78 Accepts]: Start accepts. Automaton has 62728 states and 65249 transitions. Word has length 841 [2018-10-26 19:41:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:00,552 INFO L481 AbstractCegarLoop]: Abstraction has 62728 states and 65249 transitions. [2018-10-26 19:41:00,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:41:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 62728 states and 65249 transitions. [2018-10-26 19:41:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2018-10-26 19:41:00,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:00,596 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2018-10-26 19:41:00,596 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:00,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:00,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1941165586, now seen corresponding path program 1 times [2018-10-26 19:41:00,597 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:00,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:00,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:00,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:00,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 1204 proven. 1 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2018-10-26 19:41:02,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:41:02,546 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 [2018-10-26 19:41:02,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:02,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:41:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 1204 proven. 0 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2018-10-26 19:41:03,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:41:03,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:41:03,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:41:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:41:03,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:41:03,388 INFO L87 Difference]: Start difference. First operand 62728 states and 65249 transitions. Second operand 5 states. Received shutdown request... [2018-10-26 19:41:04,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:41:04,462 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:41:04,468 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:41:04,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:41:04 BoogieIcfgContainer [2018-10-26 19:41:04,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:41:04,469 INFO L168 Benchmark]: Toolchain (without parser) took 239246.38 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 717.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:41:04,471 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:41:04,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1500.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:41:04,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 555.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:41:04,473 INFO L168 Benchmark]: Boogie Preprocessor took 389.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:41:04,474 INFO L168 Benchmark]: RCFGBuilder took 10238.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 474.3 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:41:04,474 INFO L168 Benchmark]: TraceAbstraction took 226558.00 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 200.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:41:04,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1500.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 555.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 389.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10238.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 474.3 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226558.00 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 200.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 38]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 38). Cancelled while BasicCegarLoop was constructing difference of abstraction (62728states) and FLOYD_HOARE automaton (currently 3 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (643 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 226.4s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 172.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3993 SDtfs, 19756 SDslu, 2175 SDs, 0 SdLazy, 47754 SolverSat, 7557 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 152.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3941 GetRequests, 3883 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69214occurred in iteration=7, 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: 7.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 86423 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 10950 NumberOfCodeBlocks, 10950 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 10928 ConstructedInterpolants, 648 QuantifiedInterpolants, 41892359 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4818 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 22 InterpolantComputations, 12 PerfectInterpolantSequences, 11694/12767 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown