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/Problem06_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 19:17:50,175 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 19:17:50,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 19:17:50,193 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 19:17:50,194 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 19:17:50,195 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 19:17:50,196 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 19:17:50,198 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 19:17:50,200 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 19:17:50,201 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 19:17:50,202 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 19:17:50,202 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 19:17:50,203 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 19:17:50,204 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 19:17:50,205 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 19:17:50,206 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 19:17:50,207 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 19:17:50,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 19:17:50,210 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 19:17:50,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 19:17:50,213 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 19:17:50,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 19:17:50,218 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 19:17:50,219 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 19:17:50,219 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 19:17:50,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 19:17:50,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 19:17:50,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 19:17:50,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 19:17:50,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 19:17:50,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 19:17:50,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 19:17:50,227 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 19:17:50,228 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 19:17:50,230 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 19:17:50,230 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 19:17:50,231 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 19:17:50,260 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 19:17:50,260 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 19:17:50,261 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 19:17:50,262 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 19:17:50,265 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 19:17:50,265 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 19:17:50,266 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 19:17:50,266 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 19:17:50,266 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 19:17:50,266 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 19:17:50,266 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 19:17:50,268 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 19:17:50,268 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 19:17:50,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 19:17:50,268 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 19:17:50,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 19:17:50,269 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 19:17:50,269 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 19:17:50,269 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 19:17:50,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 19:17:50,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 19:17:50,270 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 19:17:50,271 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 19:17:50,271 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 19:17:50,271 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 19:17:50,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 19:17:50,272 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 19:17:50,272 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 19:17:50,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 19:17:50,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 19:17:50,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 19:17:50,365 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 19:17:50,366 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 19:17:50,366 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label07_true-unreach-call.c [2018-10-23 19:17:50,427 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/481600517/671d89413a1a484ebff05eaa9bcde145/FLAG00b277584 [2018-10-23 19:17:51,325 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 19:17:51,326 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label07_true-unreach-call.c [2018-10-23 19:17:51,383 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/481600517/671d89413a1a484ebff05eaa9bcde145/FLAG00b277584 [2018-10-23 19:17:51,399 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/481600517/671d89413a1a484ebff05eaa9bcde145 [2018-10-23 19:17:51,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 19:17:51,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 19:17:51,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 19:17:51,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 19:17:51,420 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 19:17:51,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:17:51" (1/1) ... [2018-10-23 19:17:51,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a9374c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:51, skipping insertion in model container [2018-10-23 19:17:51,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:17:51" (1/1) ... [2018-10-23 19:17:51,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 19:17:51,695 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 19:17:53,764 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 19:17:53,770 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 19:17:54,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 19:17:55,063 INFO L193 MainTranslator]: Completed translation [2018-10-23 19:17:55,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55 WrapperNode [2018-10-23 19:17:55,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 19:17:55,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 19:17:55,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 19:17:55,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 19:17:55,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:55,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:55,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 19:17:55,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 19:17:55,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 19:17:55,872 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 19:17:55,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:55,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:55,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:55,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:56,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:56,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:56,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... [2018-10-23 19:17:56,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 19:17:56,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 19:17:56,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 19:17:56,269 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 19:17:56,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 19:17:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 19:17:56,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 19:17:56,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 19:18:08,670 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 19:18:08,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:18:08 BoogieIcfgContainer [2018-10-23 19:18:08,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 19:18:08,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 19:18:08,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 19:18:08,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 19:18:08,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:17:51" (1/3) ... [2018-10-23 19:18:08,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d17749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:18:08, skipping insertion in model container [2018-10-23 19:18:08,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:17:55" (2/3) ... [2018-10-23 19:18:08,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d17749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:18:08, skipping insertion in model container [2018-10-23 19:18:08,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:18:08" (3/3) ... [2018-10-23 19:18:08,681 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label07_true-unreach-call.c [2018-10-23 19:18:08,692 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 19:18:08,705 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 19:18:08,724 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 19:18:08,774 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 19:18:08,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 19:18:08,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 19:18:08,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 19:18:08,775 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 19:18:08,775 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 19:18:08,776 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 19:18:08,776 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 19:18:08,776 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 19:18:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states. [2018-10-23 19:18:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2018-10-23 19:18:08,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:18:08,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:18:08,887 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:18:08,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:18:08,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1067421407, now seen corresponding path program 1 times [2018-10-23 19:18:08,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:18:08,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:18:08,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:08,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:18:08,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:18:11,396 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 19:18:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 19:18:12,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:18:12,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:18:12,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:18:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:18:12,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:18:12,508 INFO L87 Difference]: Start difference. First operand 1291 states. Second operand 4 states. [2018-10-23 19:18:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:18:28,992 INFO L93 Difference]: Finished difference Result 4729 states and 8991 transitions. [2018-10-23 19:18:28,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:18:28,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 963 [2018-10-23 19:18:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:18:29,056 INFO L225 Difference]: With dead ends: 4729 [2018-10-23 19:18:29,056 INFO L226 Difference]: Without dead ends: 3431 [2018-10-23 19:18:29,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:18:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2018-10-23 19:18:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3353. [2018-10-23 19:18:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3353 states. [2018-10-23 19:18:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5806 transitions. [2018-10-23 19:18:29,260 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5806 transitions. Word has length 963 [2018-10-23 19:18:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:18:29,263 INFO L481 AbstractCegarLoop]: Abstraction has 3353 states and 5806 transitions. [2018-10-23 19:18:29,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:18:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5806 transitions. [2018-10-23 19:18:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2018-10-23 19:18:29,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:18:29,299 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:18:29,300 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:18:29,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:18:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash 871746168, now seen corresponding path program 1 times [2018-10-23 19:18:29,301 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:18:29,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:18:29,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:29,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:18:29,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:18:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 19:18:30,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:18:30,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 19:18:30,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:18:30,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:18:30,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:18:30,090 INFO L87 Difference]: Start difference. First operand 3353 states and 5806 transitions. Second operand 3 states. [2018-10-23 19:18:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:18:33,603 INFO L93 Difference]: Finished difference Result 10040 states and 17399 transitions. [2018-10-23 19:18:33,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:18:33,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 968 [2018-10-23 19:18:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:18:33,638 INFO L225 Difference]: With dead ends: 10040 [2018-10-23 19:18:33,639 INFO L226 Difference]: Without dead ends: 6689 [2018-10-23 19:18:33,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:18:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2018-10-23 19:18:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 6685. [2018-10-23 19:18:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6685 states. [2018-10-23 19:18:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 11560 transitions. [2018-10-23 19:18:33,784 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 11560 transitions. Word has length 968 [2018-10-23 19:18:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:18:33,784 INFO L481 AbstractCegarLoop]: Abstraction has 6685 states and 11560 transitions. [2018-10-23 19:18:33,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:18:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 11560 transitions. [2018-10-23 19:18:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2018-10-23 19:18:33,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:18:33,843 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:18:33,843 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:18:33,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:18:33,844 INFO L82 PathProgramCache]: Analyzing trace with hash 606898342, now seen corresponding path program 1 times [2018-10-23 19:18:33,844 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:18:33,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:18:33,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:33,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:18:33,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:18:34,198 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 19:18:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 19:18:34,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:18:34,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:18:34,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:18:34,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:18:34,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:18:34,741 INFO L87 Difference]: Start difference. First operand 6685 states and 11560 transitions. Second operand 4 states. [2018-10-23 19:18:45,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:18:45,148 INFO L93 Difference]: Finished difference Result 25463 states and 44591 transitions. [2018-10-23 19:18:45,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:18:45,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 975 [2018-10-23 19:18:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:18:45,233 INFO L225 Difference]: With dead ends: 25463 [2018-10-23 19:18:45,233 INFO L226 Difference]: Without dead ends: 18780 [2018-10-23 19:18:45,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:18:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18780 states. [2018-10-23 19:18:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18780 to 18704. [2018-10-23 19:18:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18704 states. [2018-10-23 19:18:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 29260 transitions. [2018-10-23 19:18:45,663 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 29260 transitions. Word has length 975 [2018-10-23 19:18:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:18:45,663 INFO L481 AbstractCegarLoop]: Abstraction has 18704 states and 29260 transitions. [2018-10-23 19:18:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:18:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 29260 transitions. [2018-10-23 19:18:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2018-10-23 19:18:45,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:18:45,711 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:18:45,712 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:18:45,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:18:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1888988765, now seen corresponding path program 1 times [2018-10-23 19:18:45,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:18:45,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:18:45,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:45,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:18:45,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:18:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 19:18:46,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:18:46,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 