java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:16:15,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:16:15,197 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:16:15,213 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:16:15,213 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:16:15,214 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:16:15,218 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:16:15,221 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:16:15,223 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:16:15,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:16:15,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:16:15,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:16:15,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:16:15,233 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:16:15,243 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:16:15,244 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:16:15,245 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:16:15,247 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:16:15,248 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:16:15,250 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:16:15,251 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:16:15,252 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:16:15,255 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:16:15,255 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:16:15,255 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:16:15,256 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:16:15,257 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:16:15,258 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:16:15,258 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:16:15,259 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:16:15,260 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:16:15,260 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:16:15,263 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:16:15,277 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:16:15,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:16:15,278 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:16:15,279 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:16:15,279 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:16:15,279 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:16:15,280 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:16:15,280 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:16:15,280 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:16:15,280 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:16:15,281 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:16:15,281 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:16:15,281 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:16:15,281 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:16:15,281 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:16:15,282 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:16:15,282 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:16:15,282 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:16:15,282 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:16:15,283 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:16:15,283 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:16:15,283 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:16:15,283 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:16:15,283 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:16:15,284 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:16:15,284 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:16:15,284 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:16:15,284 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:16:15,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:16:15,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:16:15,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:16:15,353 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:16:15,354 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:16:15,354 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-11-06 21:16:15,421 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1691b266/f13e302466a7490fb50425906adbcf6e/FLAGdb1727bbf [2018-11-06 21:16:16,226 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:16:16,227 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-11-06 21:16:16,268 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1691b266/f13e302466a7490fb50425906adbcf6e/FLAGdb1727bbf [2018-11-06 21:16:16,292 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1691b266/f13e302466a7490fb50425906adbcf6e [2018-11-06 21:16:16,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:16:16,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:16:16,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:16:16,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:16:16,315 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:16:16,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:16" (1/1) ... [2018-11-06 21:16:16,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c193a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:16, skipping insertion in model container [2018-11-06 21:16:16,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:16" (1/1) ... [2018-11-06 21:16:16,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:16:16,527 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:16:18,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:16:18,067 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:16:18,924 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:16:18,962 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:16:18,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18 WrapperNode [2018-11-06 21:16:18,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:16:18,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:16:18,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:16:18,966 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:16:18,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:19,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:19,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:16:19,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:16:19,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:16:19,799 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:16:19,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:19,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:19,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:19,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:20,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:20,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:20,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... [2018-11-06 21:16:20,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:16:20,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:16:20,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:16:20,505 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:16:20,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:16:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:16:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:16:20,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:16:32,952 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:16:32,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:32 BoogieIcfgContainer [2018-11-06 21:16:32,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:16:32,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:16:32,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:16:32,958 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:16:32,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:16" (1/3) ... [2018-11-06 21:16:32,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f71edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:32, skipping insertion in model container [2018-11-06 21:16:32,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:18" (2/3) ... [2018-11-06 21:16:32,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f71edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:32, skipping insertion in model container [2018-11-06 21:16:32,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:32" (3/3) ... [2018-11-06 21:16:32,962 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label08_true-unreach-call.c [2018-11-06 21:16:32,972 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:16:32,983 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:16:33,002 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:16:33,052 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:16:33,052 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:16:33,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:16:33,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:16:33,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:16:33,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:16:33,053 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:16:33,053 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:16:33,053 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:16:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 21:16:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-06 21:16:33,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:33,107 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:16:33,109 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:33,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:33,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1316472986, now seen corresponding path program 1 times [2018-11-06 21:16:33,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:33,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:33,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:33,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:33,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:33,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:33,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:16:33,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:16:33,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:16:33,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:33,737 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-11-06 21:16:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:49,159 INFO L93 Difference]: Finished difference Result 3878 states and 7286 transitions. [2018-11-06 21:16:49,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:16:49,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-06 21:16:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:49,206 INFO L225 Difference]: With dead ends: 3878 [2018-11-06 21:16:49,206 INFO L226 Difference]: Without dead ends: 2772 [2018-11-06 21:16:49,214 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2018-11-06 21:16:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2741. [2018-11-06 21:16:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2018-11-06 21:16:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4465 transitions. [2018-11-06 21:16:49,379 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4465 transitions. Word has length 51 [2018-11-06 21:16:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:49,380 INFO L480 AbstractCegarLoop]: Abstraction has 2741 states and 4465 transitions. [2018-11-06 21:16:49,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:16:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4465 transitions. [2018-11-06 21:16:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-06 21:16:49,388 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:49,388 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:16:49,389 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:49,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:49,389 INFO L82 PathProgramCache]: Analyzing trace with hash -422253107, now seen corresponding path program 1 times [2018-11-06 21:16:49,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:49,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:49,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:49,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:49,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:49,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:49,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:16:49,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:16:49,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:16:49,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:49,862 INFO L87 Difference]: Start difference. First operand 2741 states and 4465 transitions. Second operand 5 states. [2018-11-06 21:17:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:06,270 INFO L93 Difference]: Finished difference Result 7901 states and 11939 transitions. [2018-11-06 21:17:06,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:17:06,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-06 21:17:06,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:06,297 INFO L225 Difference]: With dead ends: 7901 [2018-11-06 21:17:06,297 INFO L226 Difference]: Without dead ends: 5162 [2018-11-06 21:17:06,302 INFO L604 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 [2018-11-06 21:17:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2018-11-06 21:17:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 4328. [2018-11-06 21:17:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4328 states. [2018-11-06 21:17:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 6258 transitions. [2018-11-06 21:17:06,386 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 6258 transitions. Word has length 141 [2018-11-06 21:17:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:06,387 INFO L480 AbstractCegarLoop]: Abstraction has 4328 states and 6258 transitions. [2018-11-06 21:17:06,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:17:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 6258 transitions. [2018-11-06 21:17:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-06 21:17:06,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:06,392 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:17:06,392 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:06,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:06,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1408146749, now seen corresponding path program 1 times [2018-11-06 21:17:06,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:06,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:06,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:06,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:06,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:17:06,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:06,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:17:06,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:06,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:06,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:06,606 INFO L87 Difference]: Start difference. First operand 4328 states and 6258 transitions. Second operand 4 states. [2018-11-06 21:17:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:18,878 INFO L93 Difference]: Finished difference Result 15813 states and 23233 transitions. [2018-11-06 21:17:18,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:18,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-11-06 21:17:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:18,929 INFO L225 Difference]: With dead ends: 15813 [2018-11-06 21:17:18,929 INFO L226 Difference]: Without dead ends: 11487 [2018-11-06 21:17:18,937 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11487 states. [2018-11-06 21:17:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11487 to 11481. [2018-11-06 21:17:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11481 states. [2018-11-06 21:17:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 15626 transitions. [2018-11-06 21:17:19,138 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 15626 transitions. Word has length 152 [2018-11-06 21:17:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:19,139 INFO L480 AbstractCegarLoop]: Abstraction has 11481 states and 15626 transitions. [2018-11-06 21:17:19,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 15626 transitions. [2018-11-06 21:17:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-06 21:17:19,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:19,144 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:17:19,144 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:19,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1164637680, now seen corresponding path program 1 times [2018-11-06 21:17:19,145 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:19,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:19,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:19,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:19,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:19,556 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:17:19,998 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:17:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 119 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-06 21:17:20,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:20,275 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:17:20,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:20,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-11-06 21:17:20,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:20,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-06 21:17:20,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:17:20,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:17:20,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:17:20,620 INFO L87 Difference]: Start difference. First operand 11481 states and 15626 transitions. Second operand 6 states. [2018-11-06 21:17:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:37,515 INFO L93 Difference]: Finished difference Result 57631 states and 78123 transitions. [2018-11-06 21:17:37,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:17:37,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2018-11-06 21:17:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:37,652 INFO L225 Difference]: With dead ends: 57631 [2018-11-06 21:17:37,652 INFO L226 Difference]: Without dead ends: 46152 [2018-11-06 21:17:37,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:17:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46152 states. [2018-11-06 21:17:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46152 to 46150. [2018-11-06 21:17:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46150 states. [2018-11-06 21:17:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46150 states to 46150 states and 54728 transitions. [2018-11-06 21:17:38,508 INFO L78 Accepts]: Start accepts. Automaton has 46150 states and 54728 transitions. Word has length 214 [2018-11-06 21:17:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:38,509 INFO L480 AbstractCegarLoop]: Abstraction has 46150 states and 54728 transitions. [2018-11-06 21:17:38,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:17:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 46150 states and 54728 transitions. [2018-11-06 21:17:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-06 21:17:38,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:38,527 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 21:17:38,528 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:38,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1086486529, now seen corresponding path program 1 times [2018-11-06 21:17:38,528 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:38,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:38,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:38,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:38,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 528 proven. 9 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-11-06 21:17:39,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:39,464 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:17:39,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:39,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-11-06 21:17:39,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:39,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:17:39,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:17:39,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:17:39,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:39,863 INFO L87 Difference]: Start difference. First operand 46150 states and 54728 transitions. Second operand 5 states. [2018-11-06 21:17:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:51,691 INFO L93 Difference]: Finished difference Result 111229 states and 135342 transitions. [2018-11-06 21:17:51,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:17:51,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2018-11-06 21:17:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:51,826 INFO L225 Difference]: With dead ends: 111229 [2018-11-06 21:17:51,826 INFO L226 Difference]: Without dead ends: 65869 [2018-11-06 21:17:51,871 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:51,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65869 states. [2018-11-06 21:17:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65869 to 65846. [2018-11-06 21:17:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65846 states. [2018-11-06 21:17:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65846 states to 65846 states and 76512 transitions. [2018-11-06 21:17:52,656 INFO L78 Accepts]: Start accepts. Automaton has 65846 states and 76512 transitions. Word has length 411 [2018-11-06 21:17:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:52,656 INFO L480 AbstractCegarLoop]: Abstraction has 65846 states and 76512 transitions. [2018-11-06 21:17:52,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:17:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 65846 states and 76512 transitions. [2018-11-06 21:17:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-11-06 21:17:52,677 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:52,677 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 21:17:52,678 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:52,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:52,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2100036450, now seen corresponding path program 1 times [2018-11-06 21:17:52,678 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:52,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:52,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:52,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:52,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:53,283 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:17:54,235 WARN L179 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:17:54,747 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 8 [2018-11-06 21:17:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 384 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-11-06 21:17:55,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:17:55,181 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:17:55,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:55,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:17:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-11-06 21:17:55,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:17:55,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 21:17:55,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:17:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:17:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:17:55,577 INFO L87 Difference]: Start difference. First operand 65846 states and 76512 transitions. Second operand 8 states. [2018-11-06 21:18:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:16,454 INFO L93 Difference]: Finished difference Result 171892 states and 199327 transitions. [2018-11-06 21:18:16,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:18:16,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 414 [2018-11-06 21:18:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:16,686 INFO L225 Difference]: With dead ends: 171892 [2018-11-06 21:18:16,686 INFO L226 Difference]: Without dead ends: 106836 [2018-11-06 21:18:16,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 418 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:18:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106836 states. [2018-11-06 21:18:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106836 to 99723. [2018-11-06 21:18:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99723 states. [2018-11-06 21:18:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99723 states to 99723 states and 112064 transitions. [2018-11-06 21:18:17,759 INFO L78 Accepts]: Start accepts. Automaton has 99723 states and 112064 transitions. Word has length 414 [2018-11-06 21:18:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:17,760 INFO L480 AbstractCegarLoop]: Abstraction has 99723 states and 112064 transitions. [2018-11-06 21:18:17,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:18:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 99723 states and 112064 transitions. [2018-11-06 21:18:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-11-06 21:18:17,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:17,787 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:18:17,788 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:17,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:17,788 INFO L82 PathProgramCache]: Analyzing trace with hash 215994102, now seen corresponding path program 1 times [2018-11-06 21:18:17,789 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:17,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:17,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:17,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:17,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-06 21:18:18,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:18,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:18:18,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:18:18,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:18:18,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:18:18,159 INFO L87 Difference]: Start difference. First operand 99723 states and 112064 transitions. Second operand 3 states. [2018-11-06 21:18:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:24,855 INFO L93 Difference]: Finished difference Result 198640 states and 223199 transitions. [2018-11-06 21:18:24,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:18:24,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 441 [2018-11-06 21:18:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:24,982 INFO L225 Difference]: With dead ends: 198640 [2018-11-06 21:18:24,983 INFO L226 Difference]: Without dead ends: 85473 [2018-11-06 21:18:25,055 INFO L604 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 [2018-11-06 21:18:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85473 states. [2018-11-06 21:18:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85473 to 83895. [2018-11-06 21:18:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83895 states. [2018-11-06 21:18:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83895 states to 83895 states and 91153 transitions. [2018-11-06 21:18:26,092 INFO L78 Accepts]: Start accepts. Automaton has 83895 states and 91153 transitions. Word has length 441 [2018-11-06 21:18:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:26,093 INFO L480 AbstractCegarLoop]: Abstraction has 83895 states and 91153 transitions. [2018-11-06 21:18:26,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:18:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 83895 states and 91153 transitions. [2018-11-06 21:18:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-11-06 21:18:26,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:26,114 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:18:26,114 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:26,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:26,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1531148240, now seen corresponding path program 1 times [2018-11-06 21:18:26,114 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:26,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:26,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:26,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:26,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:18:26,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:18:26,880 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:18:26,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:27,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:18:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:18:27,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:18:27,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-11-06 21:18:27,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:27,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:27,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:27,400 INFO L87 Difference]: Start difference. First operand 83895 states and 91153 transitions. Second operand 5 states. [2018-11-06 21:18:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:39,773 INFO L93 Difference]: Finished difference Result 240334 states and 260985 transitions. [2018-11-06 21:18:39,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:18:39,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2018-11-06 21:18:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:39,977 INFO L225 Difference]: With dead ends: 240334 [2018-11-06 21:18:39,978 INFO L226 Difference]: Without dead ends: 157229 [2018-11-06 21:18:40,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157229 states. [2018-11-06 21:18:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157229 to 150122. [2018-11-06 21:18:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150122 states. [2018-11-06 21:18:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150122 states to 150122 states and 160353 transitions. [2018-11-06 21:18:42,559 INFO L78 Accepts]: Start accepts. Automaton has 150122 states and 160353 transitions. Word has length 457 [2018-11-06 21:18:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:42,560 INFO L480 AbstractCegarLoop]: Abstraction has 150122 states and 160353 transitions. [2018-11-06 21:18:42,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:18:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 150122 states and 160353 transitions. [2018-11-06 21:18:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-11-06 21:18:42,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:42,577 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:18:42,577 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:42,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1337138215, now seen corresponding path program 1 times [2018-11-06 21:18:42,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:42,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:42,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:42,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:42,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-11-06 21:18:43,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:43,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:18:43,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:43,101 INFO L87 Difference]: Start difference. First operand 150122 states and 160353 transitions. Second operand 5 states. [2018-11-06 21:19:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:02,786 INFO L93 Difference]: Finished difference Result 460498 states and 492262 transitions. [2018-11-06 21:19:02,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:19:02,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 502 [2018-11-06 21:19:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:03,220 INFO L225 Difference]: With dead ends: 460498 [2018-11-06 21:19:03,220 INFO L226 Difference]: Without dead ends: 309588 [2018-11-06 21:19:03,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:19:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309588 states. [2018-11-06 21:19:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309588 to 285736. [2018-11-06 21:19:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285736 states. [2018-11-06 21:19:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285736 states to 285736 states and 303420 transitions. [2018-11-06 21:19:07,348 INFO L78 Accepts]: Start accepts. Automaton has 285736 states and 303420 transitions. Word has length 502 [2018-11-06 21:19:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:07,348 INFO L480 AbstractCegarLoop]: Abstraction has 285736 states and 303420 transitions. [2018-11-06 21:19:07,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:19:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 285736 states and 303420 transitions. [2018-11-06 21:19:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-11-06 21:19:07,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:07,368 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2018-11-06 21:19:07,369 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:07,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:07,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1085181497, now seen corresponding path program 1 times [2018-11-06 21:19:07,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:07,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:07,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:07,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:07,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-11-06 21:19:09,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:09,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:09,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:09,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:09,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:09,590 INFO L87 Difference]: Start difference. First operand 285736 states and 303420 transitions. Second operand 4 states. [2018-11-06 21:19:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:18,665 INFO L93 Difference]: Finished difference Result 566698 states and 602163 transitions. [2018-11-06 21:19:18,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:18,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 539 [2018-11-06 21:19:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:19,106 INFO L225 Difference]: With dead ends: 566698 [2018-11-06 21:19:19,106 INFO L226 Difference]: Without dead ends: 281752 [2018-11-06 21:19:19,225 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281752 states. [2018-11-06 21:19:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281752 to 278598. [2018-11-06 21:19:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278598 states. [2018-11-06 21:19:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278598 states to 278598 states and 291074 transitions. [2018-11-06 21:19:29,175 INFO L78 Accepts]: Start accepts. Automaton has 278598 states and 291074 transitions. Word has length 539 [2018-11-06 21:19:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:29,176 INFO L480 AbstractCegarLoop]: Abstraction has 278598 states and 291074 transitions. [2018-11-06 21:19:29,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:19:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 278598 states and 291074 transitions. [2018-11-06 21:19:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-11-06 21:19:29,226 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:29,227 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:19:29,227 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:29,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 794298383, now seen corresponding path program 1 times [2018-11-06 21:19:29,228 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:29,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:29,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:29,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:29,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2018-11-06 21:19:30,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:30,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:30,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:30,473 INFO L87 Difference]: Start difference. First operand 278598 states and 291074 transitions. Second operand 4 states. [2018-11-06 21:19:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:19:45,290 INFO L93 Difference]: Finished difference Result 640872 states and 670354 transitions. [2018-11-06 21:19:45,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:45,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 794 [2018-11-06 21:19:45,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:19:46,394 INFO L225 Difference]: With dead ends: 640872 [2018-11-06 21:19:46,394 INFO L226 Difference]: Without dead ends: 361486 [2018-11-06 21:19:46,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361486 states. [2018-11-06 21:19:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361486 to 323522. [2018-11-06 21:19:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323522 states. [2018-11-06 21:19:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323522 states to 323522 states and 337052 transitions. [2018-11-06 21:19:49,710 INFO L78 Accepts]: Start accepts. Automaton has 323522 states and 337052 transitions. Word has length 794 [2018-11-06 21:19:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:19:49,711 INFO L480 AbstractCegarLoop]: Abstraction has 323522 states and 337052 transitions. [2018-11-06 21:19:49,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:19:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 323522 states and 337052 transitions. [2018-11-06 21:19:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2018-11-06 21:19:49,791 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:19:49,792 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 21:19:49,792 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:19:49,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:19:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash -909201759, now seen corresponding path program 1 times [2018-11-06 21:19:49,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:19:49,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:19:49,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:49,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:19:49,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:19:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:19:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-11-06 21:19:51,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:19:51,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:19:51,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:19:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:19:51,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:19:51,713 INFO L87 Difference]: Start difference. First operand 323522 states and 337052 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 21:19:54,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:19:54,864 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:19:54,870 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:19:54,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:19:54 BoogieIcfgContainer [2018-11-06 21:19:54,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:19:54,871 INFO L168 Benchmark]: Toolchain (without parser) took 218565.09 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -472.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-06 21:19:54,873 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-06 21:19:54,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2654.43 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: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:54,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 834.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -985.9 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:54,875 INFO L168 Benchmark]: Boogie Preprocessor took 705.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:54,875 INFO L168 Benchmark]: RCFGBuilder took 12449.35 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 241.7 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 38.3 MB). Peak memory consumption was 569.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:19:54,876 INFO L168 Benchmark]: TraceAbstraction took 201916.37 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 156.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-06 21:19:54,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2654.43 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: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 834.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -985.9 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 705.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12449.35 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 241.7 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 38.3 MB). Peak memory consumption was 569.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201916.37 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 156.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (323522states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (9875 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 201.8s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 163.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10977 SDtfs, 40844 SDslu, 3890 SDs, 0 SdLazy, 72918 SolverSat, 17228 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 128.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1562 GetRequests, 1512 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323522occurred in iteration=11, 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: 23.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 81664 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 6566 NumberOfCodeBlocks, 6566 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6550 ConstructedInterpolants, 0 QuantifiedInterpolants, 7220469 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1981 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 7171/7276 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown