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/Problem06_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 15:06:54,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 15:06:54,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 15:06:54,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 15:06:54,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 15:06:54,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 15:06:54,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 15:06:54,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 15:06:54,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 15:06:54,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 15:06:54,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 15:06:54,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 15:06:54,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 15:06:54,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 15:06:54,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 15:06:54,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 15:06:54,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 15:06:54,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 15:06:54,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 15:06:54,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 15:06:54,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 15:06:54,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 15:06:54,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 15:06:54,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 15:06:54,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 15:06:54,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 15:06:54,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 15:06:54,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 15:06:54,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 15:06:54,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 15:06:54,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 15:06:54,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 15:06:54,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 15:06:54,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 15:06:54,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 15:06:54,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 15:06:54,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 15:06:54,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 15:06:54,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 15:06:54,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 15:06:54,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 15:06:54,304 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 15:06:54,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 15:06:54,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 15:06:54,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 15:06:54,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 15:06:54,321 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 15:06:54,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 15:06:54,322 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 15:06:54,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 15:06:54,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 15:06:54,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 15:06:54,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 15:06:54,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 15:06:54,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 15:06:54,323 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 15:06:54,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 15:06:54,324 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 15:06:54,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 15:06:54,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 15:06:54,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 15:06:54,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 15:06:54,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 15:06:54,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 15:06:54,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 15:06:54,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 15:06:54,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 15:06:54,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 15:06:54,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 15:06:54,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 15:06:54,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 15:06:54,354 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 15:06:54,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 15:06:54,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 15:06:54,371 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 15:06:54,372 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 15:06:54,372 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label10.c [2019-09-07 15:06:54,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ea49cb4/55c114761ed64e328655ed331087b3f8/FLAG637e43427 [2019-09-07 15:06:55,360 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 15:06:55,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label10.c [2019-09-07 15:06:55,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ea49cb4/55c114761ed64e328655ed331087b3f8/FLAG637e43427 [2019-09-07 15:06:55,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ea49cb4/55c114761ed64e328655ed331087b3f8 [2019-09-07 15:06:55,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 15:06:55,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 15:06:55,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 15:06:55,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 15:06:55,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 15:06:55,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:06:55" (1/1) ... [2019-09-07 15:06:55,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f08c235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:55, skipping insertion in model container [2019-09-07 15:06:55,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:06:55" (1/1) ... [2019-09-07 15:06:55,831 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 15:06:56,086 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 15:06:58,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 15:06:58,178 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 15:06:59,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 15:06:59,276 INFO L192 MainTranslator]: Completed translation [2019-09-07 15:06:59,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59 WrapperNode [2019-09-07 15:06:59,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 15:06:59,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 15:06:59,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 15:06:59,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 15:06:59,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (1/1) ... [2019-09-07 15:06:59,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 15:06:59,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 15:06:59,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 15:06:59,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 15:06:59,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (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 15:06:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 15:06:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 15:06:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 15:06:59,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 15:06:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 15:06:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 15:06:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 15:06:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 15:06:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 15:06:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 15:06:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 15:06:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 15:06:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 15:06:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 15:06:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 15:06:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 15:06:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 15:06:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 15:06:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 15:07:06,795 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 15:07:06,795 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 15:07:06,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:07:06 BoogieIcfgContainer [2019-09-07 15:07:06,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 15:07:06,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 15:07:06,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 15:07:06,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 15:07:06,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:06:55" (1/3) ... [2019-09-07 15:07:06,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30893a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:07:06, skipping insertion in model container [2019-09-07 15:07:06,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:06:59" (2/3) ... [2019-09-07 15:07:06,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30893a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:07:06, skipping insertion in model container [2019-09-07 15:07:06,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:07:06" (3/3) ... [2019-09-07 15:07:06,818 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label10.c [2019-09-07 15:07:06,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 15:07:06,836 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 15:07:06,850 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 15:07:06,900 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 15:07:06,901 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 15:07:06,901 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 15:07:06,901 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 15:07:06,901 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 15:07:06,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 15:07:06,901 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 15:07:06,902 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 15:07:06,902 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 15:07:06,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2019-09-07 15:07:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2019-09-07 15:07:07,010 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:07:07,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:07,015 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:07:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:07:07,022 INFO L82 PathProgramCache]: Analyzing trace with hash 752382048, now seen corresponding path program 1 times [2019-09-07 15:07:07,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:07:07,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:07:07,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:07,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:07:07,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:09,761 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 15:07:09,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:07:09,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 15:07:09,772 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 15:07:09,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 15:07:09,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 15:07:09,789 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 3 states. [2019-09-07 15:07:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:07:16,271 INFO L93 Difference]: Finished difference Result 3730 states and 6979 transitions. [2019-09-07 15:07:16,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 15:07:16,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 957 [2019-09-07 15:07:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:07:16,322 INFO L225 Difference]: With dead ends: 3730 [2019-09-07 15:07:16,322 INFO L226 Difference]: Without dead ends: 2353 [2019-09-07 15:07:16,334 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 15:07:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2019-09-07 15:07:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2331. [2019-09-07 15:07:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2019-09-07 15:07:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 4080 transitions. [2019-09-07 15:07:16,525 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 4080 transitions. Word has length 957 [2019-09-07 15:07:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:07:16,529 INFO L475 AbstractCegarLoop]: Abstraction has 2331 states and 4080 transitions. [2019-09-07 15:07:16,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 15:07:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 4080 transitions. [2019-09-07 15:07:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2019-09-07 15:07:16,562 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:07:16,563 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:16,563 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:07:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:07:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash 594843364, now seen corresponding path program 1 times [2019-09-07 15:07:16,564 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:07:16,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:07:16,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:16,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:07:16,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:07:19,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:07:19,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 15:07:19,073 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 15:07:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 15:07:19,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 15:07:19,074 INFO L87 Difference]: Start difference. First operand 2331 states and 4080 transitions. Second operand 4 states. [2019-09-07 15:07:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:07:30,565 INFO L93 Difference]: Finished difference Result 8862 states and 15849 transitions. [2019-09-07 15:07:30,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 15:07:30,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 985 [2019-09-07 15:07:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:07:30,611 INFO L225 Difference]: With dead ends: 8862 [2019-09-07 15:07:30,611 INFO L226 Difference]: Without dead ends: 6537 [2019-09-07 15:07:30,621 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 15:07:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6537 states. [2019-09-07 15:07:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6537 to 6447. [2019-09-07 15:07:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6447 states. [2019-09-07 15:07:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 10589 transitions. [2019-09-07 15:07:30,808 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 10589 transitions. Word has length 985 [2019-09-07 15:07:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:07:30,810 INFO L475 AbstractCegarLoop]: Abstraction has 6447 states and 10589 transitions. [2019-09-07 15:07:30,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 15:07:30,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 10589 transitions. [2019-09-07 15:07:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2019-09-07 15:07:30,850 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:07:30,853 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:30,854 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:07:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:07:30,855 INFO L82 PathProgramCache]: Analyzing trace with hash 770419402, now seen corresponding path program 1 times [2019-09-07 15:07:30,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:07:30,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:07:30,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:30,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:07:30,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:07:31,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 15:07:31,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 15:07:31,839 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 15:07:31,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 15:07:31,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 15:07:31,840 INFO L87 Difference]: Start difference. First operand 6447 states and 10589 transitions. Second operand 6 states. [2019-09-07 15:07:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:07:40,245 INFO L93 Difference]: Finished difference Result 16259 states and 27051 transitions. [2019-09-07 15:07:40,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 15:07:40,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 996 [2019-09-07 15:07:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:07:40,296 INFO L225 Difference]: With dead ends: 16259 [2019-09-07 15:07:40,296 INFO L226 Difference]: Without dead ends: 9818 [2019-09-07 15:07:40,317 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:07:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2019-09-07 15:07:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 9693. [2019-09-07 15:07:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9693 states. [2019-09-07 15:07:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9693 states to 9693 states and 14923 transitions. [2019-09-07 15:07:40,671 INFO L78 Accepts]: Start accepts. Automaton has 9693 states and 14923 transitions. Word has length 996 [2019-09-07 15:07:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:07:40,672 INFO L475 AbstractCegarLoop]: Abstraction has 9693 states and 14923 transitions. [2019-09-07 15:07:40,672 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 15:07:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9693 states and 14923 transitions. [2019-09-07 15:07:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2019-09-07 15:07:40,712 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:07:40,713 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:40,714 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:07:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:07:40,715 INFO L82 PathProgramCache]: Analyzing trace with hash 563122992, now seen corresponding path program 1 times [2019-09-07 15:07:40,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:07:40,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:07:40,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:40,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:07:40,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 15:07:42,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:07:42,138 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 15:07:42,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:07:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:42,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 15:07:42,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:07:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 15:07:43,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 15:07:43,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 15:07:43,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:07:43,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:07:43,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:07:43,556 INFO L87 Difference]: Start difference. First operand 9693 states and 14923 transitions. Second operand 9 states. [2019-09-07 15:07:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:07:53,953 INFO L93 Difference]: Finished difference Result 29650 states and 49532 transitions. [2019-09-07 15:07:53,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 15:07:53,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1000 [2019-09-07 15:07:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:07:54,083 INFO L225 Difference]: With dead ends: 29650 [2019-09-07 15:07:54,083 INFO L226 Difference]: Without dead ends: 19963 [2019-09-07 15:07:54,115 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 1003 SyntacticMatches, 0 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 15:07:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19963 states. [2019-09-07 15:07:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19963 to 19634. [2019-09-07 15:07:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19634 states. [2019-09-07 15:07:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19634 states to 19634 states and 31211 transitions. [2019-09-07 15:07:54,798 INFO L78 Accepts]: Start accepts. Automaton has 19634 states and 31211 transitions. Word has length 1000 [2019-09-07 15:07:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:07:54,799 INFO L475 AbstractCegarLoop]: Abstraction has 19634 states and 31211 transitions. [2019-09-07 15:07:54,799 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:07:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19634 states and 31211 transitions. [2019-09-07 15:07:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2019-09-07 15:07:54,890 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:07:54,891 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:54,891 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:07:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:07:54,892 INFO L82 PathProgramCache]: Analyzing trace with hash -598889719, now seen corresponding path program 1 times [2019-09-07 15:07:54,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:07:54,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:07:54,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:54,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:07:54,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:07:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 15:07:56,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:07:56,271 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 15:07:56,298 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 15:07:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:07:56,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 15:07:56,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:07:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 15:07:57,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:07:57,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 15:07:57,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:07:57,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:07:57,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:07:57,548 INFO L87 Difference]: Start difference. First operand 19634 states and 31211 transitions. Second operand 9 states. [2019-09-07 15:08:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:08:17,557 INFO L93 Difference]: Finished difference Result 80512 states and 157230 transitions. [2019-09-07 15:08:17,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-07 15:08:17,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1011 [2019-09-07 15:08:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:08:17,930 INFO L225 Difference]: With dead ends: 80512 [2019-09-07 15:08:17,930 INFO L226 Difference]: Without dead ends: 60884 [2019-09-07 15:08:18,038 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2019-09-07 15:08:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60884 states. [2019-09-07 15:08:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60884 to 60062. [2019-09-07 15:08:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60062 states. [2019-09-07 15:08:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60062 states to 60062 states and 96176 transitions. [2019-09-07 15:08:22,063 INFO L78 Accepts]: Start accepts. Automaton has 60062 states and 96176 transitions. Word has length 1011 [2019-09-07 15:08:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:08:22,064 INFO L475 AbstractCegarLoop]: Abstraction has 60062 states and 96176 transitions. [2019-09-07 15:08:22,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:08:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 60062 states and 96176 transitions. [2019-09-07 15:08:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2019-09-07 15:08:22,315 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:08:22,316 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:22,316 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:08:22,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:08:22,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1771841722, now seen corresponding path program 1 times [2019-09-07 15:08:22,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:08:22,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:08:22,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:08:22,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:08:22,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:08:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:08:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 15:08:24,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:08:24,184 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) [2019-09-07 15:08:24,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:08:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:08:24,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 2371 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:08:24,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:08:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 15:08:25,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:08:25,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 15:08:25,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 15:08:25,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 15:08:25,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 15:08:25,644 INFO L87 Difference]: Start difference. First operand 60062 states and 96176 transitions. Second operand 8 states. [2019-09-07 15:08:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:08:42,327 INFO L93 Difference]: Finished difference Result 142882 states and 253076 transitions. [2019-09-07 15:08:42,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 15:08:42,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1053 [2019-09-07 15:08:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:08:42,706 INFO L225 Difference]: With dead ends: 142882 [2019-09-07 15:08:42,706 INFO L226 Difference]: Without dead ends: 82826 [2019-09-07 15:08:42,841 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2019-09-07 15:08:42,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82826 states. [2019-09-07 15:08:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82826 to 82272. [2019-09-07 15:08:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82272 states. [2019-09-07 15:08:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82272 states to 82272 states and 129098 transitions. [2019-09-07 15:08:45,004 INFO L78 Accepts]: Start accepts. Automaton has 82272 states and 129098 transitions. Word has length 1053 [2019-09-07 15:08:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:08:45,005 INFO L475 AbstractCegarLoop]: Abstraction has 82272 states and 129098 transitions. [2019-09-07 15:08:45,005 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 15:08:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 82272 states and 129098 transitions. [2019-09-07 15:08:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2019-09-07 15:08:45,383 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:08:45,385 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:45,385 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:08:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:08:45,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1960494104, now seen corresponding path program 1 times [2019-09-07 15:08:45,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:08:45,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:08:45,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:08:45,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:08:45,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:08:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:08:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 174 proven. 34 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-09-07 15:08:47,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:08:47,045 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 15:08:47,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:08:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:08:47,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:08:47,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:08:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-09-07 15:08:50,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:08:50,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 15:08:50,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 15:08:50,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 15:08:50,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 15:08:50,146 INFO L87 Difference]: Start difference. First operand 82272 states and 129098 transitions. Second operand 9 states. [2019-09-07 15:09:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 15:09:34,728 INFO L93 Difference]: Finished difference Result 327141 states and 847062 transitions. [2019-09-07 15:09:34,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-07 15:09:34,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1126 [2019-09-07 15:09:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 15:09:36,543 INFO L225 Difference]: With dead ends: 327141 [2019-09-07 15:09:36,544 INFO L226 Difference]: Without dead ends: 244875 [2019-09-07 15:09:36,784 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1227 GetRequests, 1172 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=594, Invalid=2598, Unknown=0, NotChecked=0, Total=3192 [2019-09-07 15:09:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244875 states. [2019-09-07 15:09:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244875 to 239916. [2019-09-07 15:09:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239916 states. [2019-09-07 15:09:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239916 states to 239916 states and 408676 transitions. [2019-09-07 15:09:51,449 INFO L78 Accepts]: Start accepts. Automaton has 239916 states and 408676 transitions. Word has length 1126 [2019-09-07 15:09:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 15:09:51,449 INFO L475 AbstractCegarLoop]: Abstraction has 239916 states and 408676 transitions. [2019-09-07 15:09:51,450 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 15:09:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 239916 states and 408676 transitions. [2019-09-07 15:09:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2019-09-07 15:09:52,542 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 15:09:52,543 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 15:09:52,543 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 15:09:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 15:09:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1636020466, now seen corresponding path program 1 times [2019-09-07 15:09:52,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 15:09:52,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 15:09:52,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:09:52,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:09:52,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 15:09:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:09:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 219 proven. 81 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-07 15:09:54,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 15:09:54,537 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 15:09:54,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 15:09:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 15:09:55,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 15:09:55,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 15:09:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-09-07 15:09:59,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 15:09:59,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 15:09:59,396 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 15:09:59,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 15:09:59,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-09-07 15:09:59,396 INFO L87 Difference]: Start difference. First operand 239916 states and 408676 transitions. Second operand 14 states.