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/Problem12_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:09:02,041 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:09:02,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:09:02,055 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:09:02,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:09:02,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:09:02,058 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:09:02,060 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:09:02,062 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:09:02,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:09:02,064 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:09:02,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:09:02,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:09:02,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:09:02,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:09:02,069 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:09:02,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:09:02,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:09:02,075 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:09:02,076 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:09:02,078 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:09:02,079 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:09:02,082 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:09:02,082 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:09:02,082 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:09:02,084 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:09:02,085 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:09:02,086 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:09:02,086 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:09:02,088 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:09:02,088 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:09:02,089 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:09:02,089 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:09:02,089 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:09:02,091 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:09:02,091 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:09:02,092 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 19:09:02,108 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:09:02,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:09:02,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:09:02,109 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:09:02,110 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:09:02,110 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:09:02,110 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:09:02,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:09:02,111 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:09:02,111 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:09:02,112 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:09:02,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:09:02,112 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:09:02,112 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:09:02,113 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:09:02,113 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:09:02,113 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:09:02,113 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:09:02,114 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:09:02,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:09:02,114 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:09:02,114 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:09:02,115 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:09:02,115 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:09:02,115 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:09:02,115 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:09:02,115 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:09:02,116 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:09:02,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:09:02,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:09:02,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:09:02,182 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:09:02,182 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:09:02,183 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38_false-unreach-call.c [2018-10-26 19:09:02,251 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10d45acef/61e85d38cb4f424cbedf4b803e22a919/FLAG2fdcc0dea [2018-10-26 19:09:03,088 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:09:03,089 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label38_false-unreach-call.c [2018-10-26 19:09:03,127 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10d45acef/61e85d38cb4f424cbedf4b803e22a919/FLAG2fdcc0dea [2018-10-26 19:09:03,147 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10d45acef/61e85d38cb4f424cbedf4b803e22a919 [2018-10-26 19:09:03,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:09:03,160 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:09:03,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:03,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:09:03,166 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:09:03,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:03,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:03, skipping insertion in model container [2018-10-26 19:09:03,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:03" (1/1) ... [2018-10-26 19:09:03,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:09:03,320 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:09:04,616 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:04,622 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:09:05,240 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:05,274 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:09:05,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05 WrapperNode [2018-10-26 19:09:05,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:05,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:05,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:09:05,276 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:09:05,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:05,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:05,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:05,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:09:05,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:09:05,904 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:09:05,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:05,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:05,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:05,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:06,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:06,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:06,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (1/1) ... [2018-10-26 19:09:06,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:09:06,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:09:06,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:09:06,231 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:09:06,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (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 19:09:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:09:06,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:09:06,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:09:14,983 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:09:14,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:09:14 BoogieIcfgContainer [2018-10-26 19:09:14,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:09:14,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:09:14,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:09:14,991 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:09:14,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:09:03" (1/3) ... [2018-10-26 19:09:14,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:09:14, skipping insertion in model container [2018-10-26 19:09:14,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:05" (2/3) ... [2018-10-26 19:09:14,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:09:14, skipping insertion in model container [2018-10-26 19:09:14,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:09:14" (3/3) ... [2018-10-26 19:09:14,995 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label38_false-unreach-call.c [2018-10-26 19:09:15,007 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:09:15,021 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:09:15,039 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:09:15,101 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:09:15,102 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:09:15,102 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:09:15,102 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:09:15,102 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:09:15,103 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:09:15,103 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:09:15,103 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:09:15,103 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:09:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:09:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 19:09:15,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:15,151 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:15,155 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:15,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1473047758, now seen corresponding path program 1 times [2018-10-26 19:09:15,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:15,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:15,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:15,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:15,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:15,574 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 19:09:15,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:15,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:09:15,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:15,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:15,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:15,602 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:09:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:29,046 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:09:29,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:29,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-26 19:09:29,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:29,090 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:09:29,090 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:09:29,097 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 19:09:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:09:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:09:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:09:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-26 19:09:29,282 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 25 [2018-10-26 19:09:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:29,282 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-26 19:09:29,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-26 19:09:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-26 19:09:29,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:29,288 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:29,289 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:29,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:29,291 INFO L82 PathProgramCache]: Analyzing trace with hash -510627501, now seen corresponding path program 1 times [2018-10-26 19:09:29,291 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:29,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:29,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:29,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:29,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:29,831 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-26 19:09:30,062 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-26 19:09:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:30,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:30,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:09:30,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:09:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:09:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:09:30,302 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-26 19:09:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:49,284 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-26 19:09:49,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:09:49,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2018-10-26 19:09:49,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:49,323 INFO L225 Difference]: With dead ends: 9904 [2018-10-26 19:09:49,323 INFO L226 Difference]: Without dead ends: 7586 [2018-10-26 19:09:49,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:09:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-26 19:09:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-26 19:09:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-26 19:09:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-26 19:09:49,463 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 91 [2018-10-26 19:09:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:49,464 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-26 19:09:49,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:09:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-26 19:09:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-26 19:09:49,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:49,468 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:49,468 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:49,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1345815394, now seen corresponding path program 1 times [2018-10-26 19:09:49,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:49,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:49,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:09:49,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:49,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:09:49,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:49,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:49,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:49,604 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 4 states. [2018-10-26 19:09:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:59,150 INFO L93 Difference]: Finished difference Result 21182 states and 34370 transitions. [2018-10-26 19:09:59,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:59,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2018-10-26 19:09:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:59,219 INFO L225 Difference]: With dead ends: 21182 [2018-10-26 19:09:59,219 INFO L226 Difference]: Without dead ends: 15104 [2018-10-26 19:09:59,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 19:09:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15104 states. [2018-10-26 19:09:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15104 to 15104. [2018-10-26 19:09:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15104 states. [2018-10-26 19:09:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 21564 transitions. [2018-10-26 19:09:59,501 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 21564 transitions. Word has length 97 [2018-10-26 19:09:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:59,502 INFO L481 AbstractCegarLoop]: Abstraction has 15104 states and 21564 transitions. [2018-10-26 19:09:59,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 21564 transitions. [2018-10-26 19:09:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-26 19:09:59,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:59,515 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:59,516 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:59,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash 707408411, now seen corresponding path program 1 times [2018-10-26 19:09:59,516 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:59,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:59,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:59,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:59,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:00,063 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-26 19:10:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:00,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:00,172 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 19:10:00,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:00,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:00,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:10:00,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-26 19:10:00,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:10:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:10:00,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:10:00,533 INFO L87 Difference]: Start difference. First operand 15104 states and 21564 transitions. Second operand 8 states. [2018-10-26 19:10:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:23,445 INFO L93 Difference]: Finished difference Result 45247 states and 63267 transitions. [2018-10-26 19:10:23,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:10:23,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2018-10-26 19:10:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:23,512 INFO L225 Difference]: With dead ends: 45247 [2018-10-26 19:10:23,512 INFO L226 Difference]: Without dead ends: 30145 [2018-10-26 19:10:23,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:10:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30145 states. [2018-10-26 19:10:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30145 to 28640. [2018-10-26 19:10:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28640 states. [2018-10-26 19:10:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28640 states to 28640 states and 37080 transitions. [2018-10-26 19:10:24,020 INFO L78 Accepts]: Start accepts. Automaton has 28640 states and 37080 transitions. Word has length 171 [2018-10-26 19:10:24,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:24,021 INFO L481 AbstractCegarLoop]: Abstraction has 28640 states and 37080 transitions. [2018-10-26 19:10:24,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:10:24,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28640 states and 37080 transitions. [2018-10-26 19:10:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-26 19:10:24,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:24,039 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:10:24,040 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:24,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:24,040 INFO L82 PathProgramCache]: Analyzing trace with hash -630267684, now seen corresponding path program 1 times [2018-10-26 19:10:24,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:24,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:24,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:24,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:24,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-26 19:10:24,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:24,727 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 19:10:24,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:24,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-26 19:10:25,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:10:25,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:10:25,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:10:25,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:10:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:10:25,005 INFO L87 Difference]: Start difference. First operand 28640 states and 37080 transitions. Second operand 5 states. [2018-10-26 19:10:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:36,435 INFO L93 Difference]: Finished difference Result 64798 states and 84680 transitions. [2018-10-26 19:10:36,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:10:36,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2018-10-26 19:10:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:36,509 INFO L225 Difference]: With dead ends: 64798 [2018-10-26 19:10:36,509 INFO L226 Difference]: Without dead ends: 36160 [2018-10-26 19:10:36,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 361 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 19:10:36,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36160 states. [2018-10-26 19:10:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36160 to 36160. [2018-10-26 19:10:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36160 states. [2018-10-26 19:10:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36160 states to 36160 states and 43591 transitions. [2018-10-26 19:10:37,027 INFO L78 Accepts]: Start accepts. Automaton has 36160 states and 43591 transitions. Word has length 362 [2018-10-26 19:10:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:37,028 INFO L481 AbstractCegarLoop]: Abstraction has 36160 states and 43591 transitions. [2018-10-26 19:10:37,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:10:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 36160 states and 43591 transitions. [2018-10-26 19:10:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-26 19:10:37,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:37,048 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:37,048 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:37,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1587040806, now seen corresponding path program 1 times [2018-10-26 19:10:37,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:37,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:37,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:37,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:37,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:37,544 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 19:10:37,850 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-26 19:10:38,055 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-26 19:10:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 217 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-26 19:10:38,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:38,228 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 19:10:38,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:38,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-26 19:10:38,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:10:38,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:10:38,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:10:38,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:10:38,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:10:38,860 INFO L87 Difference]: Start difference. First operand 36160 states and 43591 transitions. Second operand 7 states. [2018-10-26 19:10:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:57,094 INFO L93 Difference]: Finished difference Result 146037 states and 174962 transitions. [2018-10-26 19:10:57,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:10:57,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2018-10-26 19:10:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:57,182 INFO L225 Difference]: With dead ends: 146037 [2018-10-26 19:10:57,183 INFO L226 Difference]: Without dead ends: 80497 [2018-10-26 19:10:57,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 376 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:10:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80497 states. [2018-10-26 19:10:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80497 to 58684. [2018-10-26 19:10:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58684 states. [2018-10-26 19:10:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58684 states to 58684 states and 64746 transitions. [2018-10-26 19:10:58,038 INFO L78 Accepts]: Start accepts. Automaton has 58684 states and 64746 transitions. Word has length 375 [2018-10-26 19:10:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:58,038 INFO L481 AbstractCegarLoop]: Abstraction has 58684 states and 64746 transitions. [2018-10-26 19:10:58,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:10:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 58684 states and 64746 transitions. [2018-10-26 19:10:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-26 19:10:58,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:58,058 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:58,059 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:58,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash 751558680, now seen corresponding path program 1 times [2018-10-26 19:10:58,059 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:58,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:58,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:58,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:58,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-26 19:10:58,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:58,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:10:58,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:10:58,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:10:58,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:10:58,559 INFO L87 Difference]: Start difference. First operand 58684 states and 64746 transitions. Second operand 5 states. [2018-10-26 19:11:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:09,888 INFO L93 Difference]: Finished difference Result 172277 states and 190503 transitions. [2018-10-26 19:11:09,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:11:09,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2018-10-26 19:11:09,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:10,061 INFO L225 Difference]: With dead ends: 172277 [2018-10-26 19:11:10,062 INFO L226 Difference]: Without dead ends: 113595 [2018-10-26 19:11:10,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:11:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113595 states. [2018-10-26 19:11:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113595 to 93291. [2018-10-26 19:11:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93291 states. [2018-10-26 19:11:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93291 states to 93291 states and 100810 transitions. [2018-10-26 19:11:11,348 INFO L78 Accepts]: Start accepts. Automaton has 93291 states and 100810 transitions. Word has length 442 [2018-10-26 19:11:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:11,349 INFO L481 AbstractCegarLoop]: Abstraction has 93291 states and 100810 transitions. [2018-10-26 19:11:11,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:11:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 93291 states and 100810 transitions. [2018-10-26 19:11:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-10-26 19:11:11,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:11,489 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:11,489 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:11,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:11,490 INFO L82 PathProgramCache]: Analyzing trace with hash 954687590, now seen corresponding path program 1 times [2018-10-26 19:11:11,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:11,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:11,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:11,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:11,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:12,039 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 19:11:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 533 proven. 5 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-26 19:11:13,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:11:13,244 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 19:11:13,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:13,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:11:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 523 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-26 19:11:14,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:11:14,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:11:14,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:11:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:11:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:11:14,198 INFO L87 Difference]: Start difference. First operand 93291 states and 100810 transitions. Second operand 5 states. [2018-10-26 19:11:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:28,957 INFO L93 Difference]: Finished difference Result 233942 states and 253503 transitions. [2018-10-26 19:11:28,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:11:28,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 981 [2018-10-26 19:11:28,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:29,128 INFO L225 Difference]: With dead ends: 233942 [2018-10-26 19:11:29,129 INFO L226 Difference]: Without dead ends: 140653 [2018-10-26 19:11:29,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 983 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:11:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140653 states. [2018-10-26 19:11:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140653 to 138397. [2018-10-26 19:11:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138397 states. [2018-10-26 19:11:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138397 states to 138397 states and 147214 transitions. [2018-10-26 19:11:30,501 INFO L78 Accepts]: Start accepts. Automaton has 138397 states and 147214 transitions. Word has length 981 [2018-10-26 19:11:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:30,502 INFO L481 AbstractCegarLoop]: Abstraction has 138397 states and 147214 transitions. [2018-10-26 19:11:30,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:11:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 138397 states and 147214 transitions. [2018-10-26 19:11:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2018-10-26 19:11:31,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:31,182 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:31,182 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:31,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash -245116372, now seen corresponding path program 1 times [2018-10-26 19:11:31,184 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:31,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:31,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:31,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:31,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 69 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-26 19:11:33,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:11:33,552 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 19:11:33,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:33,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:11:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 91 proven. 332 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-26 19:11:35,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:11:35,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:11:35,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:11:35,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:11:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:11:35,096 INFO L87 Difference]: Start difference. First operand 138397 states and 147214 transitions. Second operand 7 states. [2018-10-26 19:11:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:51,747 INFO L93 Difference]: Finished difference Result 388848 states and 413311 transitions. [2018-10-26 19:11:51,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:11:51,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1009 [2018-10-26 19:11:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:52,053 INFO L225 Difference]: With dead ends: 388848 [2018-10-26 19:11:52,054 INFO L226 Difference]: Without dead ends: 250453 [2018-10-26 19:11:52,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 1007 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:11:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250453 states. [2018-10-26 19:11:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250453 to 188030. [2018-10-26 19:11:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188030 states. [2018-10-26 19:11:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188030 states to 188030 states and 200329 transitions. [2018-10-26 19:11:54,686 INFO L78 Accepts]: Start accepts. Automaton has 188030 states and 200329 transitions. Word has length 1009 [2018-10-26 19:11:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:54,687 INFO L481 AbstractCegarLoop]: Abstraction has 188030 states and 200329 transitions. [2018-10-26 19:11:54,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:11:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 188030 states and 200329 transitions. [2018-10-26 19:11:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-10-26 19:11:54,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:54,774 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:54,775 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:54,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:54,775 INFO L82 PathProgramCache]: Analyzing trace with hash -922072515, now seen corresponding path program 1 times [2018-10-26 19:11:54,775 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:54,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:54,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:54,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:54,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 681 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-26 19:11:56,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:56,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:11:56,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:11:56,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:11:56,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:11:56,353 INFO L87 Difference]: Start difference. First operand 188030 states and 200329 transitions. Second operand 3 states. [2018-10-26 19:12:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:01,832 INFO L93 Difference]: Finished difference Result 391846 states and 417805 transitions. [2018-10-26 19:12:01,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:12:01,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1027 [2018-10-26 19:12:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:02,089 INFO L225 Difference]: With dead ends: 391846 [2018-10-26 19:12:02,089 INFO L226 Difference]: Without dead ends: 203818 [2018-10-26 19:12:02,192 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 19:12:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203818 states. [2018-10-26 19:12:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203818 to 200810. [2018-10-26 19:12:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200810 states. [2018-10-26 19:12:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200810 states to 200810 states and 213141 transitions. [2018-10-26 19:12:05,074 INFO L78 Accepts]: Start accepts. Automaton has 200810 states and 213141 transitions. Word has length 1027 [2018-10-26 19:12:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:05,075 INFO L481 AbstractCegarLoop]: Abstraction has 200810 states and 213141 transitions. [2018-10-26 19:12:05,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:12:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 200810 states and 213141 transitions. [2018-10-26 19:12:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-10-26 19:12:05,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:05,188 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:05,188 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:05,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1642438618, now seen corresponding path program 1 times [2018-10-26 19:12:05,189 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:05,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:05,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:05,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:05,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-26 19:12:07,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:07,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:07,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:12:07,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:12:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:07,825 INFO L87 Difference]: Start difference. First operand 200810 states and 213141 transitions. Second operand 4 states. [2018-10-26 19:12:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:19,073 INFO L93 Difference]: Finished difference Result 403121 states and 427826 transitions. [2018-10-26 19:12:19,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:12:19,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1036 [2018-10-26 19:12:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:19,292 INFO L225 Difference]: With dead ends: 403121 [2018-10-26 19:12:19,292 INFO L226 Difference]: Without dead ends: 191771 [2018-10-26 19:12:19,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191771 states. [2018-10-26 19:12:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191771 to 181994. [2018-10-26 19:12:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181994 states. [2018-10-26 19:12:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181994 states to 181994 states and 189686 transitions. [2018-10-26 19:12:22,288 INFO L78 Accepts]: Start accepts. Automaton has 181994 states and 189686 transitions. Word has length 1036 [2018-10-26 19:12:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:22,289 INFO L481 AbstractCegarLoop]: Abstraction has 181994 states and 189686 transitions. [2018-10-26 19:12:22,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 181994 states and 189686 transitions. [2018-10-26 19:12:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2018-10-26 19:12:22,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:22,388 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:22,388 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:22,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:22,389 INFO L82 PathProgramCache]: Analyzing trace with hash 149901139, now seen corresponding path program 1 times [2018-10-26 19:12:22,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:22,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:22,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:22,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:22,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-10-26 19:12:25,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:25,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:25,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:12:25,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:12:25,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:25,035 INFO L87 Difference]: Start difference. First operand 181994 states and 189686 transitions. Second operand 4 states. [2018-10-26 19:12:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:33,174 INFO L93 Difference]: Finished difference Result 383538 states and 399964 transitions. [2018-10-26 19:12:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:12:33,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1114 [2018-10-26 19:12:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:33,434 INFO L225 Difference]: With dead ends: 383538 [2018-10-26 19:12:33,434 INFO L226 Difference]: Without dead ends: 206810 [2018-10-26 19:12:33,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:12:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206810 states. [2018-10-26 19:12:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206810 to 184250. [2018-10-26 19:12:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184250 states. [2018-10-26 19:12:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184250 states to 184250 states and 189470 transitions. [2018-10-26 19:12:40,225 INFO L78 Accepts]: Start accepts. Automaton has 184250 states and 189470 transitions. Word has length 1114 [2018-10-26 19:12:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:40,226 INFO L481 AbstractCegarLoop]: Abstraction has 184250 states and 189470 transitions. [2018-10-26 19:12:40,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 184250 states and 189470 transitions. [2018-10-26 19:12:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2018-10-26 19:12:40,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:40,314 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:40,314 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:40,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:40,315 INFO L82 PathProgramCache]: Analyzing trace with hash -291427069, now seen corresponding path program 1 times [2018-10-26 19:12:40,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:40,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:40,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:40,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:40,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-26 19:12:45,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:45,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 19:12:45,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:12:45,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:12:45,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:12:45,768 INFO L87 Difference]: Start difference. First operand 184250 states and 189470 transitions. Second operand 10 states. Received shutdown request... [2018-10-26 19:12:47,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 19:12:47,640 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:12:47,645 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:12:47,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:12:47 BoogieIcfgContainer [2018-10-26 19:12:47,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:12:47,646 INFO L168 Benchmark]: Toolchain (without parser) took 224487.21 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 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 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 19:12:47,648 INFO L168 Benchmark]: CDTParser took 0.24 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 19:12:47,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2113.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:47,651 INFO L168 Benchmark]: Boogie Procedure Inliner took 627.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:47,652 INFO L168 Benchmark]: Boogie Preprocessor took 326.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:47,653 INFO L168 Benchmark]: RCFGBuilder took 8753.87 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 214.4 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -152.6 MB). Peak memory consumption was 624.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:12:47,654 INFO L168 Benchmark]: TraceAbstraction took 212657.83 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -763.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 19:12:47,659 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2113.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 627.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 326.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8753.87 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 214.4 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -152.6 MB). Peak memory consumption was 624.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212657.83 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -763.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 84). Cancelled while BasicCegarLoop was constructing difference of abstraction (184250states) and FLOYD_HOARE automaton (currently 2 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (698 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 166.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5599 SDtfs, 38974 SDslu, 1271 SDs, 0 SdLazy, 84825 SolverSat, 18208 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 132.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2985 GetRequests, 2912 SyntacticMatches, 16 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200810occurred in iteration=10, 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: 19.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 145152 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 10774 NumberOfCodeBlocks, 10774 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 10756 ConstructedInterpolants, 0 QuantifiedInterpolants, 35462956 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3498 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 7224/8013 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown