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/Problem04_label17_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 13:20:36,479 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 13:20:36,481 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 13:20:36,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 13:20:36,495 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 13:20:36,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 13:20:36,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 13:20:36,500 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 13:20:36,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 13:20:36,505 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 13:20:36,505 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 13:20:36,507 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 13:20:36,508 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 13:20:36,509 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 13:20:36,510 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 13:20:36,511 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 13:20:36,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 13:20:36,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 13:20:36,518 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 13:20:36,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 13:20:36,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 13:20:36,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 13:20:36,531 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 13:20:36,532 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 13:20:36,532 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 13:20:36,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 13:20:36,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 13:20:36,539 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 13:20:36,540 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 13:20:36,541 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 13:20:36,542 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 13:20:36,542 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 13:20:36,542 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 13:20:36,544 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 13:20:36,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 13:20:36,545 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 13:20:36,546 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 [2018-10-24 13:20:36,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 13:20:36,568 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 13:20:36,569 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 13:20:36,571 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 13:20:36,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 13:20:36,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 13:20:36,572 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 13:20:36,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 13:20:36,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 13:20:36,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 13:20:36,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 13:20:36,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 13:20:36,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 13:20:36,573 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 13:20:36,573 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 13:20:36,575 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 13:20:36,575 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 13:20:36,575 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 13:20:36,576 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 13:20:36,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 13:20:36,576 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 13:20:36,576 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 13:20:36,576 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 13:20:36,577 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 13:20:36,577 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 13:20:36,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 13:20:36,577 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 13:20:36,577 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 13:20:36,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 13:20:36,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 13:20:36,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 13:20:36,674 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 13:20:36,674 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 13:20:36,675 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label17_false-unreach-call_false-termination.c [2018-10-24 13:20:36,743 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/acaa3e682/81285371c0164049af92a55359e198c2/FLAGad94fd887 [2018-10-24 13:20:37,531 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 13:20:37,533 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label17_false-unreach-call_false-termination.c [2018-10-24 13:20:37,575 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/acaa3e682/81285371c0164049af92a55359e198c2/FLAGad94fd887 [2018-10-24 13:20:37,598 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/acaa3e682/81285371c0164049af92a55359e198c2 [2018-10-24 13:20:37,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 13:20:37,615 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 13:20:37,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 13:20:37,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 13:20:37,622 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 13:20:37,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:20:37" (1/1) ... [2018-10-24 13:20:37,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ee9256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:37, skipping insertion in model container [2018-10-24 13:20:37,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:20:37" (1/1) ... [2018-10-24 13:20:37,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 13:20:37,809 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 13:20:39,180 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:20:39,186 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 13:20:39,961 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:20:40,002 INFO L193 MainTranslator]: Completed translation [2018-10-24 13:20:40,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40 WrapperNode [2018-10-24 13:20:40,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 13:20:40,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 13:20:40,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 13:20:40,004 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 13:20:40,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 13:20:40,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 13:20:40,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 13:20:40,549 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 13:20:40,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (1/1) ... [2018-10-24 13:20:40,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 13:20:40,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 13:20:40,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 13:20:40,761 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 13:20:40,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (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 [2018-10-24 13:20:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 13:20:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 13:20:40,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 13:20:50,142 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 13:20:50,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:20:50 BoogieIcfgContainer [2018-10-24 13:20:50,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 13:20:50,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 13:20:50,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 13:20:50,150 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 13:20:50,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:20:37" (1/3) ... [2018-10-24 13:20:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f3e490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:20:50, skipping insertion in model container [2018-10-24 13:20:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:40" (2/3) ... [2018-10-24 13:20:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f3e490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:20:50, skipping insertion in model container [2018-10-24 13:20:50,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:20:50" (3/3) ... [2018-10-24 13:20:50,159 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label17_false-unreach-call_false-termination.c [2018-10-24 13:20:50,169 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 13:20:50,186 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 13:20:50,203 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 13:20:50,264 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 13:20:50,265 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 13:20:50,265 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 13:20:50,265 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 13:20:50,265 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 13:20:50,266 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 13:20:50,266 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 13:20:50,266 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 13:20:50,266 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 13:20:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-10-24 13:20:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-10-24 13:20:50,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:20:50,367 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] [2018-10-24 13:20:50,370 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:20:50,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:20:50,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1710905379, now seen corresponding path program 1 times [2018-10-24 13:20:50,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:20:50,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:20:50,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:20:50,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:20:50,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:20:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:20:52,723 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 13:20:53,177 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-24 13:20:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:20:57,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:20:57,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 13:20:57,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 13:20:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 13:20:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 13:20:57,320 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 6 states. [2018-10-24 13:21:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:15,047 INFO L93 Difference]: Finished difference Result 4242 states and 8309 transitions. [2018-10-24 13:21:15,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 13:21:15,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 772 [2018-10-24 13:21:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:15,098 INFO L225 Difference]: With dead ends: 4242 [2018-10-24 13:21:15,098 INFO L226 Difference]: Without dead ends: 3343 [2018-10-24 13:21:15,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 10 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 13:21:15,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2018-10-24 13:21:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3340. [2018-10-24 13:21:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3340 states. [2018-10-24 13:21:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4422 transitions. [2018-10-24 13:21:15,300 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4422 transitions. Word has length 772 [2018-10-24 13:21:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:15,303 INFO L481 AbstractCegarLoop]: Abstraction has 3340 states and 4422 transitions. [2018-10-24 13:21:15,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 13:21:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4422 transitions. [2018-10-24 13:21:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-10-24 13:21:15,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:15,331 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:21:15,331 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:15,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:15,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1116159628, now seen corresponding path program 1 times [2018-10-24 13:21:15,332 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:15,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:15,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:15,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:15,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 13:21:16,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:21:16,167 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 [2018-10-24 13:21:16,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:16,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:21:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 13:21:17,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:21:17,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 13:21:17,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:21:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:21:17,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:21:17,038 INFO L87 Difference]: Start difference. First operand 3340 states and 4422 transitions. Second operand 5 states. [2018-10-24 13:21:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:26,707 INFO L93 Difference]: Finished difference Result 9954 states and 14253 transitions. [2018-10-24 13:21:26,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:21:26,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 835 [2018-10-24 13:21:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:26,742 INFO L225 Difference]: With dead ends: 9954 [2018-10-24 13:21:26,742 INFO L226 Difference]: Without dead ends: 7435 [2018-10-24 13:21:26,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 834 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:21:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2018-10-24 13:21:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7435. [2018-10-24 13:21:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7435 states. [2018-10-24 13:21:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 9566 transitions. [2018-10-24 13:21:26,917 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 9566 transitions. Word has length 835 [2018-10-24 13:21:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:26,917 INFO L481 AbstractCegarLoop]: Abstraction has 7435 states and 9566 transitions. [2018-10-24 13:21:26,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:21:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 9566 transitions. [2018-10-24 13:21:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-10-24 13:21:26,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:26,939 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 13:21:26,940 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:26,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:26,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2010511240, now seen corresponding path program 1 times [2018-10-24 13:21:26,941 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:26,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:26,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:26,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:26,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-10-24 13:21:27,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:21:27,688 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 [2018-10-24 13:21:27,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:27,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:21:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-24 13:21:28,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:21:28,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 13:21:28,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:21:28,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:21:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:21:28,518 INFO L87 Difference]: Start difference. First operand 7435 states and 9566 transitions. Second operand 5 states. [2018-10-24 13:21:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:36,296 INFO L93 Difference]: Finished difference Result 21420 states and 29399 transitions. [2018-10-24 13:21:36,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:21:36,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-10-24 13:21:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:36,351 INFO L225 Difference]: With dead ends: 21420 [2018-10-24 13:21:36,352 INFO L226 Difference]: Without dead ends: 14806 [2018-10-24 13:21:36,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 862 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:21:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14806 states. [2018-10-24 13:21:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14806 to 14806. [2018-10-24 13:21:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14806 states. [2018-10-24 13:21:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14806 states to 14806 states and 18968 transitions. [2018-10-24 13:21:36,658 INFO L78 Accepts]: Start accepts. Automaton has 14806 states and 18968 transitions. Word has length 863 [2018-10-24 13:21:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:36,659 INFO L481 AbstractCegarLoop]: Abstraction has 14806 states and 18968 transitions. [2018-10-24 13:21:36,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:21:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 14806 states and 18968 transitions. [2018-10-24 13:21:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2018-10-24 13:21:36,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:36,694 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 13:21:36,694 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:36,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash -65844764, now seen corresponding path program 1 times [2018-10-24 13:21:36,695 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:36,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:36,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:36,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:36,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 13:21:37,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:37,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:21:37,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:21:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:21:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:21:37,845 INFO L87 Difference]: Start difference. First operand 14806 states and 18968 transitions. Second operand 4 states. [2018-10-24 13:21:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:45,055 INFO L93 Difference]: Finished difference Result 52542 states and 68323 transitions. [2018-10-24 13:21:45,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:21:45,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 922 [2018-10-24 13:21:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:45,151 INFO L225 Difference]: With dead ends: 52542 [2018-10-24 13:21:45,151 INFO L226 Difference]: Without dead ends: 38557 [2018-10-24 13:21:45,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:21:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38557 states. [2018-10-24 13:21:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38557 to 38557. [2018-10-24 13:21:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38557 states. [2018-10-24 13:21:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38557 states to 38557 states and 46525 transitions. [2018-10-24 13:21:45,729 INFO L78 Accepts]: Start accepts. Automaton has 38557 states and 46525 transitions. Word has length 922 [2018-10-24 13:21:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:45,729 INFO L481 AbstractCegarLoop]: Abstraction has 38557 states and 46525 transitions. [2018-10-24 13:21:45,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:21:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 38557 states and 46525 transitions. [2018-10-24 13:21:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-10-24 13:21:45,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:45,800 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 13:21:45,800 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:45,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1215418358, now seen corresponding path program 1 times [2018-10-24 13:21:45,801 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:45,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:45,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:45,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:45,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-24 13:21:46,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:46,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:21:46,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:21:46,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:21:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:21:46,755 INFO L87 Difference]: Start difference. First operand 38557 states and 46525 transitions. Second operand 3 states. [2018-10-24 13:21:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:51,891 INFO L93 Difference]: Finished difference Result 109872 states and 132674 transitions. [2018-10-24 13:21:51,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:21:51,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 964 [2018-10-24 13:21:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:52,039 INFO L225 Difference]: With dead ends: 109872 [2018-10-24 13:21:52,039 INFO L226 Difference]: Without dead ends: 72136 [2018-10-24 13:21:52,087 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 [2018-10-24 13:21:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72136 states. [2018-10-24 13:21:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72136 to 72136. [2018-10-24 13:21:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72136 states. [2018-10-24 13:21:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72136 states to 72136 states and 84957 transitions. [2018-10-24 13:21:52,901 INFO L78 Accepts]: Start accepts. Automaton has 72136 states and 84957 transitions. Word has length 964 [2018-10-24 13:21:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:52,901 INFO L481 AbstractCegarLoop]: Abstraction has 72136 states and 84957 transitions. [2018-10-24 13:21:52,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:21:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 72136 states and 84957 transitions. [2018-10-24 13:21:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-24 13:21:52,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:52,957 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:21:52,957 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:52,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:52,958 INFO L82 PathProgramCache]: Analyzing trace with hash -54716410, now seen corresponding path program 1 times [2018-10-24 13:21:52,958 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:52,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:52,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:52,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:52,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2018-10-24 13:21:54,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:54,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:21:54,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:21:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:21:54,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:21:54,483 INFO L87 Difference]: Start difference. First operand 72136 states and 84957 transitions. Second operand 3 states. [2018-10-24 13:21:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:59,038 INFO L93 Difference]: Finished difference Result 154917 states and 183877 transitions. [2018-10-24 13:21:59,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:21:59,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1070 [2018-10-24 13:21:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:59,176 INFO L225 Difference]: With dead ends: 154917 [2018-10-24 13:21:59,176 INFO L226 Difference]: Without dead ends: 83602 [2018-10-24 13:21:59,241 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 [2018-10-24 13:21:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83602 states. [2018-10-24 13:22:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83602 to 83602. [2018-10-24 13:22:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83602 states. [2018-10-24 13:22:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83602 states to 83602 states and 97545 transitions. [2018-10-24 13:22:00,313 INFO L78 Accepts]: Start accepts. Automaton has 83602 states and 97545 transitions. Word has length 1070 [2018-10-24 13:22:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:00,314 INFO L481 AbstractCegarLoop]: Abstraction has 83602 states and 97545 transitions. [2018-10-24 13:22:00,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:22:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 83602 states and 97545 transitions. [2018-10-24 13:22:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2018-10-24 13:22:00,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:00,381 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:22:00,381 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:00,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:00,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1547056175, now seen corresponding path program 1 times [2018-10-24 13:22:00,382 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:00,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:00,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:00,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:00,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:01,086 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 13:22:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-24 13:22:02,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:02,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:22:02,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:22:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:22:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:22:02,764 INFO L87 Difference]: Start difference. First operand 83602 states and 97545 transitions. Second operand 5 states. [2018-10-24 13:22:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:11,813 INFO L93 Difference]: Finished difference Result 166383 states and 194263 transitions. [2018-10-24 13:22:11,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 13:22:11,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1119 [2018-10-24 13:22:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:11,931 INFO L225 Difference]: With dead ends: 166383 [2018-10-24 13:22:11,931 INFO L226 Difference]: Without dead ends: 83602 [2018-10-24 13:22:11,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:22:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83602 states. [2018-10-24 13:22:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83602 to 83602. [2018-10-24 13:22:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83602 states. [2018-10-24 13:22:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83602 states to 83602 states and 94857 transitions. [2018-10-24 13:22:12,809 INFO L78 Accepts]: Start accepts. Automaton has 83602 states and 94857 transitions. Word has length 1119 [2018-10-24 13:22:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:12,809 INFO L481 AbstractCegarLoop]: Abstraction has 83602 states and 94857 transitions. [2018-10-24 13:22:12,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:22:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 83602 states and 94857 transitions. [2018-10-24 13:22:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1295 [2018-10-24 13:22:12,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:12,866 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:22:12,866 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:12,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash -986068483, now seen corresponding path program 1 times [2018-10-24 13:22:12,867 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:12,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:12,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:12,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:12,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:13,886 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 13:22:14,081 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 13:22:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 629 proven. 263 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-10-24 13:22:16,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:22:16,460 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:22:16,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:16,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:22:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-10-24 13:22:18,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:22:18,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 13:22:18,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 13:22:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 13:22:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 13:22:18,162 INFO L87 Difference]: Start difference. First operand 83602 states and 94857 transitions. Second operand 8 states. [2018-10-24 13:22:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:34,454 INFO L93 Difference]: Finished difference Result 166570 states and 189074 transitions. [2018-10-24 13:22:34,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 13:22:34,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1294 [2018-10-24 13:22:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:34,966 INFO L225 Difference]: With dead ends: 166570 [2018-10-24 13:22:34,966 INFO L226 Difference]: Without dead ends: 83789 [2018-10-24 13:22:34,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1307 GetRequests, 1297 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-10-24 13:22:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83789 states. [2018-10-24 13:22:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83789 to 82783. [2018-10-24 13:22:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82783 states. [2018-10-24 13:22:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82783 states to 82783 states and 90151 transitions. [2018-10-24 13:22:35,801 INFO L78 Accepts]: Start accepts. Automaton has 82783 states and 90151 transitions. Word has length 1294 [2018-10-24 13:22:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:35,802 INFO L481 AbstractCegarLoop]: Abstraction has 82783 states and 90151 transitions. [2018-10-24 13:22:35,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 13:22:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 82783 states and 90151 transitions. [2018-10-24 13:22:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1303 [2018-10-24 13:22:35,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:35,863 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 13:22:35,864 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:35,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:35,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1041898260, now seen corresponding path program 1 times [2018-10-24 13:22:35,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:35,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:35,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:35,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:35,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2018-10-24 13:22:37,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:37,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:22:37,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:22:37,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:22:37,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:22:37,920 INFO L87 Difference]: Start difference. First operand 82783 states and 90151 transitions. Second operand 4 states. [2018-10-24 13:22:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:45,935 INFO L93 Difference]: Finished difference Result 247462 states and 268662 transitions. [2018-10-24 13:22:45,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:22:45,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1302 [2018-10-24 13:22:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:46,100 INFO L225 Difference]: With dead ends: 247462 [2018-10-24 13:22:46,100 INFO L226 Difference]: Without dead ends: 165500 [2018-10-24 13:22:46,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:22:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165500 states. [2018-10-24 13:22:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165500 to 158948. [2018-10-24 13:22:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158948 states. [2018-10-24 13:22:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158948 states to 158948 states and 170631 transitions. [2018-10-24 13:22:48,171 INFO L78 Accepts]: Start accepts. Automaton has 158948 states and 170631 transitions. Word has length 1302 [2018-10-24 13:22:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:48,172 INFO L481 AbstractCegarLoop]: Abstraction has 158948 states and 170631 transitions. [2018-10-24 13:22:48,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:22:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 158948 states and 170631 transitions. [2018-10-24 13:22:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1538 [2018-10-24 13:22:48,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:48,257 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 13:22:48,257 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:48,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:48,258 INFO L82 PathProgramCache]: Analyzing trace with hash 85562113, now seen corresponding path program 1 times [2018-10-24 13:22:48,258 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:48,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:48,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:48,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:48,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 1104 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 13:22:51,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:51,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:22:51,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:22:51,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:22:51,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:22:51,114 INFO L87 Difference]: Start difference. First operand 158948 states and 170631 transitions. Second operand 3 states. [2018-10-24 13:22:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:56,514 INFO L93 Difference]: Finished difference Result 317075 states and 340435 transitions. [2018-10-24 13:22:56,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:22:56,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1537 [2018-10-24 13:22:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:56,722 INFO L225 Difference]: With dead ends: 317075 [2018-10-24 13:22:56,723 INFO L226 Difference]: Without dead ends: 158948 [2018-10-24 13:22:56,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:22:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158948 states. [2018-10-24 13:22:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158948 to 156491. [2018-10-24 13:22:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156491 states. [2018-10-24 13:22:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156491 states to 156491 states and 166418 transitions. [2018-10-24 13:22:58,323 INFO L78 Accepts]: Start accepts. Automaton has 156491 states and 166418 transitions. Word has length 1537 [2018-10-24 13:22:58,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:58,324 INFO L481 AbstractCegarLoop]: Abstraction has 156491 states and 166418 transitions. [2018-10-24 13:22:58,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:22:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 156491 states and 166418 transitions. [2018-10-24 13:22:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2018-10-24 13:22:59,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:59,156 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 13:22:59,156 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:59,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:59,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1249965554, now seen corresponding path program 1 times [2018-10-24 13:22:59,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:59,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:59,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:59,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:59,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 784 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2018-10-24 13:23:02,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:23:02,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:23:02,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:23:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:23:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:23:02,430 INFO L87 Difference]: Start difference. First operand 156491 states and 166418 transitions. Second operand 4 states. [2018-10-24 13:23:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:23:10,262 INFO L93 Difference]: Finished difference Result 321170 states and 341378 transitions. [2018-10-24 13:23:10,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:23:10,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1558 [2018-10-24 13:23:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:23:10,469 INFO L225 Difference]: With dead ends: 321170 [2018-10-24 13:23:10,470 INFO L226 Difference]: Without dead ends: 165500 [2018-10-24 13:23:10,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:23:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165500 states. [2018-10-24 13:23:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165500 to 160586. [2018-10-24 13:23:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160586 states. [2018-10-24 13:23:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160586 states to 160586 states and 169187 transitions. [2018-10-24 13:23:12,725 INFO L78 Accepts]: Start accepts. Automaton has 160586 states and 169187 transitions. Word has length 1558 [2018-10-24 13:23:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:23:12,726 INFO L481 AbstractCegarLoop]: Abstraction has 160586 states and 169187 transitions. [2018-10-24 13:23:12,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:23:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 160586 states and 169187 transitions. [2018-10-24 13:23:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3288 [2018-10-24 13:23:12,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:23:12,896 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:23:12,897 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:23:12,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:23:12,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1654887496, now seen corresponding path program 1 times [2018-10-24 13:23:12,898 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:23:12,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:23:12,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:12,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:12,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8316 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 8042 trivial. 0 not checked. [2018-10-24 13:23:17,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:23:17,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:23:17,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:23:17,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:23:17,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:23:17,934 INFO L87 Difference]: Start difference. First operand 160586 states and 169187 transitions. Second operand 3 states. [2018-10-24 13:23:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:23:23,166 INFO L93 Difference]: Finished difference Result 328543 states and 346260 transitions. [2018-10-24 13:23:23,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:23:23,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3287 [2018-10-24 13:23:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:23:23,333 INFO L225 Difference]: With dead ends: 328543 [2018-10-24 13:23:23,333 INFO L226 Difference]: Without dead ends: 167138 [2018-10-24 13:23:23,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:23:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167138 states. [2018-10-24 13:23:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167138 to 167138. [2018-10-24 13:23:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167138 states. [2018-10-24 13:23:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167138 states to 167138 states and 175045 transitions. [2018-10-24 13:23:25,958 INFO L78 Accepts]: Start accepts. Automaton has 167138 states and 175045 transitions. Word has length 3287 [2018-10-24 13:23:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:23:25,959 INFO L481 AbstractCegarLoop]: Abstraction has 167138 states and 175045 transitions. [2018-10-24 13:23:25,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:23:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 167138 states and 175045 transitions. [2018-10-24 13:23:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3290 [2018-10-24 13:23:26,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:23:26,140 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:23:26,140 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:23:26,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:23:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash 465500508, now seen corresponding path program 1 times [2018-10-24 13:23:26,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:23:26,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:23:26,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:26,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:26,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8345 backedges. 4227 proven. 5 refuted. 0 times theorem prover too weak. 4113 trivial. 0 not checked. [2018-10-24 13:23:35,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:23:35,083 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:23:35,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:36,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:23:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8345 backedges. 4227 proven. 0 refuted. 0 times theorem prover too weak. 4118 trivial. 0 not checked. [2018-10-24 13:23:40,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:23:40,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 13:23:40,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:23:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:23:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:23:40,468 INFO L87 Difference]: Start difference. First operand 167138 states and 175045 transitions. Second operand 5 states. [2018-10-24 13:23:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:23:48,415 INFO L93 Difference]: Finished difference Result 332635 states and 348430 transitions. [2018-10-24 13:23:48,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:23:48,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 3289 [2018-10-24 13:23:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:23:48,654 INFO L225 Difference]: With dead ends: 332635 [2018-10-24 13:23:48,655 INFO L226 Difference]: Without dead ends: 145818 [2018-10-24 13:23:48,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3293 GetRequests, 3289 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:23:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145818 states. [2018-10-24 13:23:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145818 to 144999. [2018-10-24 13:23:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144999 states. [2018-10-24 13:23:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144999 states to 144999 states and 149777 transitions. [2018-10-24 13:23:50,221 INFO L78 Accepts]: Start accepts. Automaton has 144999 states and 149777 transitions. Word has length 3289 [2018-10-24 13:23:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:23:50,222 INFO L481 AbstractCegarLoop]: Abstraction has 144999 states and 149777 transitions. [2018-10-24 13:23:50,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:23:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 144999 states and 149777 transitions. [2018-10-24 13:23:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4686 [2018-10-24 13:23:50,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:23:50,527 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 13:23:50,528 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:23:50,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:23:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2022590703, now seen corresponding path program 1 times [2018-10-24 13:23:50,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:23:50,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:23:50,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:50,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:50,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:24:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18451 backedges. 