19:18:46,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:18:46,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:18:46,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:18:46,559 INFO L87 Difference]: Start difference. First operand 18704 states and 29260 transitions. Second operand 3 states. [2018-10-23 19:18:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:18:52,563 INFO L93 Difference]: Finished difference Result 55398 states and 86861 transitions. [2018-10-23 19:18:52,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:18:52,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 998 [2018-10-23 19:18:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:18:52,647 INFO L225 Difference]: With dead ends: 55398 [2018-10-23 19:18:52,648 INFO L226 Difference]: Without dead ends: 36696 [2018-10-23 19:18:52,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:18:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36696 states. [2018-10-23 19:18:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36696 to 36678. [2018-10-23 19:18:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36678 states. [2018-10-23 19:18:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36678 states to 36678 states and 53571 transitions. [2018-10-23 19:18:53,226 INFO L78 Accepts]: Start accepts. Automaton has 36678 states and 53571 transitions. Word has length 998 [2018-10-23 19:18:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:18:53,226 INFO L481 AbstractCegarLoop]: Abstraction has 36678 states and 53571 transitions. [2018-10-23 19:18:53,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:18:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 36678 states and 53571 transitions. [2018-10-23 19:18:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2018-10-23 19:18:53,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:18:53,309 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:18:53,310 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:18:53,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:18:53,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1785702729, now seen corresponding path program 1 times [2018-10-23 19:18:53,311 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:18:53,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:18:53,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:53,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:18:53,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:18:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:18:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-23 19:18:54,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:18:54,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 19:18:54,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:18:54,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:18:54,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:18:54,485 INFO L87 Difference]: Start difference. First operand 36678 states and 53571 transitions. Second operand 3 states. [2018-10-23 19:19:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:19:01,837 INFO L93 Difference]: Finished difference Result 109266 states and 159744 transitions. [2018-10-23 19:19:01,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:19:01,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1006 [2018-10-23 19:19:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:19:01,987 INFO L225 Difference]: With dead ends: 109266 [2018-10-23 19:19:01,987 INFO L226 Difference]: Without dead ends: 72590 [2018-10-23 19:19:02,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:19:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72590 states. [2018-10-23 19:19:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72590 to 72550. [2018-10-23 19:19:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72550 states. [2018-10-23 19:19:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72550 states to 72550 states and 98821 transitions. [2018-10-23 19:19:03,411 INFO L78 Accepts]: Start accepts. Automaton has 72550 states and 98821 transitions. Word has length 1006 [2018-10-23 19:19:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:19:03,411 INFO L481 AbstractCegarLoop]: Abstraction has 72550 states and 98821 transitions. [2018-10-23 19:19:03,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:19:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 72550 states and 98821 transitions. [2018-10-23 19:19:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2018-10-23 19:19:03,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:19:03,513 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:19:03,514 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:19:03,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:19:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash 111472042, now seen corresponding path program 1 times [2018-10-23 19:19:03,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:19:03,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:19:03,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:19:03,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:19:03,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:19:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:19:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 106 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-23 19:19:04,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 19:19:04,726 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 19:19:04,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:19:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:19:05,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 19:19:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-23 19:19:06,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 19:19:06,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 19:19:06,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 19:19:06,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 19:19:06,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 19:19:06,315 INFO L87 Difference]: Start difference. First operand 72550 states and 98821 transitions. Second operand 5 states. [2018-10-23 19:19:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:19:24,553 INFO L93 Difference]: Finished difference Result 496271 states and 671451 transitions. [2018-10-23 19:19:24,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 19:19:24,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1079 [2018-10-23 19:19:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:19:25,115 INFO L225 Difference]: With dead ends: 496271 [2018-10-23 19:19:25,116 INFO L226 Difference]: Without dead ends: 423723 [2018-10-23 19:19:25,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1078 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 19:19:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423723 states. [2018-10-23 19:19:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423723 to 423509. [2018-10-23 19:19:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423509 states. [2018-10-23 19:19:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423509 states to 423509 states and 537777 transitions. [2018-10-23 19:19:30,316 INFO L78 Accepts]: Start accepts. Automaton has 423509 states and 537777 transitions. Word has length 1079 [2018-10-23 19:19:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:19:30,317 INFO L481 AbstractCegarLoop]: Abstraction has 423509 states and 537777 transitions. [2018-10-23 19:19:30,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 19:19:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 423509 states and 537777 transitions. [2018-10-23 19:19:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2018-10-23 19:19:39,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:19:39,171 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:19:39,172 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:19:39,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:19:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1312439821, now seen corresponding path program 1 times [2018-10-23 19:19:39,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:19:39,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:19:39,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:19:39,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:19:39,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:19:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:19:39,868 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 19:19:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-23 19:19:40,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:19:40,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 19:19:40,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 19:19:40,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 19:19:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:19:40,370 INFO L87 Difference]: Start difference. First operand 423509 states and 537777 transitions. Second operand 4 states. [2018-10-23 19:19:54,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:19:54,918 INFO L93 Difference]: Finished difference Result 1265958 states and 1579412 transitions. [2018-10-23 19:19:54,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 19:19:54,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1098 [2018-10-23 19:19:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:19:56,228 INFO L225 Difference]: With dead ends: 1265958 [2018-10-23 19:19:56,228 INFO L226 Difference]: Without dead ends: 842451 [2018-10-23 19:19:56,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 19:19:57,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842451 states. [2018-10-23 19:20:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842451 to 632933. [2018-10-23 19:20:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632933 states. [2018-10-23 19:20:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632933 states to 632933 states and 788629 transitions. [2018-10-23 19:20:09,603 INFO L78 Accepts]: Start accepts. Automaton has 632933 states and 788629 transitions. Word has length 1098 [2018-10-23 19:20:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:20:09,603 INFO L481 AbstractCegarLoop]: Abstraction has 632933 states and 788629 transitions. [2018-10-23 19:20:09,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 19:20:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 632933 states and 788629 transitions. [2018-10-23 19:20:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2018-10-23 19:20:10,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:20:10,056 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:20:10,056 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:20:10,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:20:10,058 INFO L82 PathProgramCache]: Analyzing trace with hash -91803351, now seen corresponding path program 1 times [2018-10-23 19:20:10,058 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:20:10,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:20:10,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:20:10,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:20:10,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:20:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:20:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 19:20:18,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 19:20:18,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 19:20:18,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 19:20:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 19:20:18,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:20:18,052 INFO L87 Difference]: Start difference. First operand 632933 states and 788629 transitions. Second operand 3 states. [2018-10-23 19:20:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 19:20:32,932 INFO L93 Difference]: Finished difference Result 1567001 states and 1933141 transitions. [2018-10-23 19:20:32,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 19:20:32,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1111 [2018-10-23 19:20:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 19:20:34,358 INFO L225 Difference]: With dead ends: 1567001 [2018-10-23 19:20:34,358 INFO L226 Difference]: Without dead ends: 934070 [2018-10-23 19:20:34,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 19:20:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934070 states. [2018-10-23 19:20:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934070 to 933972. [2018-10-23 19:20:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933972 states. [2018-10-23 19:20:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933972 states to 933972 states and 1142722 transitions. [2018-10-23 19:20:48,747 INFO L78 Accepts]: Start accepts. Automaton has 933972 states and 1142722 transitions. Word has length 1111 [2018-10-23 19:20:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 19:20:48,747 INFO L481 AbstractCegarLoop]: Abstraction has 933972 states and 1142722 transitions. [2018-10-23 19:20:48,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 19:20:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 933972 states and 1142722 transitions. [2018-10-23 19:20:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2018-10-23 19:20:59,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 19:20:59,768 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 19:20:59,768 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 19:20:59,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 19:20:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash -668403714, now seen corresponding path program 1 times [2018-10-23 19:20:59,769 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 19:20:59,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 19:20:59,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:20:59,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:20:59,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 19:20:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:21:00,618 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-10-23 19:21:01,088 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 19:21:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 154 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-23 19:21:02,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 19:21:02,816 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 19:21:02,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 19:21:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 19:21:03,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 19:21:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 19:21:04,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 19:21:04,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-23 19:21:04,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 19:21:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 19:21:04,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 19:21:04,293 INFO L87 Difference]: Start difference. First operand 933972 states and 1142722 transitions. Second operand 7 states. [2018-10-23 19:21:04,481 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 Received shutdown request... [2018-10-23 19:21:13,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 19:21:13,859 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 19:21:13,866 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 19:21:13,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:21:13 BoogieIcfgContainer [2018-10-23 19:21:13,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 19:21:13,867 INFO L168 Benchmark]: Toolchain (without parser) took 202454.00 ms. Allocated memory was 1.5 GB in the beginning and 7.1 GB in the end (delta: 5.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-10-23 19:21:13,869 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. [2018-10-23 19:21:13,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3648.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 359.4 MB). Peak memory consumption was 359.4 MB. Max. memory is 7.1 GB. [2018-10-23 19:21:13,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 805.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-10-23 19:21:13,871 INFO L168 Benchmark]: Boogie Preprocessor took 396.75 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-10-23 19:21:13,872 INFO L168 Benchmark]: RCFGBuilder took 12403.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 177.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 494.8 MB). Peak memory consumption was 672.5 MB. Max. memory is 7.1 GB. [2018-10-23 19:21:13,873 INFO L168 Benchmark]: TraceAbstraction took 185193.36 ms. Allocated memory was 2.6 GB in the beginning and 7.1 GB in the end (delta: 4.5 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-23 19:21:13,878 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 3648.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 359.4 MB). Peak memory consumption was 359.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 805.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 396.75 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12403.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 177.7 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 494.8 MB). Peak memory consumption was 672.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 185193.36 ms. Allocated memory was 2.6 GB in the beginning and 7.1 GB in the end (delta: 4.5 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9378]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9378). Cancelled while BasicCegarLoop was constructing difference of abstraction (933972states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (230734 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1291 locations, 1 error locations. TIMEOUT Result, 185.1s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 105.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9302 SDtfs, 30016 SDslu, 5755 SDs, 0 SdLazy, 40226 SolverSat, 13279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2249 GetRequests, 2217 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=933972occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 34.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 210046 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 11543 NumberOfCodeBlocks, 11543 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 11532 ConstructedInterpolants, 0 QuantifiedInterpolants, 16415992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2783 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 1511/1526 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown