java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:49:45,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:49:45,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:49:45,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 13:49:45,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 13:49:45,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 13:49:45,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 13:49:45,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 13:49:45,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 13:49:45,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 13:49:45,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 13:49:45,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 13:49:45,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:49:45,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:49:45,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:49:45,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:49:45,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:49:45,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:49:45,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:49:45,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:49:45,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:49:45,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:49:45,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:49:45,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:49:45,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 13:49:45,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 13:49:45,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 13:49:45,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 13:49:45,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 13:49:45,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 13:49:45,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 13:49:45,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 13:49:45,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 13:49:45,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 13:49:45,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 13:49:45,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 13:49:45,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 13:49:45,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 13:49:45,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:49:45,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:49:45,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:49:45,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 13:49:45,436 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:49:45,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:49:45,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:49:45,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:49:45,438 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:49:45,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:49:45,438 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:49:45,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:49:45,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:49:45,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:49:45,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:49:45,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:49:45,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:49:45,440 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:49:45,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:49:45,440 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:49:45,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:49:45,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:49:45,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:49:45,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:49:45,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:49:45,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:49:45,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:49:45,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:49:45,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:49:45,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:49:45,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:49:45,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:49:45,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:49:45,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:49:45,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:49:45,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:49:45,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:49:45,494 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:49:45,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label19.c [2019-09-07 13:49:45,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e1775df/dd020542be2643599a4614a7bd417f29/FLAGbfe7a7ef5 [2019-09-07 13:49:46,347 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:49:46,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label19.c [2019-09-07 13:49:46,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e1775df/dd020542be2643599a4614a7bd417f29/FLAGbfe7a7ef5 [2019-09-07 13:49:46,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e1775df/dd020542be2643599a4614a7bd417f29 [2019-09-07 13:49:46,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:49:46,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:49:46,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:49:46,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:49:46,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:49:46,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:49:46" (1/1) ... [2019-09-07 13:49:46,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f255d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:46, skipping insertion in model container [2019-09-07 13:49:46,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:49:46" (1/1) ... [2019-09-07 13:49:46,455 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:49:46,608 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:49:47,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:49:47,964 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:49:48,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:49:48,687 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:49:48,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48 WrapperNode [2019-09-07 13:49:48,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:49:48,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:49:48,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:49:48,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:49:48,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:48,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:48,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:48,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:48,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:48,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:48,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... [2019-09-07 13:49:49,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:49:49,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:49:49,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:49:49,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:49:49,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:49:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:49:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:49:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:49:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 13:49:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 13:49:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 13:49:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:49:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:49:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 13:49:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 13:49:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 13:49:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:49:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:49:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:49:49,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:49:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:49:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:49:53,367 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:49:53,367 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:49:53,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:49:53 BoogieIcfgContainer [2019-09-07 13:49:53,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:49:53,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:49:53,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:49:53,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:49:53,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:49:46" (1/3) ... [2019-09-07 13:49:53,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6bc17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:49:53, skipping insertion in model container [2019-09-07 13:49:53,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:49:48" (2/3) ... [2019-09-07 13:49:53,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6bc17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:49:53, skipping insertion in model container [2019-09-07 13:49:53,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:49:53" (3/3) ... [2019-09-07 13:49:53,384 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label19.c [2019-09-07 13:49:53,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:49:53,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:49:53,424 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:49:53,475 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:49:53,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:49:53,476 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:49:53,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:49:53,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:49:53,476 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:49:53,476 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:49:53,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:49:53,477 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:49:53,513 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 13:49:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2019-09-07 13:49:53,562 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:49:53,564 INFO L399 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] [2019-09-07 13:49:53,566 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:49:53,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:49:53,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1220871202, now seen corresponding path program 1 times [2019-09-07 13:49:53,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:49:53,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:49:53,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:49:53,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:49:53,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:49:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:49:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:49:55,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:49:55,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:49:55,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:49:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:49:55,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:49:55,806 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 13:49:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:49:59,968 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 13:49:59,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:49:59,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 769 [2019-09-07 13:49:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:50:00,040 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 13:50:00,041 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 13:50:00,057 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:50:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 13:50:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 13:50:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 13:50:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3016 transitions. [2019-09-07 13:50:00,287 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3016 transitions. Word has length 769 [2019-09-07 13:50:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:50:00,291 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 3016 transitions. [2019-09-07 13:50:00,291 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:50:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3016 transitions. [2019-09-07 13:50:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2019-09-07 13:50:00,352 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:50:00,352 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:50:00,353 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:50:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:50:00,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1060439117, now seen corresponding path program 1 times [2019-09-07 13:50:00,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:50:00,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:50:00,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:00,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:00,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:50:01,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:50:01,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 13:50:01,663 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 13:50:01,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 13:50:01,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-07 13:50:01,663 INFO L87 Difference]: Start difference. First operand 1676 states and 3016 transitions. Second operand 5 states. [2019-09-07 13:50:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:50:10,215 INFO L93 Difference]: Finished difference Result 6682 states and 12166 transitions. [2019-09-07 13:50:10,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 13:50:10,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 777 [2019-09-07 13:50:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:50:10,249 INFO L225 Difference]: With dead ends: 6682 [2019-09-07 13:50:10,250 INFO L226 Difference]: Without dead ends: 5012 [2019-09-07 13:50:10,254 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-07 13:50:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2019-09-07 13:50:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2019-09-07 13:50:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5012 states. [2019-09-07 13:50:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 8096 transitions. [2019-09-07 13:50:10,384 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 8096 transitions. Word has length 777 [2019-09-07 13:50:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:50:10,386 INFO L475 AbstractCegarLoop]: Abstraction has 5012 states and 8096 transitions. [2019-09-07 13:50:10,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 13:50:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 8096 transitions. [2019-09-07 13:50:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2019-09-07 13:50:10,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:50:10,411 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:50:10,412 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:50:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:50:10,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1665918638, now seen corresponding path program 1 times [2019-09-07 13:50:10,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:50:10,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:50:10,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:10,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:10,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:50:11,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:50:11,112 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:50:11,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:50:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:11,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:50:11,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:50:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-07 13:50:11,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:50:12,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:50:12,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:50:12,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:50:12,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:50:12,004 INFO L87 Difference]: Start difference. First operand 5012 states and 8096 transitions. Second operand 9 states. [2019-09-07 13:50:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:50:23,901 INFO L93 Difference]: Finished difference Result 18834 states and 31316 transitions. [2019-09-07 13:50:23,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-07 13:50:23,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 804 [2019-09-07 13:50:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:50:23,991 INFO L225 Difference]: With dead ends: 18834 [2019-09-07 13:50:23,992 INFO L226 Difference]: Without dead ends: 13828 [2019-09-07 13:50:24,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 819 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2019-09-07 13:50:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13828 states. [2019-09-07 13:50:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13828 to 13733. [2019-09-07 13:50:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13733 states. [2019-09-07 13:50:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13733 states to 13733 states and 21275 transitions. [2019-09-07 13:50:24,489 INFO L78 Accepts]: Start accepts. Automaton has 13733 states and 21275 transitions. Word has length 804 [2019-09-07 13:50:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:50:24,489 INFO L475 AbstractCegarLoop]: Abstraction has 13733 states and 21275 transitions. [2019-09-07 13:50:24,489 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:50:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13733 states and 21275 transitions. [2019-09-07 13:50:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2019-09-07 13:50:24,544 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:50:24,545 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 13:50:24,545 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:50:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:50:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash -437982363, now seen corresponding path program 1 times [2019-09-07 13:50:24,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:50:24,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:50:24,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:24,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:24,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 129 proven. 58 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 13:50:25,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:50:25,293 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:50:25,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:50:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:25,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:50:25,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:50:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-07 13:50:26,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:50:26,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:50:26,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:50:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:50:26,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:50:26,084 INFO L87 Difference]: Start difference. First operand 13733 states and 21275 transitions. Second operand 9 states. [2019-09-07 13:50:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:50:41,705 INFO L93 Difference]: Finished difference Result 65304 states and 119440 transitions. [2019-09-07 13:50:41,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-07 13:50:41,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 897 [2019-09-07 13:50:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:50:42,148 INFO L225 Difference]: With dead ends: 65304 [2019-09-07 13:50:42,148 INFO L226 Difference]: Without dead ends: 51577 [2019-09-07 13:50:42,222 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 13:50:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51577 states. [2019-09-07 13:50:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51577 to 50782. [2019-09-07 13:50:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50782 states. [2019-09-07 13:50:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50782 states to 50782 states and 73134 transitions. [2019-09-07 13:50:44,119 INFO L78 Accepts]: Start accepts. Automaton has 50782 states and 73134 transitions. Word has length 897 [2019-09-07 13:50:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:50:44,119 INFO L475 AbstractCegarLoop]: Abstraction has 50782 states and 73134 transitions. [2019-09-07 13:50:44,119 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:50:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 50782 states and 73134 transitions. [2019-09-07 13:50:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2019-09-07 13:50:44,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:50:44,249 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:50:44,250 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:50:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:50:44,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2129588404, now seen corresponding path program 1 times [2019-09-07 13:50:44,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:50:44,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:50:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:44,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:50:46,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:50:46,545 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:50:46,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:46,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:50:46,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:50:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:50:47,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:50:47,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:50:47,427 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:50:47,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:50:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:50:47,428 INFO L87 Difference]: Start difference. First operand 50782 states and 73134 transitions. Second operand 9 states. [2019-09-07 13:51:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:51:01,106 INFO L93 Difference]: Finished difference Result 119530 states and 181035 transitions. [2019-09-07 13:51:01,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 13:51:01,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 917 [2019-09-07 13:51:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:51:01,432 INFO L225 Difference]: With dead ends: 119530 [2019-09-07 13:51:01,433 INFO L226 Difference]: Without dead ends: 68754 [2019-09-07 13:51:01,549 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:51:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68754 states. [2019-09-07 13:51:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68754 to 68458. [2019-09-07 13:51:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68458 states. [2019-09-07 13:51:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68458 states to 68458 states and 98859 transitions. [2019-09-07 13:51:03,299 INFO L78 Accepts]: Start accepts. Automaton has 68458 states and 98859 transitions. Word has length 917 [2019-09-07 13:51:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:51:03,300 INFO L475 AbstractCegarLoop]: Abstraction has 68458 states and 98859 transitions. [2019-09-07 13:51:03,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:51:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 68458 states and 98859 transitions. [2019-09-07 13:51:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2019-09-07 13:51:03,473 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:51:03,474 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:51:03,475 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:51:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:51:03,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1957910317, now seen corresponding path program 1 times [2019-09-07 13:51:03,475 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:51:03,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:51:03,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:51:03,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:51:03,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:51:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:51:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 189 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-07 13:51:04,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:51:04,178 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:51:04,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:51:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:51:04,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:51:04,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:51:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-09-07 13:51:05,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:51:05,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:51:05,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:51:05,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:51:05,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:51:05,351 INFO L87 Difference]: Start difference. First operand 68458 states and 98859 transitions. Second operand 9 states. [2019-09-07 13:51:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:51:20,432 INFO L93 Difference]: Finished difference Result 209093 states and 329409 transitions. [2019-09-07 13:51:20,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 13:51:20,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 950 [2019-09-07 13:51:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:51:21,119 INFO L225 Difference]: With dead ends: 209093 [2019-09-07 13:51:21,119 INFO L226 Difference]: Without dead ends: 140641 [2019-09-07 13:51:21,322 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 13:51:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140641 states. [2019-09-07 13:51:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140641 to 127281. [2019-09-07 13:51:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127281 states. [2019-09-07 13:51:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127281 states to 127281 states and 177050 transitions. [2019-09-07 13:51:24,092 INFO L78 Accepts]: Start accepts. Automaton has 127281 states and 177050 transitions. Word has length 950 [2019-09-07 13:51:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:51:24,093 INFO L475 AbstractCegarLoop]: Abstraction has 127281 states and 177050 transitions. [2019-09-07 13:51:24,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:51:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand 127281 states and 177050 transitions. [2019-09-07 13:51:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2019-09-07 13:51:24,403 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:51:24,404 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:51:24,405 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:51:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:51:24,406 INFO L82 PathProgramCache]: Analyzing trace with hash -468343770, now seen corresponding path program 1 times [2019-09-07 13:51:24,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:51:24,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:51:24,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:51:24,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:51:24,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:51:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:51:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 296 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:51:27,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:51:27,021 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:51:27,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:51:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:51:27,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:51:27,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:51:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:51:28,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:51:28,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:51:28,374 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:51:28,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:51:28,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:51:28,376 INFO L87 Difference]: Start difference. First operand 127281 states and 177050 transitions. Second operand 13 states. [2019-09-07 13:51:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:51:48,357 INFO L93 Difference]: Finished difference Result 293722 states and 445843 transitions. [2019-09-07 13:51:48,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-07 13:51:48,358 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1070 [2019-09-07 13:51:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:51:49,279 INFO L225 Difference]: With dead ends: 293722 [2019-09-07 13:51:49,279 INFO L226 Difference]: Without dead ends: 166447 [2019-09-07 13:51:49,462 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1085 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=517, Invalid=1645, Unknown=0, NotChecked=0, Total=2162 [2019-09-07 13:51:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166447 states. [2019-09-07 13:51:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166447 to 160825. [2019-09-07 13:51:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160825 states. [2019-09-07 13:51:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160825 states to 160825 states and 231384 transitions. [2019-09-07 13:51:52,920 INFO L78 Accepts]: Start accepts. Automaton has 160825 states and 231384 transitions. Word has length 1070 [2019-09-07 13:51:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:51:52,921 INFO L475 AbstractCegarLoop]: Abstraction has 160825 states and 231384 transitions. [2019-09-07 13:51:52,921 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:51:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 160825 states and 231384 transitions. [2019-09-07 13:51:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2019-09-07 13:51:53,275 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:51:53,276 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:51:53,276 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:51:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:51:53,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1695620750, now seen corresponding path program 1 times [2019-09-07 13:51:53,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:51:53,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:51:53,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:51:53,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:51:53,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:51:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:51:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 365 proven. 172 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:51:57,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:51:57,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:51:57,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:51:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:51:57,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:51:57,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:51:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-07 13:51:59,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:51:59,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:51:59,029 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:51:59,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:51:59,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:51:59,030 INFO L87 Difference]: Start difference. First operand 160825 states and 231384 transitions. Second operand 9 states. [2019-09-07 13:52:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:52:11,847 INFO L93 Difference]: Finished difference Result 329370 states and 493142 transitions. [2019-09-07 13:52:11,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 13:52:11,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1140 [2019-09-07 13:52:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:52:12,749 INFO L225 Difference]: With dead ends: 329370 [2019-09-07 13:52:12,749 INFO L226 Difference]: Without dead ends: 168555 [2019-09-07 13:52:13,021 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1158 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-09-07 13:52:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168555 states. [2019-09-07 13:52:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168555 to 163939. [2019-09-07 13:52:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163939 states. [2019-09-07 13:52:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163939 states to 163939 states and 212122 transitions. [2019-09-07 13:52:16,400 INFO L78 Accepts]: Start accepts. Automaton has 163939 states and 212122 transitions. Word has length 1140 [2019-09-07 13:52:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:52:16,400 INFO L475 AbstractCegarLoop]: Abstraction has 163939 states and 212122 transitions. [2019-09-07 13:52:16,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:52:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 163939 states and 212122 transitions. [2019-09-07 13:52:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2019-09-07 13:52:16,609 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:52:16,610 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:52:16,610 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:52:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:52:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash -373541806, now seen corresponding path program 1 times [2019-09-07 13:52:16,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:52:16,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:52:16,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:52:16,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:52:16,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:52:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:52:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 504 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2019-09-07 13:52:21,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:52:21,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 13:52:21,591 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 13:52:21,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 13:52:21,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:52:21,592 INFO L87 Difference]: Start difference. First operand 163939 states and 212122 transitions. Second operand 4 states. [2019-09-07 13:52:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:52:29,482 INFO L93 Difference]: Finished difference Result 315528 states and 400971 transitions. [2019-09-07 13:52:29,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 13:52:29,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1279 [2019-09-07 13:52:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:52:30,091 INFO L225 Difference]: With dead ends: 315528 [2019-09-07 13:52:30,092 INFO L226 Difference]: Without dead ends: 152429 [2019-09-07 13:52:30,301 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:52:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152429 states. [2019-09-07 13:52:31,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152429 to 150356. [2019-09-07 13:52:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150356 states. [2019-09-07 13:52:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150356 states to 150356 states and 179777 transitions. [2019-09-07 13:52:32,232 INFO L78 Accepts]: Start accepts. Automaton has 150356 states and 179777 transitions. Word has length 1279 [2019-09-07 13:52:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:52:32,233 INFO L475 AbstractCegarLoop]: Abstraction has 150356 states and 179777 transitions. [2019-09-07 13:52:32,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 13:52:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 150356 states and 179777 transitions. [2019-09-07 13:52:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2019-09-07 13:52:32,425 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:52:32,426 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:52:32,426 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:52:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:52:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1251094383, now seen corresponding path program 1 times [2019-09-07 13:52:32,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:52:32,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:52:32,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:52:32,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:52:32,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:52:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:52:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 905 proven. 