5886 proven. 0 refuted. 0 times theorem prover too weak. 12565 trivial. 0 not checked. [2018-10-24 13:24:01,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:24:01,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:24:01,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:24:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:24:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:24:01,807 INFO L87 Difference]: Start difference. First operand 144999 states and 149777 transitions. Second operand 4 states. [2018-10-24 13:24:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:24:08,324 INFO L93 Difference]: Finished difference Result 255593 states and 264367 transitions. [2018-10-24 13:24:08,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:24:08,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4685 [2018-10-24 13:24:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:24:08,486 INFO L225 Difference]: With dead ends: 255593 [2018-10-24 13:24:08,487 INFO L226 Difference]: Without dead ends: 144180 [2018-10-24 13:24:08,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:24:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144180 states. [2018-10-24 13:24:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144180 to 140904. [2018-10-24 13:24:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140904 states. [2018-10-24 13:24:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140904 states to 140904 states and 144815 transitions. [2018-10-24 13:24:10,088 INFO L78 Accepts]: Start accepts. Automaton has 140904 states and 144815 transitions. Word has length 4685 [2018-10-24 13:24:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:24:10,089 INFO L481 AbstractCegarLoop]: Abstraction has 140904 states and 144815 transitions. [2018-10-24 13:24:10,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:24:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 140904 states and 144815 transitions. [2018-10-24 13:24:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4892 [2018-10-24 13:24:10,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:24:10,315 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:24:10,315 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:24:10,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:24:10,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1894174259, now seen corresponding path program 1 times [2018-10-24 13:24:10,317 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:24:10,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:24:10,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:24:10,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:24:10,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:24:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:24:11,750 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 Received shutdown request... [2018-10-24 13:24:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 24234 backedges. 3794 proven. 0 refuted. 0 times theorem prover too weak. 20440 trivial. 0 not checked. [2018-10-24 13:24:21,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:24:21,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:24:21,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:24:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:24:21,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:24:21,065 INFO L87 Difference]: Start difference. First operand 140904 states and 144815 transitions. Second operand 4 states. [2018-10-24 13:24:21,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 13:24:21,066 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 13:24:21,073 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 13:24:21,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:24:21 BoogieIcfgContainer [2018-10-24 13:24:21,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 13:24:21,074 INFO L168 Benchmark]: Toolchain (without parser) took 223460.85 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 13:24:21,075 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. [2018-10-24 13:24:21,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2386.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:21,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 544.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:21,081 INFO L168 Benchmark]: Boogie Preprocessor took 211.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:21,082 INFO L168 Benchmark]: RCFGBuilder took 9385.47 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 220.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -150.5 MB). Peak memory consumption was 660.5 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:21,083 INFO L168 Benchmark]: TraceAbstraction took 210926.51 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -170.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 13:24:21,095 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 2386.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 544.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9385.47 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 220.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -150.5 MB). Peak memory consumption was 660.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210926.51 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -170.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4670]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4670). Cancelled while BasicCegarLoop was constructing difference of abstraction (140904states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 210.8s OverallTime, 15 OverallIterations, 18 TraceHistogramMax, 121.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9923 SDtfs, 25178 SDslu, 1285 SDs, 0 SdLazy, 72818 SolverSat, 17646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6361 GetRequests, 6300 SyntacticMatches, 21 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167138occurred in iteration=12, 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: 15.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 19027 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 20.1s InterpolantComputationTime, 34669 NumberOfCodeBlocks, 34669 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 34650 ConstructedInterpolants, 0 QuantifiedInterpolants, 137103875 SizeOfPredicates, 2 NumberOfNonLiveVariables, 7325 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 74505/74781 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown