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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:38:31,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:38:31,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:38:31,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 13:38:31,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 13:38:31,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 13:38:31,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 13:38:31,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 13:38:31,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 13:38:31,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 13:38:31,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 13:38:31,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 13:38:31,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:38:31,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:38:31,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:38:31,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:38:31,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:38:31,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:38:31,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:38:31,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:38:31,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:38:31,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:38:31,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:38:31,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:38:31,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 13:38:31,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 13:38:31,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 13:38:31,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 13:38:31,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 13:38:31,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 13:38:31,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 13:38:31,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 13:38:31,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 13:38:31,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 13:38:31,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 13:38:31,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 13:38:31,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 13:38:31,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 13:38:31,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:38:31,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:38:31,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:38:31,158 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 13:38:31,172 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:38:31,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:38:31,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:38:31,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:38:31,174 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:38:31,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:38:31,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:38:31,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:38:31,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:38:31,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:38:31,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:38:31,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:38:31,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:38:31,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:38:31,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:38:31,176 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:38:31,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:38:31,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:38:31,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:38:31,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:38:31,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:38:31,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:38:31,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:38:31,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:38:31,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:38:31,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:38:31,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:38:31,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:38:31,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:38:31,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:38:31,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:38:31,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:38:31,224 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:38:31,225 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:38:31,226 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label02.c [2019-09-07 13:38:31,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55200a88/97c9b60aaa2148eba58ee3ea488262d8/FLAGbc98d5cb2 [2019-09-07 13:38:32,129 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:38:32,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label02.c [2019-09-07 13:38:32,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55200a88/97c9b60aaa2148eba58ee3ea488262d8/FLAGbc98d5cb2 [2019-09-07 13:38:32,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55200a88/97c9b60aaa2148eba58ee3ea488262d8 [2019-09-07 13:38:32,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:38:32,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:38:32,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:38:32,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:38:32,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:38:32,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:38:32" (1/1) ... [2019-09-07 13:38:32,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5061f25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:32, skipping insertion in model container [2019-09-07 13:38:32,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:38:32" (1/1) ... [2019-09-07 13:38:32,709 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:38:32,869 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:38:34,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:38:34,321 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:38:35,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:38:35,163 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:38:35,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35 WrapperNode [2019-09-07 13:38:35,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:38:35,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:38:35,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:38:35,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:38:35,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (1/1) ... [2019-09-07 13:38:35,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:38:35,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:38:35,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:38:35,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:38:35,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (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 13:38:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:38:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:38:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:38:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 13:38:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 13:38:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 13:38:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:38:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:38:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 13:38:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 13:38:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 13:38:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:38:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:38:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:38:35,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:38:35,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:38:35,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:38:40,224 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:38:40,225 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:38:40,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:38:40 BoogieIcfgContainer [2019-09-07 13:38:40,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:38:40,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:38:40,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:38:40,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:38:40,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:38:32" (1/3) ... [2019-09-07 13:38:40,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db209d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:38:40, skipping insertion in model container [2019-09-07 13:38:40,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:38:35" (2/3) ... [2019-09-07 13:38:40,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db209d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:38:40, skipping insertion in model container [2019-09-07 13:38:40,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:38:40" (3/3) ... [2019-09-07 13:38:40,244 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label02.c [2019-09-07 13:38:40,261 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:38:40,271 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:38:40,288 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:38:40,332 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:38:40,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:38:40,333 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:38:40,333 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:38:40,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:38:40,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:38:40,333 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:38:40,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:38:40,334 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:38:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 13:38:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2019-09-07 13:38:40,443 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:38:40,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:40,447 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:38:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:38:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1081539403, now seen corresponding path program 1 times [2019-09-07 13:38:40,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:38:40,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:38:40,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:40,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:38:40,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:38:42,619 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 13:38:42,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:38:42,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:38:42,629 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:38:42,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:38:42,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:38:42,643 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 13:38:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:38:47,218 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 13:38:47,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:38:47,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 814 [2019-09-07 13:38:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:38:47,291 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 13:38:47,292 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 13:38:47,310 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 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 13:38:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 13:38:47,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 13:38:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 13:38:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2992 transitions. [2019-09-07 13:38:47,532 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2992 transitions. Word has length 814 [2019-09-07 13:38:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:38:47,538 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 2992 transitions. [2019-09-07 13:38:47,538 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:38:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2992 transitions. [2019-09-07 13:38:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2019-09-07 13:38:47,651 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:38:47,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:47,652 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:38:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:38:47,654 INFO L82 PathProgramCache]: Analyzing trace with hash -219309222, now seen corresponding path program 1 times [2019-09-07 13:38:47,654 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:38:47,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:38:47,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:47,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:38:47,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:38:48,910 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 13:38:48,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:38:48,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:38:48,915 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:38:48,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:38:48,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:38:48,916 INFO L87 Difference]: Start difference. First operand 1676 states and 2992 transitions. Second operand 3 states. [2019-09-07 13:38:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:38:53,523 INFO L93 Difference]: Finished difference Result 5014 states and 9011 transitions. [2019-09-07 13:38:53,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:38:53,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 822 [2019-09-07 13:38:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:38:53,557 INFO L225 Difference]: With dead ends: 5014 [2019-09-07 13:38:53,557 INFO L226 Difference]: Without dead ends: 3344 [2019-09-07 13:38:53,562 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 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 13:38:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2019-09-07 13:38:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3344. [2019-09-07 13:38:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3344 states. [2019-09-07 13:38:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5630 transitions. [2019-09-07 13:38:53,669 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5630 transitions. Word has length 822 [2019-09-07 13:38:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:38:53,671 INFO L475 AbstractCegarLoop]: Abstraction has 3344 states and 5630 transitions. [2019-09-07 13:38:53,671 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:38:53,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5630 transitions. [2019-09-07 13:38:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2019-09-07 13:38:53,688 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:38:53,689 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:53,689 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:38:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:38:53,692 INFO L82 PathProgramCache]: Analyzing trace with hash -663329261, now seen corresponding path program 1 times [2019-09-07 13:38:53,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:38:53,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:38:53,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:53,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:38:53,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:38:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 65 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:38:54,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:38:54,513 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:38:54,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:38:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:38:55,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:38:55,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:38:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-07 13:38:55,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:38:55,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:38:55,919 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:38:55,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:38:55,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:38:55,922 INFO L87 Difference]: Start difference. First operand 3344 states and 5630 transitions. Second operand 9 states. [2019-09-07 13:39:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:39:09,350 INFO L93 Difference]: Finished difference Result 13994 states and 24284 transitions. [2019-09-07 13:39:09,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 13:39:09,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 885 [2019-09-07 13:39:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:39:09,423 INFO L225 Difference]: With dead ends: 13994 [2019-09-07 13:39:09,423 INFO L226 Difference]: Without dead ends: 10656 [2019-09-07 13:39:09,438 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 908 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 13:39:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2019-09-07 13:39:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 10489. [2019-09-07 13:39:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10489 states. [2019-09-07 13:39:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10489 states to 10489 states and 14884 transitions. [2019-09-07 13:39:09,823 INFO L78 Accepts]: Start accepts. Automaton has 10489 states and 14884 transitions. Word has length 885 [2019-09-07 13:39:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:39:09,823 INFO L475 AbstractCegarLoop]: Abstraction has 10489 states and 14884 transitions. [2019-09-07 13:39:09,824 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:39:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10489 states and 14884 transitions. [2019-09-07 13:39:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2019-09-07 13:39:09,870 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:39:09,870 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:39:09,871 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:39:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:39:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash 269474457, now seen corresponding path program 1 times [2019-09-07 13:39:09,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:39:09,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:39:09,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:39:09,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:39:09,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:39:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:39:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 83 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-07 13:39:10,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:39:10,787 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 13:39:10,809 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 13:39:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:39:11,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:39:11,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:39:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:39:11,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:39:11,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:39:11,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:39:11,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:39:12,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:39:12,000 INFO L87 Difference]: Start difference. First operand 10489 states and 14884 transitions. Second operand 9 states. [2019-09-07 13:39:20,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:39:20,809 INFO L93 Difference]: Finished difference Result 31543 states and 47347 transitions. [2019-09-07 13:39:20,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:39:20,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 902 [2019-09-07 13:39:20,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:39:20,921 INFO L225 Difference]: With dead ends: 31543 [2019-09-07 13:39:20,921 INFO L226 Difference]: Without dead ends: 21060 [2019-09-07 13:39:20,952 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 903 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:39:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21060 states. [2019-09-07 13:39:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21060 to 20894. [2019-09-07 13:39:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20894 states. [2019-09-07 13:39:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20894 states to 20894 states and 29832 transitions. [2019-09-07 13:39:21,540 INFO L78 Accepts]: Start accepts. Automaton has 20894 states and 29832 transitions. Word has length 902 [2019-09-07 13:39:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:39:21,541 INFO L475 AbstractCegarLoop]: Abstraction has 20894 states and 29832 transitions. [2019-09-07 13:39:21,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:39:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 20894 states and 29832 transitions. [2019-09-07 13:39:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2019-09-07 13:39:21,630 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:39:21,631 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:39:21,631 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:39:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:39:21,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1116416167, now seen corresponding path program 1 times [2019-09-07 13:39:21,632 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:39:21,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:39:21,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:39:21,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:39:21,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:39:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:39:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 171 proven. 122 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-07 13:39:22,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:39:22,778 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 13:39:22,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:39:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:39:23,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:39:23,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:39:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 13:39:24,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:39:24,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 13:39:24,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 13:39:24,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 13:39:24,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:39:24,018 INFO L87 Difference]: Start difference. First operand 20894 states and 29832 transitions. Second operand 14 states. [2019-09-07 13:40:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:40:10,648 INFO L93 Difference]: Finished difference Result 164511 states and 289627 transitions. [2019-09-07 13:40:10,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-07 13:40:10,648 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 988 [2019-09-07 13:40:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:40:11,480 INFO L225 Difference]: With dead ends: 164511 [2019-09-07 13:40:11,480 INFO L226 Difference]: Without dead ends: 143623 [2019-09-07 13:40:11,642 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 1038 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=789, Invalid=3501, Unknown=0, NotChecked=0, Total=4290 [2019-09-07 13:40:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143623 states. [2019-09-07 13:40:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143623 to 141897. [2019-09-07 13:40:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141897 states. [2019-09-07 13:40:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141897 states to 141897 states and 202735 transitions. [2019-09-07 13:40:19,332 INFO L78 Accepts]: Start accepts. Automaton has 141897 states and 202735 transitions. Word has length 988 [2019-09-07 13:40:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:40:19,332 INFO L475 AbstractCegarLoop]: Abstraction has 141897 states and 202735 transitions. [2019-09-07 13:40:19,333 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 13:40:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 141897 states and 202735 transitions. [2019-09-07 13:40:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2019-09-07 13:40:19,830 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:40:19,831 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:19,831 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:40:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:40:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1528354705, now seen corresponding path program 1 times [2019-09-07 13:40:19,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:40:19,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:40:19,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:40:19,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:40:19,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:40:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:40:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 272 proven. 229 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 13:40:21,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:40:21,517 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) [2019-09-07 13:40:21,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:40:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:40:22,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:40:22,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:40:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 433 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:40:22,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:40:22,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:40:22,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:40:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:40:22,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:40:22,817 INFO L87 Difference]: Start difference. First operand 141897 states and 202735 transitions. Second operand 13 states. [2019-09-07 13:40:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:40:49,885 INFO L93 Difference]: Finished difference Result 331126 states and 507499 transitions. [2019-09-07 13:40:49,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-07 13:40:49,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1088 [2019-09-07 13:40:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:40:50,798 INFO L225 Difference]: With dead ends: 331126 [2019-09-07 13:40:50,798 INFO L226 Difference]: Without dead ends: 190069 [2019-09-07 13:40:51,050 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1190 GetRequests, 1127 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 13:40:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190069 states. [2019-09-07 13:40:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190069 to 188549. [2019-09-07 13:40:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188549 states. [2019-09-07 13:40:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188549 states to 188549 states and 248811 transitions. [2019-09-07 13:40:58,698 INFO L78 Accepts]: Start accepts. Automaton has 188549 states and 248811 transitions. Word has length 1088 [2019-09-07 13:40:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:40:58,699 INFO L475 AbstractCegarLoop]: Abstraction has 188549 states and 248811 transitions. [2019-09-07 13:40:58,700 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:40:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 188549 states and 248811 transitions. [2019-09-07 13:40:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2019-09-07 13:40:59,060 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:40:59,061 INFO L399 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:40:59,062 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:40:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:40:59,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1295495114, now seen corresponding path program 1 times [2019-09-07 13:40:59,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:40:59,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:40:59,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:40:59,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:40:59,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:40:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:41:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 347 proven. 165 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-09-07 13:41:01,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:41:01,165 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 13:41:01,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:41:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:41:01,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:41:01,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:41:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 13:41:02,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:41:02,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:41:02,655 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:41:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:41:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:41:02,655 INFO L87 Difference]: Start difference. First operand 188549 states and 248811 transitions. Second operand 9 states. [2019-09-07 13:41:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:41:19,345 INFO L93 Difference]: Finished difference Result 387487 states and 532209 transitions. [2019-09-07 13:41:19,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 13:41:19,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1147 [2019-09-07 13:41:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:41:19,844 INFO L225 Difference]: With dead ends: 387487 [2019-09-07 13:41:19,844 INFO L226 Difference]: Without dead ends: 193367 [2019-09-07 13:41:20,076 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2019-09-07 13:41:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193367 states. [2019-09-07 13:41:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193367 to 185072. [2019-09-07 13:41:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185072 states. [2019-09-07 13:41:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185072 states to 185072 states and 211233 transitions. [2019-09-07 13:41:24,068 INFO L78 Accepts]: Start accepts. Automaton has 185072 states and 211233 transitions. Word has length 1147 [2019-09-07 13:41:24,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:41:24,070 INFO L475 AbstractCegarLoop]: Abstraction has 185072 states and 211233 transitions. [2019-09-07 13:41:24,070 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:41:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 185072 states and 211233 transitions. [2019-09-07 13:41:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2019-09-07 13:41:24,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:41:24,362 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:24,362 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:41:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:41:24,363 INFO L82 PathProgramCache]: Analyzing trace with hash 741841918, now seen corresponding path program 1 times [2019-09-07 13:41:24,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:41:24,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:41:24,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:41:24,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:41:24,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:41:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:41:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 685 proven. 479 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-07 13:41:29,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:41:29,763 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) [2019-09-07 13:41:29,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:41:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:41:30,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:41:30,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:41:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 1033 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 13:41:32,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:41:32,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:41:32,059 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:41:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:41:32,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:41:32,062 INFO L87 Difference]: Start difference. First operand 185072 states and 211233 transitions. Second operand 13 states. [2019-09-07 13:41:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:41:54,224 INFO L93 Difference]: Finished difference Result 369235 states and 419373 transitions. [2019-09-07 13:41:54,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-09-07 13:41:54,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1401 [2019-09-07 13:41:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:41:54,639 INFO L225 Difference]: With dead ends: 369235 [2019-09-07 13:41:54,639 INFO L226 Difference]: Without dead ends: 185003 [2019-09-07 13:41:54,851 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1457 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=960, Invalid=4590, Unknown=0, NotChecked=0, Total=5550 [2019-09-07 13:41:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185003 states. [2019-09-07 13:41:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185003 to 173627. [2019-09-07 13:41:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173627 states. [2019-09-07 13:41:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173627 states to 173627 states and 188392 transitions. [2019-09-07 13:41:57,668 INFO L78 Accepts]: Start accepts. Automaton has 173627 states and 188392 transitions. Word has length 1401 [2019-09-07 13:41:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:41:57,669 INFO L475 AbstractCegarLoop]: Abstraction has 173627 states and 188392 transitions. [2019-09-07 13:41:57,669 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:41:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 173627 states and 188392 transitions. [2019-09-07 13:41:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1614 [2019-09-07 13:41:57,823 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:41:57,824 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:57,824 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:41:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:41:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash 373980197, now seen corresponding path program 1 times [2019-09-07 13:41:57,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:41:57,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:41:57,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:41:57,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:41:57,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:41:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:42:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 806 proven. 298 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2019-09-07 13:42:03,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:42:03,712 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 13:42:03,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:42:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:42:04,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:42:04,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:42:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2019-09-07 13:42:08,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:42:08,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2019-09-07 13:42:08,104 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:42:08,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:42:08,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:42:08,105 INFO L87 Difference]: Start difference. First operand 173627 states and 188392 transitions. Second operand 11 states. [2019-09-07 13:42:08,291 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 13:42:10,773 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-07 13:42:12,119 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-07 13:42:12,288 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-07 13:42:12,925 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-07 13:42:13,540 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-09-07 13:42:15,115 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-07 13:42:17,350 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-07 13:42:17,915 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-09-07 13:42:26,149 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-07 13:42:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:42:28,250 INFO L93 Difference]: Finished difference Result 342273 states and 371752 transitions. [2019-09-07 13:42:28,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-07 13:42:28,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1613 [2019-09-07 13:42:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:42:28,592 INFO L225 Difference]: With dead ends: 342273 [2019-09-07 13:42:28,592 INFO L226 Difference]: Without dead ends: 172834 [2019-09-07 13:42:28,732 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1668 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=369, Invalid=1037, Unknown=0, NotChecked=0, Total=1406 [2019-09-07 13:42:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172834 states. [2019-09-07 13:42:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172834 to 171916. [2019-09-07 13:42:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171916 states. [2019-09-07 13:42:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171916 states to 171916 states and 183739 transitions. [2019-09-07 13:42:31,263 INFO L78 Accepts]: Start accepts. Automaton has 171916 states and 183739 transitions. Word has length 1613 [2019-09-07 13:42:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:42:31,263 INFO L475 AbstractCegarLoop]: Abstraction has 171916 states and 183739 transitions. [2019-09-07 13:42:31,264 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:42:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 171916 states and 183739 transitions. [2019-09-07 13:42:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2087 [2019-09-07 13:42:31,455 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:42:31,456 INFO L399 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:42:31,457 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:42:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:42:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1475144217, now seen corresponding path program 1 times [2019-09-07 13:42:31,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:42:31,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:42:31,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:42:31,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:42:31,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:42:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:42:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3656 backedges. 1603 proven. 925 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2019-09-07 13:42:41,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:42:41,834 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 13:42:41,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:42:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:42:42,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:42:42,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:42:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3656 backedges. 2074 proven. 2 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2019-09-07 13:42:43,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:42:43,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2019-09-07 13:42:43,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 13:42:43,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 13:42:43,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-09-07 13:42:43,922 INFO L87 Difference]: Start difference. First operand 171916 states and 183739 transitions. Second operand 21 states. [2019-09-07 13:42:44,251 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-07 13:42:44,392 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-07 13:42:44,660 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-07 13:42:44,841 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-07 13:42:45,368 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-07 13:42:45,901 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-07 13:42:47,094 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-07 13:42:47,605 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-07 13:42:47,972 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2019-09-07 13:42:48,410 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-07 13:42:48,583 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-07 13:42:48,729 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-07 13:42:49,207 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-09-07 13:42:49,883 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-07 13:42:50,621 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2019-09-07 13:42:51,714 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2019-09-07 13:42:52,130 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2019-09-07 13:42:52,856 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-07 13:42:53,715 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2019-09-07 13:42:54,489 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2019-09-07 13:42:58,203 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-07 13:42:58,836 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-07 13:43:00,859 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-07 13:43:01,204 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-07 13:43:01,600 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-07 13:43:02,782 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 13:43:03,705 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-07 13:43:04,032 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-07 13:43:04,698 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-09-07 13:43:06,207 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-07 13:43:06,499 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 13:43:07,030 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-07 13:43:07,848 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2019-09-07 13:43:08,156 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2019-09-07 13:43:08,745 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 13:43:09,008 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-07 13:43:09,318 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-07 13:43:10,827 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2019-09-07 13:43:11,047 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-07 13:43:11,421 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 13:43:12,066 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-07 13:43:13,858 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-07 13:43:14,082 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-07 13:43:14,259 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-07 13:43:14,490 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 13:43:15,684 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-09-07 13:43:15,878 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-07 13:43:16,330 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-07 13:43:16,812 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-07 13:43:17,100 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-07 13:43:17,580 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 13:43:18,287 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-07 13:43:19,698 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-07 13:43:19,918 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-07 13:43:20,113 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 13:43:21,297 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-09-07 13:43:21,607 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 13:43:21,805 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-07 13:43:21,966 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-07 13:43:22,450 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-07 13:43:22,619 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-07 13:43:22,842 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-07 13:43:23,166 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-07 13:43:24,173 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-07 13:43:24,543 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2019-09-07 13:43:24,735 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 13:43:25,295 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-07 13:43:25,627 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-07 13:43:25,760 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-07 13:43:26,216 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-07 13:43:26,929 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-07 13:43:27,061 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-07 13:43:27,304 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-07 13:43:27,571 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 13:43:28,313 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-07 13:43:28,561 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-07 13:43:28,727 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-07 13:43:29,222 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-09-07 13:43:29,442 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-07 13:43:30,007 WARN L188 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2019-09-07 13:43:30,273 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-07 13:43:30,855 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-09-07 13:43:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:43:32,038 INFO L93 Difference]: Finished difference Result 340344 states and 365396 transitions. [2019-09-07 13:43:32,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2019-09-07 13:43:32,038 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 2086 [2019-09-07 13:43:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:43:32,365 INFO L225 Difference]: With dead ends: 340344 [2019-09-07 13:43:32,366 INFO L226 Difference]: Without dead ends: 171740 [2019-09-07 13:43:32,501 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2359 GetRequests, 2196 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=4109, Invalid=22951, Unknown=0, NotChecked=0, Total=27060 [2019-09-07 13:43:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171740 states. [2019-09-07 13:43:34,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171740 to 166153. [2019-09-07 13:43:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166153 states. [2019-09-07 13:43:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166153 states to 166153 states and 175577 transitions. [2019-09-07 13:43:35,293 INFO L78 Accepts]: Start accepts. Automaton has 166153 states and 175577 transitions. Word has length 2086 [2019-09-07 13:43:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:43:35,294 INFO L475 AbstractCegarLoop]: Abstraction has 166153 states and 175577 transitions. [2019-09-07 13:43:35,294 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 13:43:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 166153 states and 175577 transitions. [2019-09-07 13:43:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2240 [2019-09-07 13:43:35,461 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:43:35,462 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:35,463 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:43:35,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:43:35,464 INFO L82 PathProgramCache]: Analyzing trace with hash 625745430, now seen corresponding path program 1 times [2019-09-07 13:43:35,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:43:35,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:43:35,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:43:35,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:43:35,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:43:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:43:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3488 backedges. 1723 proven. 734 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2019-09-07 13:43:39,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:43:39,519 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 13:43:39,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:43:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:43:40,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:43:40,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:43:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3488 backedges. 2326 proven. 7 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2019-09-07 13:43:44,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:43:44,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:43:44,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:43:44,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:43:44,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:43:44,857 INFO L87 Difference]: Start difference. First operand 166153 states and 175577 transitions. Second operand 9 states. [2019-09-07 13:43:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:43:54,521 INFO L93 Difference]: Finished difference Result 392141 states and 413578 transitions. [2019-09-07 13:43:54,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:43:54,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2239 [2019-09-07 13:43:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:43:55,352 INFO L225 Difference]: With dead ends: 392141 [2019-09-07 13:43:55,353 INFO L226 Difference]: Without dead ends: 232688 [2019-09-07 13:43:55,477 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2252 GetRequests, 2242 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:43:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232688 states. [2019-09-07 13:43:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232688 to 225936. [2019-09-07 13:43:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225936 states. [2019-09-07 13:43:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225936 states to 225936 states and 236676 transitions. [2019-09-07 13:43:58,512 INFO L78 Accepts]: Start accepts. Automaton has 225936 states and 236676 transitions. Word has length 2239 [2019-09-07 13:43:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:43:58,513 INFO L475 AbstractCegarLoop]: Abstraction has 225936 states and 236676 transitions. [2019-09-07 13:43:58,513 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:43:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 225936 states and 236676 transitions. [2019-09-07 13:43:58,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2333 [2019-09-07 13:43:58,711 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:43:58,712 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:58,712 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:43:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:43:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash -169901901, now seen corresponding path program 1 times [2019-09-07 13:43:58,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:43:58,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:43:58,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:43:58,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:43:58,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:43:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4819 backedges. 1527 proven. 1827 refuted. 0 times theorem prover too weak. 1465 trivial. 0 not checked. [2019-09-07 13:44:03,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:44:03,681 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 13:44:03,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:44:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:04,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:44:04,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:44:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4819 backedges. 2297 proven. 2 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2019-09-07 13:44:06,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:44:06,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 13:44:06,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:44:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:44:06,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:44:06,105 INFO L87 Difference]: Start difference. First operand 225936 states and 236676 transitions. Second operand 11 states. [2019-09-07 13:44:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:44:19,082 INFO L93 Difference]: Finished difference Result 467039 states and 489838 transitions. [2019-09-07 13:44:19,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 13:44:19,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2332 [2019-09-07 13:44:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:44:19,737 INFO L225 Difference]: With dead ends: 467039 [2019-09-07 13:44:19,737 INFO L226 Difference]: Without dead ends: 241943 [2019-09-07 13:44:20,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2363 GetRequests, 2343 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2019-09-07 13:44:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241943 states. [2019-09-07 13:44:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241943 to 241681. [2019-09-07 13:44:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241681 states. [2019-09-07 13:44:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241681 states to 241681 states and 250867 transitions. [2019-09-07 13:44:23,721 INFO L78 Accepts]: Start accepts. Automaton has 241681 states and 250867 transitions. Word has length 2332 [2019-09-07 13:44:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:44:23,722 INFO L475 AbstractCegarLoop]: Abstraction has 241681 states and 250867 transitions. [2019-09-07 13:44:23,722 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:44:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 241681 states and 250867 transitions. [2019-09-07 13:44:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2372 [2019-09-07 13:44:23,968 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:44:23,969 INFO L399 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:23,969 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:44:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:44:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1182572011, now seen corresponding path program 1 times [2019-09-07 13:44:23,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:44:23,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:44:23,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:44:23,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:44:23,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:44:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 2240 proven. 649 refuted. 0 times theorem prover too weak. 1676 trivial. 0 not checked. [2019-09-07 13:44:31,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:44:31,970 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 13:44:31,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:44:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:32,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:44:32,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:44:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4565 backedges. 3302 proven. 5 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2019-09-07 13:44:34,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:44:34,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 13:44:34,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:44:34,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:44:34,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:44:34,622 INFO L87 Difference]: Start difference. First operand 241681 states and 250867 transitions. Second operand 11 states. [2019-09-07 13:44:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:44:47,001 INFO L93 Difference]: Finished difference Result 464250 states and 482536 transitions. [2019-09-07 13:44:47,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 13:44:47,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2371 [2019-09-07 13:44:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:44:47,451 INFO L225 Difference]: With dead ends: 464250 [2019-09-07 13:44:47,451 INFO L226 Difference]: Without dead ends: 214150 [2019-09-07 13:44:47,689 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2404 GetRequests, 2383 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2019-09-07 13:44:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214150 states. [2019-09-07 13:44:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214150 to 212421. [2019-09-07 13:44:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212421 states. [2019-09-07 13:44:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212421 states to 212421 states and 218089 transitions. [2019-09-07 13:44:50,687 INFO L78 Accepts]: Start accepts. Automaton has 212421 states and 218089 transitions. Word has length 2371 [2019-09-07 13:44:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:44:50,689 INFO L475 AbstractCegarLoop]: Abstraction has 212421 states and 218089 transitions. [2019-09-07 13:44:50,689 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:44:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 212421 states and 218089 transitions. [2019-09-07 13:44:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2362 [2019-09-07 13:44:50,894 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:44:50,895 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:50,895 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:44:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:44:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash -902647889, now seen corresponding path program 1 times [2019-09-07 13:44:50,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:44:50,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:44:50,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:44:50,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:44:50,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:44:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 2064 proven. 717 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2019-09-07 13:44:58,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:44:58,300 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 13:44:58,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:44:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:58,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:44:58,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:45:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 2344 proven. 2 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2019-09-07 13:45:00,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:45:00,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 13:45:00,981 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 13:45:00,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 13:45:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:45:00,982 INFO L87 Difference]: Start difference. First operand 212421 states and 218089 transitions. Second operand 14 states. [2019-09-07 13:45:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:24,462 INFO L93 Difference]: Finished difference Result 421100 states and 432483 transitions. [2019-09-07 13:45:24,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-07 13:45:24,462 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2361 [2019-09-07 13:45:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:24,986 INFO L225 Difference]: With dead ends: 421100 [2019-09-07 13:45:24,987 INFO L226 Difference]: Without dead ends: 216280 [2019-09-07 13:45:25,217 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2475 GetRequests, 2412 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=784, Invalid=3376, Unknown=0, NotChecked=0, Total=4160 [2019-09-07 13:45:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216280 states. [2019-09-07 13:45:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216280 to 212719. [2019-09-07 13:45:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212719 states. [2019-09-07 13:45:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212719 states to 212719 states and 217700 transitions. [2019-09-07 13:45:28,371 INFO L78 Accepts]: Start accepts. Automaton has 212719 states and 217700 transitions. Word has length 2361 [2019-09-07 13:45:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:45:28,373 INFO L475 AbstractCegarLoop]: Abstraction has 212719 states and 217700 transitions. [2019-09-07 13:45:28,373 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 13:45:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 212719 states and 217700 transitions. [2019-09-07 13:45:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2558 [2019-09-07 13:45:28,626 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:45:28,627 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:28,627 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:45:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:45:28,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1999353745, now seen corresponding path program 1 times [2019-09-07 13:45:28,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:45:28,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:45:28,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:28,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:28,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3643 backedges. 1499 proven. 1061 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2019-09-07 13:45:35,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:45:35,635 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 13:45:35,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:36,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:45:36,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:45:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3643 backedges. 1731 proven. 0 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:45:39,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:45:39,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-09-07 13:45:39,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:45:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:45:39,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:45:39,208 INFO L87 Difference]: Start difference. First operand 212719 states and 217700 transitions. Second operand 8 states. [2019-09-07 13:45:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:48,218 INFO L93 Difference]: Finished difference Result 403769 states and 413745 transitions. [2019-09-07 13:45:48,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 13:45:48,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 2557 [2019-09-07 13:45:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:48,221 INFO L225 Difference]: With dead ends: 403769 [2019-09-07 13:45:48,221 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 13:45:48,926 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2581 GetRequests, 2570 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:45:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 13:45:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 13:45:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 13:45:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 13:45:48,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2557 [2019-09-07 13:45:48,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:45:48,930 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 13:45:48,930 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:45:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 13:45:48,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 13:45:48,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 13:45:55,931 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 1 [2019-09-07 13:46:18,899 WARN L188 SmtUtils]: Spent 21.28 s on a formula simplification. DAG size of input: 3248 DAG size of output: 2201 [2019-09-07 13:46:36,613 WARN L188 SmtUtils]: Spent 16.79 s on a formula simplification. DAG size of input: 3248 DAG size of output: 2201 [2019-09-07 13:47:13,427 WARN L188 SmtUtils]: Spent 35.43 s on a formula simplification. DAG size of input: 787 DAG size of output: 243 [2019-09-07 13:47:47,779 WARN L188 SmtUtils]: Spent 34.27 s on a formula simplification. DAG size of input: 787 DAG size of output: 243 [2019-09-07 13:48:21,220 WARN L188 SmtUtils]: Spent 33.39 s on a formula simplification. DAG size of input: 787 DAG size of output: 243 [2019-09-07 13:48:56,233 WARN L188 SmtUtils]: Spent 34.95 s on a formula simplification. DAG size of input: 787 DAG size of output: 243 [2019-09-07 13:49:31,247 WARN L188 SmtUtils]: Spent 34.98 s on a formula simplification. DAG size of input: 787 DAG size of output: 243 [2019-09-07 13:49:31,422 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2019-09-07 13:50:19,726 WARN L188 SmtUtils]: Spent 48.29 s on a formula simplification. DAG size of input: 1779 DAG size of output: 318