363 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:52:37,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:52:37,459 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:52:37,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:52:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:52:37,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 2215 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:52:37,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:52:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 13:52:39,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:52:39,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2019-09-07 13:52:39,239 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:52:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:52:39,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:52:39,239 INFO L87 Difference]: Start difference. First operand 150356 states and 179777 transitions. Second operand 11 states. [2019-09-07 13:52:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:52:58,481 INFO L93 Difference]: Finished difference Result 301786 states and 367499 transitions. [2019-09-07 13:52:58,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-07 13:52:58,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1687 [2019-09-07 13:52:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:52:58,906 INFO L225 Difference]: With dead ends: 301786 [2019-09-07 13:52:58,906 INFO L226 Difference]: Without dead ends: 152270 [2019-09-07 13:52:59,094 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1797 GetRequests, 1738 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=2932, Unknown=0, NotChecked=0, Total=3660 [2019-09-07 13:52:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152270 states. [2019-09-07 13:53:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152270 to 151964. [2019-09-07 13:53:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151964 states. [2019-09-07 13:53:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151964 states to 151964 states and 174895 transitions. [2019-09-07 13:53:01,329 INFO L78 Accepts]: Start accepts. Automaton has 151964 states and 174895 transitions. Word has length 1687 [2019-09-07 13:53:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:53:01,329 INFO L475 AbstractCegarLoop]: Abstraction has 151964 states and 174895 transitions. [2019-09-07 13:53:01,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:53:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 151964 states and 174895 transitions. [2019-09-07 13:53:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5851 [2019-09-07 13:53:01,735 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:53:01,738 INFO L399 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 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, 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, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 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, 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, 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, 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, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:53:01,739 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:53:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:53:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash -651796789, now seen corresponding path program 1 times [2019-09-07 13:53:01,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:53:01,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:53:01,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:53:01,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:53:01,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:53:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:53:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 28519 backedges. 5168 proven. 4746 refuted. 0 times theorem prover too weak. 18605 trivial. 0 not checked. [2019-09-07 13:53:17,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:53:17,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:53:17,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:53:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:53:18,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 7549 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:53:18,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:53:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 28519 backedges. 6246 proven. 2 refuted. 0 times theorem prover too weak. 22271 trivial. 0 not checked. [2019-09-07 13:53:29,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:53:29,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:53:29,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:53:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:53:29,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:53:29,211 INFO L87 Difference]: Start difference. First operand 151964 states and 174895 transitions. Second operand 13 states. [2019-09-07 13:53:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:53:54,037 INFO L93 Difference]: Finished difference Result 323100 states and 372474 transitions. [2019-09-07 13:53:54,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-09-07 13:53:54,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 5850 [2019-09-07 13:53:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:53:54,891 INFO L225 Difference]: With dead ends: 323100 [2019-09-07 13:53:54,891 INFO L226 Difference]: Without dead ends: 169445 [2019-09-07 13:53:55,031 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5989 GetRequests, 5909 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1078, Invalid=5402, Unknown=0, NotChecked=0, Total=6480 [2019-09-07 13:53:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169445 states. [2019-09-07 13:53:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169445 to 164470. [2019-09-07 13:53:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164470 states. [2019-09-07 13:53:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164470 states to 164470 states and 181315 transitions. [2019-09-07 13:53:56,880 INFO L78 Accepts]: Start accepts. Automaton has 164470 states and 181315 transitions. Word has length 5850 [2019-09-07 13:53:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:53:56,881 INFO L475 AbstractCegarLoop]: Abstraction has 164470 states and 181315 transitions. [2019-09-07 13:53:56,881 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:53:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 164470 states and 181315 transitions. [2019-09-07 13:53:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4870 [2019-09-07 13:53:57,234 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:53:57,236 INFO L399 BasicCegarLoop]: trace histogram [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, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 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, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:53:57,236 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:53:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:53:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1000728773, now seen corresponding path program 1 times [2019-09-07 13:53:57,237 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:53:57,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:53:57,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:53:57,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:53:57,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:53:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:54:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18651 backedges. 4157 proven. 747 refuted. 0 times theorem prover too weak. 13747 trivial. 0 not checked. [2019-09-07 13:54:08,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:54:08,433 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:54:08,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:54:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:54:09,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 6248 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:54:09,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:54:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18651 backedges. 5199 proven. 2 refuted. 0 times theorem prover too weak. 13450 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:54:17,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:54:17,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 13:54:17,141 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 13:54:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 13:54:17,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:54:17,141 INFO L87 Difference]: Start difference. First operand 164470 states and 181315 transitions. Second operand 15 states. [2019-09-07 13:54:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:54:55,352 INFO L93 Difference]: Finished difference Result 334079 states and 366965 transitions. [2019-09-07 13:54:55,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-09-07 13:54:55,353 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 4869 [2019-09-07 13:54:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:54:55,637 INFO L225 Difference]: With dead ends: 334079 [2019-09-07 13:54:55,638 INFO L226 Difference]: Without dead ends: 155752 [2019-09-07 13:54:55,783 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5052 GetRequests, 4948 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4048 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1555, Invalid=9365, Unknown=0, NotChecked=0, Total=10920 [2019-09-07 13:54:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155752 states. [2019-09-07 13:54:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155752 to 148892. [2019-09-07 13:54:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148892 states. [2019-09-07 13:54:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148892 states to 148892 states and 155624 transitions. [2019-09-07 13:54:57,319 INFO L78 Accepts]: Start accepts. Automaton has 148892 states and 155624 transitions. Word has length 4869 [2019-09-07 13:54:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:54:57,320 INFO L475 AbstractCegarLoop]: Abstraction has 148892 states and 155624 transitions. [2019-09-07 13:54:57,320 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 13:54:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 148892 states and 155624 transitions. [2019-09-07 13:54:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5490 [2019-09-07 13:54:57,662 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:54:57,664 INFO L399 BasicCegarLoop]: trace histogram [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, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 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, 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, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:54:57,665 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:54:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:54:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash -682906088, now seen corresponding path program 1 times [2019-09-07 13:54:57,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:54:57,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:54:57,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:54:57,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:54:57,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:55:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:55:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 26494 backedges. 5090 proven. 3277 refuted. 0 times theorem prover too weak. 18127 trivial. 0 not checked. [2019-09-07 13:55:23,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:55:23,619 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:55:23,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:55:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:55:25,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 7062 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:55:25,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:55:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 26494 backedges. 11729 proven. 2 refuted. 0 times theorem prover too weak. 14763 trivial. 0 not checked. [2019-09-07 13:55:34,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:55:34,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2019-09-07 13:55:34,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 13:55:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 13:55:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2019-09-07 13:55:34,330 INFO L87 Difference]: Start difference. First operand 148892 states and 155624 transitions. Second operand 21 states. [2019-09-07 13:55:35,927 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-07 13:55:37,648 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-07 13:55:38,309 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-07 13:55:39,029 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-07 13:55:39,637 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-07 13:55:40,088 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2019-09-07 13:55:42,597 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2019-09-07 13:55:43,456 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-07 13:55:44,964 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-07 13:55:48,856 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-07 13:55:50,340 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2019-09-07 13:55:51,292 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-07 13:55:53,769 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2019-09-07 13:55:54,113 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-07 13:55:57,626 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 13:55:57,906 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 13:55:58,170 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-07 13:56:01,383 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-07 13:56:02,196 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-09-07 13:56:02,479 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-07 13:56:02,654 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-07 13:56:04,811 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 13:56:05,102 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-09-07 13:56:05,537 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2019-09-07 13:56:06,270 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-07 13:56:06,876 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-07 13:56:07,352 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-07 13:56:07,892 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-07 13:56:08,472 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-07 13:56:08,725 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2019-09-07 13:56:08,896 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-07 13:56:09,039 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-07 13:56:09,652 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 13:56:10,435 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 13:56:11,052 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 13:56:11,691 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-09-07 13:56:11,876 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-07 13:56:12,248 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-07 13:56:12,591 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-07 13:56:13,086 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-07 13:56:13,337 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2019-09-07 13:56:13,593 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-09-07 13:56:13,832 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-07 13:56:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:56:14,767 INFO L93 Difference]: Finished difference Result 281067 states and 296402 transitions. [2019-09-07 13:56:14,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-09-07 13:56:14,767 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 5489 [2019-09-07 13:56:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:56:15,048 INFO L225 Difference]: With dead ends: 281067 [2019-09-07 13:56:15,048 INFO L226 Difference]: Without dead ends: 149700 [2019-09-07 13:56:15,179 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5659 GetRequests, 5541 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5148 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2295, Invalid=10361, Unknown=0, NotChecked=0, Total=12656 [2019-09-07 13:56:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149700 states. [2019-09-07 13:56:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149700 to 148054. [2019-09-07 13:56:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148054 states. [2019-09-07 13:56:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148054 states to 148054 states and 153589 transitions. [2019-09-07 13:56:20,643 INFO L78 Accepts]: Start accepts. Automaton has 148054 states and 153589 transitions. Word has length 5489 [2019-09-07 13:56:20,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:56:20,644 INFO L475 AbstractCegarLoop]: Abstraction has 148054 states and 153589 transitions. [2019-09-07 13:56:20,645 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 13:56:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 148054 states and 153589 transitions. [2019-09-07 13:56:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6332 [2019-09-07 13:56:21,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:56:21,009 INFO L399 BasicCegarLoop]: trace histogram [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, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 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, 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, 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, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:56:21,010 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:56:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:56:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1740844074, now seen corresponding path program 1 times [2019-09-07 13:56:21,012 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:56:21,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:56:21,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:56:21,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:56:21,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:56:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:56:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 31435 backedges. 5831 proven. 1006 refuted. 0 times theorem prover too weak. 24598 trivial. 0 not checked. [2019-09-07 13:56:35,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:56:35,188 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:56:35,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:56:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:56:36,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 8023 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:56:36,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:56:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 31435 backedges. 10796 proven. 2 refuted. 0 times theorem prover too weak. 20637 trivial. 0 not checked. [2019-09-07 13:56:48,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:56:48,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 13:56:48,510 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:56:48,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:56:48,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:56:48,511 INFO L87 Difference]: Start difference. First operand 148054 states and 153589 transitions. Second operand 11 states. [2019-09-07 13:57:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:00,770 INFO L93 Difference]: Finished difference Result 308233 states and 319711 transitions. [2019-09-07 13:57:00,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 13:57:00,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 6331 [2019-09-07 13:57:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:01,033 INFO L225 Difference]: With dead ends: 308233 [2019-09-07 13:57:01,033 INFO L226 Difference]: Without dead ends: 161019 [2019-09-07 13:57:01,162 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6366 GetRequests, 6343 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2019-09-07 13:57:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161019 states. [2019-09-07 13:57:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161019 to 144445. [2019-09-07 13:57:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144445 states. [2019-09-07 13:57:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144445 states to 144445 states and 147558 transitions. [2019-09-07 13:57:02,605 INFO L78 Accepts]: Start accepts. Automaton has 144445 states and 147558 transitions. Word has length 6331 [2019-09-07 13:57:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:02,606 INFO L475 AbstractCegarLoop]: Abstraction has 144445 states and 147558 transitions. [2019-09-07 13:57:02,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:57:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 144445 states and 147558 transitions. [2019-09-07 13:57:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5813 [2019-09-07 13:57:02,900 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:02,902 INFO L399 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 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, 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, 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, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:57:02,903 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:02,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1814228524, now seen corresponding path program 1 times [2019-09-07 13:57:02,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:02,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:02,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:02,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:02,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27909 backedges. 6013 proven. 1608 refuted. 0 times theorem prover too weak. 20288 trivial. 0 not checked. [2019-09-07 13:57:17,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:57:17,923 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:57:17,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:19,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 7525 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:57:19,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:57:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 27909 backedges. 11477 proven. 2 refuted. 0 times theorem prover too weak. 16430 trivial. 0 not checked. [2019-09-07 13:57:29,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:57:29,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13 [2019-09-07 13:57:29,445 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:57:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:57:29,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:57:29,445 INFO L87 Difference]: Start difference. First operand 144445 states and 147558 transitions. Second operand 13 states. [2019-09-07 13:57:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:47,736 INFO L93 Difference]: Finished difference Result 323058 states and 331678 transitions. [2019-09-07 13:57:47,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 13:57:47,736 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 5812 [2019-09-07 13:57:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:48,082 INFO L225 Difference]: With dead ends: 323058 [2019-09-07 13:57:48,082 INFO L226 Difference]: Without dead ends: 191141 [2019-09-07 13:57:48,183 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5875 GetRequests, 5835 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2019-09-07 13:57:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191141 states. [2019-09-07 13:57:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191141 to 187714. [2019-09-07 13:57:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187714 states. [2019-09-07 13:57:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187714 states to 187714 states and 192765 transitions. [2019-09-07 13:57:50,024 INFO L78 Accepts]: Start accepts. Automaton has 187714 states and 192765 transitions. Word has length 5812 [2019-09-07 13:57:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:50,025 INFO L475 AbstractCegarLoop]: Abstraction has 187714 states and 192765 transitions. [2019-09-07 13:57:50,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:57:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 187714 states and 192765 transitions. [2019-09-07 13:57:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6156 [2019-09-07 13:57:53,787 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:53,790 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 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, 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, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 11, 11, 11, 11, 11, 11, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:57:53,790 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:53,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1980951134, now seen corresponding path program 1 times [2019-09-07 13:57:53,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:53,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:53,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:53,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:53,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:58:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 32104 backedges. 6446 proven. 7303 refuted. 0 times theorem prover too weak. 18355 trivial. 0 not checked. [2019-09-07 13:58:12,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:58:12,263 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:58:12,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:58:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:58:13,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 7825 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-07 13:58:13,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:58:13,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:58:13,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:58:13,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:58:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32104 backedges. 14875 proven. 2 refuted. 0 times theorem prover too weak. 17227 trivial. 0 not checked. [2019-09-07 13:58:27,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:58:27,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2019-09-07 13:58:27,693 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 13:58:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 13:58:27,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-09-07 13:58:27,694 INFO L87 Difference]: Start difference. First operand 187714 states and 192765 transitions. Second operand 17 states. [2019-09-07 13:59:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:59:16,083 INFO L93 Difference]: Finished difference Result 372295 states and 382634 transitions. [2019-09-07 13:59:16,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2019-09-07 13:59:16,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 6155 [2019-09-07 13:59:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:59:16,413 INFO L225 Difference]: With dead ends: 372295 [2019-09-07 13:59:16,413 INFO L226 Difference]: Without dead ends: 197971 [2019-09-07 13:59:16,542 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6493 GetRequests, 6308 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14588 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=4195, Invalid=30587, Unknown=0, NotChecked=0, Total=34782 [2019-09-07 13:59:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197971 states. [2019-09-07 13:59:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197971 to 194488. [2019-09-07 13:59:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194488 states. [2019-09-07 13:59:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194488 states to 194488 states and 199092 transitions. [2019-09-07 13:59:18,336 INFO L78 Accepts]: Start accepts. Automaton has 194488 states and 199092 transitions. Word has length 6155 [2019-09-07 13:59:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:59:18,337 INFO L475 AbstractCegarLoop]: Abstraction has 194488 states and 199092 transitions. [2019-09-07 13:59:18,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 13:59:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 194488 states and 199092 transitions. [2019-09-07 13:59:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6486 [2019-09-07 13:59:22,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:59:22,740 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:59:22,741 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:59:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:59:22,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1653043940, now seen corresponding path program 1 times [2019-09-07 13:59:22,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:59:22,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:59:22,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:59:22,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:59:22,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:59:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:59:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 33971 backedges. 7962 proven. 5710 refuted. 0 times theorem prover too weak. 20299 trivial. 0 not checked. [2019-09-07 13:59:40,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:59:40,539 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:59:40,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:59:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:59:42,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 8192 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:59:42,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:59:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33971 backedges. 20634 proven. 5 refuted. 0 times theorem prover too weak. 13332 trivial. 0 not checked. [2019-09-07 13:59:55,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:59:55,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:59:55,328 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:59:55,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:59:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:59:55,328 INFO L87 Difference]: Start difference. First operand 194488 states and 199092 transitions. Second operand 13 states. [2019-09-07 14:00:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:00:28,514 INFO L93 Difference]: Finished difference Result 425955 states and 435781 transitions. [2019-09-07 14:00:28,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-09-07 14:00:28,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 6485 [2019-09-07 14:00:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:00:29,021 INFO L225 Difference]: With dead ends: 425955 [2019-09-07 14:00:29,022 INFO L226 Difference]: Without dead ends: 244875 [2019-09-07 14:00:29,207 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6630 GetRequests, 6552 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=968, Invalid=5352, Unknown=0, NotChecked=0, Total=6320 [2019-09-07 14:00:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244875 states. [2019-09-07 14:00:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244875 to 235532. [2019-09-07 14:00:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235532 states. [2019-09-07 14:00:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235532 states to 235532 states and 240231 transitions. [2019-09-07 14:00:37,075 INFO L78 Accepts]: Start accepts. Automaton has 235532 states and 240231 transitions. Word has length 6485 [2019-09-07 14:00:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:00:37,077 INFO L475 AbstractCegarLoop]: Abstraction has 235532 states and 240231 transitions. [2019-09-07 14:00:37,077 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:00:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 235532 states and 240231 transitions. [2019-09-07 14:00:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7068 [2019-09-07 14:00:37,672 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:00:37,675 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 14, 14, 14, 14, 14, 14, 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, 12, 12, 12, 12, 12, 12, 12, 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, 11, 11, 11, 11, 11, 11, 11, 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, 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, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:00:37,675 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:00:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:00:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash -671750351, now seen corresponding path program 1 times [2019-09-07 14:00:37,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:00:37,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:00:37,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:37,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:00:37,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 36503 backedges. 6794 proven. 4762 refuted. 0 times theorem prover too weak. 24947 trivial. 0 not checked. [2019-09-07 14:01:14,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:01:14,405 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:01:14,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:16,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 8761 conjuncts, 71 conjunts are in the unsatisfiable core [2019-09-07 14:01:16,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:01:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 36503 backedges. 3725 proven. 0 refuted. 0 times theorem prover too weak. 32778 trivial. 0 not checked. [2019-09-07 14:01:39,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:01:39,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 20 [2019-09-07 14:01:39,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-07 14:01:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-07 14:01:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-09-07 14:01:39,593 INFO L87 Difference]: Start difference. First operand 235532 states and 240231 transitions. Second operand 20 states. [2019-09-07 14:01:40,230 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-07 14:01:40,438 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-07 14:01:43,432 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-07 14:01:43,952 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-07 14:01:45,106 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-07 14:01:49,300 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2019-09-07 14:01:50,511 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-07 14:01:53,266 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2019-09-07 14:01:53,552 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2019-09-07 14:01:54,088 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-07 14:01:55,823 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-07 14:01:56,339 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-07 14:01:56,543 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 14:01:57,894 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2019-09-07 14:01:58,157 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-07 14:01:58,322 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-07 14:01:58,692 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2019-09-07 14:01:58,836 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-07 14:01:59,152 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2019-09-07 14:01:59,311 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2019-09-07 14:01:59,488 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2019-09-07 14:01:59,735 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-09-07 14:01:59,968 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2019-09-07 14:02:00,293 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-07 14:02:01,001 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-07 14:02:01,845 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:02:02,390 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2019-09-07 14:02:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:03,454 INFO L93 Difference]: Finished difference Result 434647 states and 443138 transitions. [2019-09-07 14:02:03,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2019-09-07 14:02:03,454 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 7067 [2019-09-07 14:02:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:03,812 INFO L225 Difference]: With dead ends: 434647 [2019-09-07 14:02:03,812 INFO L226 Difference]: Without dead ends: 207502 [2019-09-07 14:02:04,002 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7178 GetRequests, 7100 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1202, Invalid=4960, Unknown=0, NotChecked=0, Total=6162 [2019-09-07 14:02:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207502 states. [2019-09-07 14:02:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207502 to 170360. [2019-09-07 14:02:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170360 states. [2019-09-07 14:02:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170360 states to 170360 states and 172223 transitions. [2019-09-07 14:02:06,401 INFO L78 Accepts]: Start accepts. Automaton has 170360 states and 172223 transitions. Word has length 7067 [2019-09-07 14:02:06,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:06,403 INFO L475 AbstractCegarLoop]: Abstraction has 170360 states and 172223 transitions. [2019-09-07 14:02:06,403 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-07 14:02:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 170360 states and 172223 transitions. [2019-09-07 14:02:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6961 [2019-09-07 14:02:06,761 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:06,763 INFO L399 BasicCegarLoop]: trace histogram [18, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:02:06,763 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash 915234295, now seen corresponding path program 1 times [2019-09-07 14:02:06,765 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:06,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:06,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:06,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:06,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat