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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 14:12:51,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 14:12:51,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 14:12:51,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 14:12:51,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 14:12:51,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 14:12:51,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 14:12:51,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 14:12:51,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 14:12:51,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 14:12:51,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 14:12:51,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 14:12:51,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 14:12:51,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 14:12:51,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 14:12:51,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 14:12:51,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 14:12:51,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 14:12:51,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 14:12:51,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 14:12:51,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 14:12:51,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 14:12:51,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 14:12:51,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 14:12:51,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 14:12:51,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 14:12:51,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 14:12:51,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 14:12:51,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 14:12:51,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 14:12:51,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 14:12:51,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 14:12:51,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 14:12:51,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 14:12:51,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 14:12:51,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 14:12:51,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 14:12:51,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 14:12:51,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 14:12:51,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 14:12:51,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 14:12:51,112 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 14:12:51,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 14:12:51,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 14:12:51,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 14:12:51,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 14:12:51,139 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 14:12:51,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 14:12:51,139 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 14:12:51,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 14:12:51,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 14:12:51,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 14:12:51,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 14:12:51,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 14:12:51,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 14:12:51,140 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 14:12:51,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 14:12:51,141 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 14:12:51,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 14:12:51,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 14:12:51,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 14:12:51,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 14:12:51,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 14:12:51,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:12:51,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 14:12:51,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 14:12:51,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 14:12:51,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 14:12:51,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 14:12:51,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 14:12:51,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 14:12:51,181 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 14:12:51,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 14:12:51,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 14:12:51,198 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 14:12:51,198 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 14:12:51,199 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label55.c [2019-09-07 14:12:51,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02aa6ca44/4318bcb500a146af885064f472ecfe8e/FLAG07b0b4753 [2019-09-07 14:12:52,090 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 14:12:52,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label55.c [2019-09-07 14:12:52,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02aa6ca44/4318bcb500a146af885064f472ecfe8e/FLAG07b0b4753 [2019-09-07 14:12:52,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02aa6ca44/4318bcb500a146af885064f472ecfe8e [2019-09-07 14:12:52,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 14:12:52,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 14:12:52,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 14:12:52,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 14:12:52,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 14:12:52,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:12:52" (1/1) ... [2019-09-07 14:12:52,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a64957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:52, skipping insertion in model container [2019-09-07 14:12:52,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:12:52" (1/1) ... [2019-09-07 14:12:52,648 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 14:12:52,837 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 14:12:54,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:12:54,409 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 14:12:55,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:12:55,293 INFO L192 MainTranslator]: Completed translation [2019-09-07 14:12:55,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55 WrapperNode [2019-09-07 14:12:55,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 14:12:55,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 14:12:55,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 14:12:55,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 14:12:55,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (1/1) ... [2019-09-07 14:12:55,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 14:12:55,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 14:12:55,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 14:12:55,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 14:12:55,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (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 14:12:55,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 14:12:55,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 14:12:55,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 14:12:55,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 14:12:55,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 14:12:55,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 14:12:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 14:12:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 14:12:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 14:12:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 14:12:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 14:12:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 14:12:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 14:12:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 14:12:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 14:12:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 14:12:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 14:13:00,337 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 14:13:00,337 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 14:13:00,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:13:00 BoogieIcfgContainer [2019-09-07 14:13:00,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 14:13:00,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 14:13:00,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 14:13:00,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 14:13:00,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:12:52" (1/3) ... [2019-09-07 14:13:00,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783d50d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:13:00, skipping insertion in model container [2019-09-07 14:13:00,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:55" (2/3) ... [2019-09-07 14:13:00,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783d50d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:13:00, skipping insertion in model container [2019-09-07 14:13:00,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:13:00" (3/3) ... [2019-09-07 14:13:00,354 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label55.c [2019-09-07 14:13:00,367 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 14:13:00,377 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 14:13:00,396 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 14:13:00,444 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 14:13:00,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 14:13:00,445 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 14:13:00,445 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 14:13:00,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 14:13:00,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 14:13:00,445 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 14:13:00,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 14:13:00,446 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 14:13:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 14:13:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2019-09-07 14:13:00,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:00,543 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] [2019-09-07 14:13:00,545 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:00,552 INFO L82 PathProgramCache]: Analyzing trace with hash -14032741, now seen corresponding path program 1 times [2019-09-07 14:13:00,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:00,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:00,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:00,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:00,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:02,445 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 14:13:02,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:13:02,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:13:02,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:13:02,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:13:02,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:13:02,475 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 14:13:07,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:07,720 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 14:13:07,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:13:07,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 786 [2019-09-07 14:13:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:07,793 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 14:13:07,793 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 14:13:07,814 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 14:13:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 14:13:08,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 14:13:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 14:13:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3112 transitions. [2019-09-07 14:13:08,060 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3112 transitions. Word has length 786 [2019-09-07 14:13:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:08,064 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 3112 transitions. [2019-09-07 14:13:08,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:13:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3112 transitions. [2019-09-07 14:13:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2019-09-07 14:13:08,095 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:08,096 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 14:13:08,097 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1219040960, now seen corresponding path program 1 times [2019-09-07 14:13:08,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:08,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:08,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:08,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:08,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:08,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:13:08,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:13:08,698 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:13:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:13:08,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:13:08,699 INFO L87 Difference]: Start difference. First operand 1676 states and 3112 transitions. Second operand 6 states. [2019-09-07 14:13:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:15,279 INFO L93 Difference]: Finished difference Result 5104 states and 9511 transitions. [2019-09-07 14:13:15,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 14:13:15,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 795 [2019-09-07 14:13:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:15,301 INFO L225 Difference]: With dead ends: 5104 [2019-09-07 14:13:15,301 INFO L226 Difference]: Without dead ends: 3434 [2019-09-07 14:13:15,306 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 14:13:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-09-07 14:13:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3406. [2019-09-07 14:13:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3406 states. [2019-09-07 14:13:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5984 transitions. [2019-09-07 14:13:15,437 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5984 transitions. Word has length 795 [2019-09-07 14:13:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:15,438 INFO L475 AbstractCegarLoop]: Abstraction has 3406 states and 5984 transitions. [2019-09-07 14:13:15,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:13:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5984 transitions. [2019-09-07 14:13:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2019-09-07 14:13:15,454 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:15,455 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-09-07 14:13:15,455 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash 892579471, now seen corresponding path program 1 times [2019-09-07 14:13:15,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:15,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:15,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:15,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:15,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 14:13:16,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:16,141 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 14:13:16,177 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 14:13:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:16,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:13:16,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:17,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:13:17,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 14:13:17,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 14:13:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 14:13:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 14:13:17,034 INFO L87 Difference]: Start difference. First operand 3406 states and 5984 transitions. Second operand 8 states. [2019-09-07 14:13:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:27,332 INFO L93 Difference]: Finished difference Result 13950 states and 25454 transitions. [2019-09-07 14:13:27,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 14:13:27,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 814 [2019-09-07 14:13:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:27,406 INFO L225 Difference]: With dead ends: 13950 [2019-09-07 14:13:27,407 INFO L226 Difference]: Without dead ends: 10550 [2019-09-07 14:13:27,426 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 815 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2019-09-07 14:13:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10550 states. [2019-09-07 14:13:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10550 to 10513. [2019-09-07 14:13:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2019-09-07 14:13:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 16788 transitions. [2019-09-07 14:13:27,891 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 16788 transitions. Word has length 814 [2019-09-07 14:13:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:27,891 INFO L475 AbstractCegarLoop]: Abstraction has 10513 states and 16788 transitions. [2019-09-07 14:13:27,892 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 14:13:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 16788 transitions. [2019-09-07 14:13:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2019-09-07 14:13:27,946 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:27,947 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:13:27,947 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:27,948 INFO L82 PathProgramCache]: Analyzing trace with hash 328741767, now seen corresponding path program 1 times [2019-09-07 14:13:27,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:27,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:27,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:27,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:27,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:28,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:28,773 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 14:13:28,791 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 14:13:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:29,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:13:29,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:29,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:13:29,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:13:29,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:13:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:13:29,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:13:29,866 INFO L87 Difference]: Start difference. First operand 10513 states and 16788 transitions. Second operand 9 states. [2019-09-07 14:13:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:42,912 INFO L93 Difference]: Finished difference Result 50724 states and 92021 transitions. [2019-09-07 14:13:42,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 14:13:42,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 871 [2019-09-07 14:13:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:43,188 INFO L225 Difference]: With dead ends: 50724 [2019-09-07 14:13:43,188 INFO L226 Difference]: Without dead ends: 40217 [2019-09-07 14:13:43,249 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=869, Unknown=0, NotChecked=0, Total=1122 [2019-09-07 14:13:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40217 states. [2019-09-07 14:13:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40217 to 39871. [2019-09-07 14:13:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39871 states. [2019-09-07 14:13:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39871 states to 39871 states and 62699 transitions. [2019-09-07 14:13:44,606 INFO L78 Accepts]: Start accepts. Automaton has 39871 states and 62699 transitions. Word has length 871 [2019-09-07 14:13:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:44,606 INFO L475 AbstractCegarLoop]: Abstraction has 39871 states and 62699 transitions. [2019-09-07 14:13:44,607 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:13:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 39871 states and 62699 transitions. [2019-09-07 14:13:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2019-09-07 14:13:44,788 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:44,790 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:13:44,790 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1996974384, now seen corresponding path program 1 times [2019-09-07 14:13:44,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:44,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:44,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:44,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:44,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:47,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:13:47,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:13:47,919 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:13:47,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:13:47,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:13:47,920 INFO L87 Difference]: Start difference. First operand 39871 states and 62699 transitions. Second operand 3 states. [2019-09-07 14:13:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:52,537 INFO L93 Difference]: Finished difference Result 107369 states and 170658 transitions. [2019-09-07 14:13:52,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:13:52,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 931 [2019-09-07 14:13:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:52,868 INFO L225 Difference]: With dead ends: 107369 [2019-09-07 14:13:52,868 INFO L226 Difference]: Without dead ends: 67504 [2019-09-07 14:13:53,025 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 14:13:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67504 states. [2019-09-07 14:13:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67504 to 64140. [2019-09-07 14:13:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64140 states. [2019-09-07 14:13:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64140 states to 64140 states and 94066 transitions. [2019-09-07 14:13:56,141 INFO L78 Accepts]: Start accepts. Automaton has 64140 states and 94066 transitions. Word has length 931 [2019-09-07 14:13:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:56,143 INFO L475 AbstractCegarLoop]: Abstraction has 64140 states and 94066 transitions. [2019-09-07 14:13:56,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:13:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 64140 states and 94066 transitions. [2019-09-07 14:13:56,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2019-09-07 14:13:56,272 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:56,273 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 14:13:56,273 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1044427130, now seen corresponding path program 1 times [2019-09-07 14:13:56,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:56,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:56,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:56,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:56,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 146 proven. 87 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:13:57,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:57,420 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 14:13:57,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:57,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:13:57,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 56 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 14:13:58,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:13:58,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:13:58,487 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:13:58,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:13:58,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:13:58,488 INFO L87 Difference]: Start difference. First operand 64140 states and 94066 transitions. Second operand 14 states. [2019-09-07 14:14:00,463 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2019-09-07 14:14:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:14:41,435 INFO L93 Difference]: Finished difference Result 271504 states and 456814 transitions. [2019-09-07 14:14:41,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-07 14:14:41,436 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 936 [2019-09-07 14:14:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:14:42,721 INFO L225 Difference]: With dead ends: 271504 [2019-09-07 14:14:42,721 INFO L226 Difference]: Without dead ends: 207370 [2019-09-07 14:14:42,898 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 986 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=789, Invalid=3501, Unknown=0, NotChecked=0, Total=4290 [2019-09-07 14:14:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207370 states. [2019-09-07 14:14:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207370 to 204825. [2019-09-07 14:14:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204825 states. [2019-09-07 14:14:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204825 states to 204825 states and 284458 transitions. [2019-09-07 14:14:53,010 INFO L78 Accepts]: Start accepts. Automaton has 204825 states and 284458 transitions. Word has length 936 [2019-09-07 14:14:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:14:53,010 INFO L475 AbstractCegarLoop]: Abstraction has 204825 states and 284458 transitions. [2019-09-07 14:14:53,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:14:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 204825 states and 284458 transitions. [2019-09-07 14:14:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2019-09-07 14:14:53,486 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:14:53,487 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:14:53,488 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:14:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:14:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1353463028, now seen corresponding path program 1 times [2019-09-07 14:14:53,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:14:53,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:14:53,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:53,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:14:53,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:14:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:14:54,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:14:54,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:14:54,784 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:14:54,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:14:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:14:54,785 INFO L87 Difference]: Start difference. First operand 204825 states and 284458 transitions. Second operand 6 states. [2019-09-07 14:15:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:15:03,270 INFO L93 Difference]: Finished difference Result 422214 states and 594984 transitions. [2019-09-07 14:15:03,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 14:15:03,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 981 [2019-09-07 14:15:03,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:15:04,366 INFO L225 Difference]: With dead ends: 422214 [2019-09-07 14:15:04,366 INFO L226 Difference]: Without dead ends: 218229 [2019-09-07 14:15:10,556 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 14:15:10,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218229 states. [2019-09-07 14:15:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218229 to 217723. [2019-09-07 14:15:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217723 states. [2019-09-07 14:15:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217723 states to 217723 states and 282544 transitions. [2019-09-07 14:15:15,509 INFO L78 Accepts]: Start accepts. Automaton has 217723 states and 282544 transitions. Word has length 981 [2019-09-07 14:15:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:15:15,510 INFO L475 AbstractCegarLoop]: Abstraction has 217723 states and 282544 transitions. [2019-09-07 14:15:15,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:15:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 217723 states and 282544 transitions. [2019-09-07 14:15:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2019-09-07 14:15:15,779 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:15:15,780 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:15:15,781 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:15:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:15:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash -613172470, now seen corresponding path program 1 times [2019-09-07 14:15:15,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:15:15,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:15:15,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:15:15,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:15:15,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:15:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:15:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 287 proven. 215 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:15:17,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:15:17,478 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 14:15:17,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:15:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:15:17,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:15:17,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:15:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 448 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-07 14:15:19,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:15:19,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 14:15:19,551 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:15:19,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:15:19,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:15:19,554 INFO L87 Difference]: Start difference. First operand 217723 states and 282544 transitions. Second operand 13 states. [2019-09-07 14:15:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:15:41,546 INFO L93 Difference]: Finished difference Result 452631 states and 614316 transitions. [2019-09-07 14:15:41,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-07 14:15:41,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1077 [2019-09-07 14:15:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:15:42,398 INFO L225 Difference]: With dead ends: 452631 [2019-09-07 14:15:42,398 INFO L226 Difference]: Without dead ends: 235748 [2019-09-07 14:15:42,625 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1108 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=1574, Unknown=0, NotChecked=0, Total=2070 [2019-09-07 14:15:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235748 states. [2019-09-07 14:15:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235748 to 234569. [2019-09-07 14:15:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234569 states. [2019-09-07 14:15:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234569 states to 234569 states and 306171 transitions. [2019-09-07 14:15:50,485 INFO L78 Accepts]: Start accepts. Automaton has 234569 states and 306171 transitions. Word has length 1077 [2019-09-07 14:15:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:15:50,486 INFO L475 AbstractCegarLoop]: Abstraction has 234569 states and 306171 transitions. [2019-09-07 14:15:50,486 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:15:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 234569 states and 306171 transitions. [2019-09-07 14:15:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2019-09-07 14:15:50,772 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:15:50,772 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:15:50,773 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:15:50,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:15:50,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1631811927, now seen corresponding path program 1 times [2019-09-07 14:15:50,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:15:50,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:15:50,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:15:50,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:15:50,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:15:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:15:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 384 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:15:55,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:15:55,586 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 14:15:55,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:15:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:15:55,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:15:55,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:15:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:15:56,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:15:56,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 14:15:56,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:15:56,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:15:56,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:15:56,447 INFO L87 Difference]: Start difference. First operand 234569 states and 306171 transitions. Second operand 13 states. [2019-09-07 14:16:28,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:16:28,708 INFO L93 Difference]: Finished difference Result 712779 states and 1020822 transitions. [2019-09-07 14:16:28,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-09-07 14:16:28,709 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1178 [2019-09-07 14:16:28,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:16:30,607 INFO L225 Difference]: With dead ends: 712779 [2019-09-07 14:16:30,607 INFO L226 Difference]: Without dead ends: 479050 [2019-09-07 14:16:30,961 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=481, Invalid=1775, Unknown=0, NotChecked=0, Total=2256 [2019-09-07 14:16:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479050 states. [2019-09-07 14:16:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479050 to 471859. [2019-09-07 14:16:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471859 states. [2019-09-07 14:16:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471859 states to 471859 states and 648139 transitions. [2019-09-07 14:16:56,205 INFO L78 Accepts]: Start accepts. Automaton has 471859 states and 648139 transitions. Word has length 1178 [2019-09-07 14:16:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:16:56,206 INFO L475 AbstractCegarLoop]: Abstraction has 471859 states and 648139 transitions. [2019-09-07 14:16:56,206 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:16:56,206 INFO L276 IsEmpty]: Start isEmpty. Operand 471859 states and 648139 transitions. [2019-09-07 14:16:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2019-09-07 14:16:56,837 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:16:56,838 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:16:56,838 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:16:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:16:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1989039275, now seen corresponding path program 1 times [2019-09-07 14:16:56,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:16:56,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:16:56,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:56,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:56,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:16:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 539 proven. 83 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-09-07 14:16:58,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:16:58,550 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:16:58,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:16:58,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:16:58,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:17:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2019-09-07 14:17:04,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:17:04,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 14:17:04,366 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 14:17:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 14:17:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 14:17:04,367 INFO L87 Difference]: Start difference. First operand 471859 states and 648139 transitions. Second operand 7 states. [2019-09-07 14:17:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:17:19,364 INFO L93 Difference]: Finished difference Result 766867 states and 1054162 transitions. [2019-09-07 14:17:19,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 14:17:19,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1183 [2019-09-07 14:17:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:17:21,254 INFO L225 Difference]: With dead ends: 766867 [2019-09-07 14:17:21,255 INFO L226 Difference]: Without dead ends: 295848 [2019-09-07 14:17:21,852 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:17:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295848 states. [2019-09-07 14:17:26,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295848 to 260270. [2019-09-07 14:17:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260270 states. [2019-09-07 14:17:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260270 states to 260270 states and 293870 transitions. [2019-09-07 14:17:36,808 INFO L78 Accepts]: Start accepts. Automaton has 260270 states and 293870 transitions. Word has length 1183 [2019-09-07 14:17:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:17:36,809 INFO L475 AbstractCegarLoop]: Abstraction has 260270 states and 293870 transitions. [2019-09-07 14:17:36,809 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 14:17:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 260270 states and 293870 transitions. [2019-09-07 14:17:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2019-09-07 14:17:36,936 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:17:36,937 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:17:36,937 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:17:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:17:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1884285933, now seen corresponding path program 1 times [2019-09-07 14:17:36,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:17:36,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:17:36,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:17:36,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:17:36,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:17:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:17:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-09-07 14:17:38,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:17:38,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 14:17:38,493 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 14:17:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 14:17:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 14:17:38,494 INFO L87 Difference]: Start difference. First operand 260270 states and 293870 transitions. Second operand 4 states. [2019-09-07 14:17:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:17:47,318 INFO L93 Difference]: Finished difference Result 569850 states and 645333 transitions. [2019-09-07 14:17:47,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 14:17:47,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1202 [2019-09-07 14:17:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:17:48,025 INFO L225 Difference]: With dead ends: 569850 [2019-09-07 14:17:48,026 INFO L226 Difference]: Without dead ends: 310420 [2019-09-07 14:17:48,222 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 14:17:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310420 states. [2019-09-07 14:17:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310420 to 304513. [2019-09-07 14:17:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304513 states. [2019-09-07 14:17:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304513 states to 304513 states and 336646 transitions. [2019-09-07 14:17:53,610 INFO L78 Accepts]: Start accepts. Automaton has 304513 states and 336646 transitions. Word has length 1202 [2019-09-07 14:17:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:17:53,611 INFO L475 AbstractCegarLoop]: Abstraction has 304513 states and 336646 transitions. [2019-09-07 14:17:53,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 14:17:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 304513 states and 336646 transitions. [2019-09-07 14:17:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2019-09-07 14:17:53,739 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:17:53,740 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:17:53,740 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:17:53,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:17:53,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1047576404, now seen corresponding path program 1 times [2019-09-07 14:17:53,741 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:17:53,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:17:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:17:53,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:17:53,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:17:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:18:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 215 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:18:00,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:18:00,248 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 14:18:00,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:18:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:18:00,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:18:00,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:18:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:18:01,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:18:01,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 14:18:01,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 14:18:01,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 14:18:01,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 14:18:01,391 INFO L87 Difference]: Start difference. First operand 304513 states and 336646 transitions. Second operand 8 states. [2019-09-07 14:18:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:18:13,299 INFO L93 Difference]: Finished difference Result 550229 states and 608518 transitions. [2019-09-07 14:18:13,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 14:18:13,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1235 [2019-09-07 14:18:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:18:13,877 INFO L225 Difference]: With dead ends: 550229 [2019-09-07 14:18:13,878 INFO L226 Difference]: Without dead ends: 246556 [2019-09-07 14:18:14,116 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1258 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:18:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246556 states. [2019-09-07 14:18:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246556 to 231076. [2019-09-07 14:18:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231076 states. [2019-09-07 14:18:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231076 states to 231076 states and 244658 transitions. [2019-09-07 14:18:17,743 INFO L78 Accepts]: Start accepts. Automaton has 231076 states and 244658 transitions. Word has length 1235 [2019-09-07 14:18:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:18:17,744 INFO L475 AbstractCegarLoop]: Abstraction has 231076 states and 244658 transitions. [2019-09-07 14:18:17,744 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 14:18:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 231076 states and 244658 transitions. [2019-09-07 14:18:18,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4170 [2019-09-07 14:18:18,763 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:18:18,764 INFO L399 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:18:18,765 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:18:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:18:18,766 INFO L82 PathProgramCache]: Analyzing trace with hash 520060565, now seen corresponding path program 1 times [2019-09-07 14:18:18,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:18:18,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:18:18,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:18:18,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:18:18,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:18:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:18:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15348 backedges. 3358 proven. 2658 refuted. 0 times theorem prover too weak. 9332 trivial. 0 not checked. [2019-09-07 14:18:28,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:18:28,827 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 14:18:28,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:18:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:18:29,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 5412 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:18:29,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:18:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15348 backedges. 5552 proven. 2 refuted. 0 times theorem prover too weak. 9794 trivial. 0 not checked. [2019-09-07 14:18:35,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:18:35,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 14:18:35,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:18:35,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:18:35,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:18:35,531 INFO L87 Difference]: Start difference. First operand 231076 states and 244658 transitions. Second operand 13 states. [2019-09-07 14:18:56,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:18:56,660 INFO L93 Difference]: Finished difference Result 435506 states and 462546 transitions. [2019-09-07 14:18:56,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-09-07 14:18:56,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 4169 [2019-09-07 14:18:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:18:57,095 INFO L225 Difference]: With dead ends: 435506 [2019-09-07 14:18:57,096 INFO L226 Difference]: Without dead ends: 224701 [2019-09-07 14:18:57,274 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4297 GetRequests, 4227 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=906, Invalid=4206, Unknown=0, NotChecked=0, Total=5112 [2019-09-07 14:18:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224701 states. [2019-09-07 14:19:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224701 to 214659. [2019-09-07 14:19:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214659 states. [2019-09-07 14:19:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214659 states to 214659 states and 223158 transitions. [2019-09-07 14:19:03,648 INFO L78 Accepts]: Start accepts. Automaton has 214659 states and 223158 transitions. Word has length 4169 [2019-09-07 14:19:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:19:03,649 INFO L475 AbstractCegarLoop]: Abstraction has 214659 states and 223158 transitions. [2019-09-07 14:19:03,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:19:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 214659 states and 223158 transitions. [2019-09-07 14:19:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4735 [2019-09-07 14:19:04,847 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:19:04,849 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:19:04,850 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:19:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:19:04,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1411584923, now seen corresponding path program 1 times [2019-09-07 14:19:04,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:19:04,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:19:04,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:19:04,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:19:04,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:19:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:19:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19989 backedges. 4306 proven. 2763 refuted. 0 times theorem prover too weak. 12920 trivial. 0 not checked. [2019-09-07 14:19:30,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:19:30,407 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 14:19:30,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:19:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:19:31,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 6144 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-07 14:19:31,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:19:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 19989 backedges. 5664 proven. 2 refuted. 0 times theorem prover too weak. 14323 trivial. 0 not checked. [2019-09-07 14:19:45,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:19:45,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 22 [2019-09-07 14:19:45,182 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 14:19:45,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 14:19:45,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2019-09-07 14:19:45,183 INFO L87 Difference]: Start difference. First operand 214659 states and 223158 transitions. Second operand 22 states. [2019-09-07 14:19:45,643 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2019-09-07 14:19:45,976 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2019-09-07 14:19:46,459 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-07 14:19:46,618 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-07 14:19:46,969 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-09-07 14:19:47,187 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2019-09-07 14:19:48,167 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2019-09-07 14:19:48,491 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2019-09-07 14:19:49,004 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-07 14:19:49,183 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 14:19:49,398 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2019-09-07 14:19:50,815 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2019-09-07 14:19:51,288 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2019-09-07 14:19:51,882 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-07 14:19:52,588 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2019-09-07 14:19:52,918 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2019-09-07 14:19:53,508 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2019-09-07 14:19:54,184 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2019-09-07 14:19:54,693 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2019-09-07 14:19:56,125 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 36 [2019-09-07 14:19:57,670 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-09-07 14:19:58,799 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2019-09-07 14:19:59,755 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-07 14:20:00,071 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2019-09-07 14:20:01,144 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2019-09-07 14:20:01,355 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-07 14:20:02,514 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-07 14:20:03,390 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2019-09-07 14:20:05,985 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2019-09-07 14:20:06,195 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-09-07 14:20:06,865 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2019-09-07 14:20:10,165 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2019-09-07 14:20:10,673 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2019-09-07 14:20:11,598 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2019-09-07 14:20:12,121 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 40 [2019-09-07 14:20:12,317 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2019-09-07 14:20:13,008 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-07 14:20:14,199 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-07 14:20:15,726 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-07 14:20:16,870 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-07 14:20:17,114 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2019-09-07 14:20:17,714 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-09-07 14:20:17,980 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-07 14:20:19,062 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2019-09-07 14:20:20,063 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 14:20:20,385 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2019-09-07 14:20:21,007 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2019-09-07 14:20:23,622 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2019-09-07 14:20:24,060 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-07 14:20:25,978 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-07 14:20:26,858 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-09-07 14:20:27,315 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2019-09-07 14:20:27,656 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-07 14:20:31,266 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-09-07 14:20:31,905 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 14:20:32,593 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2019-09-07 14:20:33,060 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-09-07 14:20:33,595 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-07 14:20:35,020 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-09-07 14:20:35,997 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2019-09-07 14:20:36,640 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2019-09-07 14:20:38,692 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 14:20:38,971 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-07 14:20:39,361 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2019-09-07 14:20:40,073 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-07 14:20:40,335 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-07 14:20:40,614 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2019-09-07 14:20:41,024 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-07 14:20:41,192 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 14:20:41,428 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-07 14:20:42,502 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-07 14:20:42,669 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2019-09-07 14:20:43,082 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2019-09-07 14:20:43,650 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-07 14:20:44,041 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2019-09-07 14:20:45,192 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-07 14:20:46,506 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-07 14:20:47,293 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-07 14:20:49,059 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-07 14:20:49,549 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-07 14:20:50,307 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-07 14:20:50,465 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 14:20:50,875 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2019-09-07 14:20:51,091 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2019-09-07 14:20:51,486 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:20:52,050 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2019-09-07 14:20:52,489 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-07 14:20:52,623 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-07 14:20:53,585 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2019-09-07 14:20:53,913 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2019-09-07 14:20:54,211 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-07 14:20:54,513 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2019-09-07 14:20:54,733 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2019-09-07 14:20:55,022 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-07 14:20:55,321 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 14:20:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:20:57,304 INFO L93 Difference]: Finished difference Result 355713 states and 372472 transitions. [2019-09-07 14:20:57,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2019-09-07 14:20:57,304 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 4734 [2019-09-07 14:20:57,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:20:57,797 INFO L225 Difference]: With dead ends: 355713 [2019-09-07 14:20:57,797 INFO L226 Difference]: Without dead ends: 208994 [2019-09-07 14:20:57,939 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5065 GetRequests, 4857 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18761 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=5568, Invalid=37904, Unknown=0, NotChecked=0, Total=43472 [2019-09-07 14:20:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208994 states. [2019-09-07 14:21:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208994 to 200539. [2019-09-07 14:21:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200539 states. [2019-09-07 14:21:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200539 states to 200539 states and 204277 transitions. [2019-09-07 14:21:00,436 INFO L78 Accepts]: Start accepts. Automaton has 200539 states and 204277 transitions. Word has length 4734 [2019-09-07 14:21:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:21:00,437 INFO L475 AbstractCegarLoop]: Abstraction has 200539 states and 204277 transitions. [2019-09-07 14:21:00,437 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-07 14:21:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 200539 states and 204277 transitions. [2019-09-07 14:21:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4756 [2019-09-07 14:21:00,715 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:21:00,717 INFO L399 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:21:00,717 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:21:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:21:00,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1083051620, now seen corresponding path program 1 times [2019-09-07 14:21:00,718 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:21:00,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:21:00,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:21:00,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:21:00,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:21:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:21:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19617 backedges. 4367 proven. 1852 refuted. 0 times theorem prover too weak. 13398 trivial. 0 not checked. [2019-09-07 14:21:18,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:21:18,076 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) [2019-09-07 14:21:18,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:21:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:21:19,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 6107 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-07 14:21:19,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:21:19,770 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 14:21:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 19617 backedges. 9410 proven. 5 refuted. 0 times theorem prover too weak. 10202 trivial. 0 not checked. [2019-09-07 14:21:47,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:21:47,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2019-09-07 14:21:47,477 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 14:21:47,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 14:21:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-09-07 14:21:47,478 INFO L87 Difference]: Start difference. First operand 200539 states and 204277 transitions. Second operand 17 states. [2019-09-07 14:22:09,495 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2019-09-07 14:22:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:22:19,901 INFO L93 Difference]: Finished difference Result 339368 states and 345470 transitions. [2019-09-07 14:22:19,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2019-09-07 14:22:19,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 4755 [2019-09-07 14:22:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:22:20,213 INFO L225 Difference]: With dead ends: 339368 [2019-09-07 14:22:20,213 INFO L226 Difference]: Without dead ends: 157428 [2019-09-07 14:22:20,360 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4992 GetRequests, 4848 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8298 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3142, Invalid=17738, Unknown=0, NotChecked=0, Total=20880 [2019-09-07 14:22:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157428 states. [2019-09-07 14:22:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157428 to 137747. [2019-09-07 14:22:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137747 states. [2019-09-07 14:22:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137747 states to 137747 states and 139275 transitions. [2019-09-07 14:22:22,115 INFO L78 Accepts]: Start accepts. Automaton has 137747 states and 139275 transitions. Word has length 4755 [2019-09-07 14:22:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:22:22,116 INFO L475 AbstractCegarLoop]: Abstraction has 137747 states and 139275 transitions. [2019-09-07 14:22:22,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 14:22:22,116 INFO L276 IsEmpty]: Start isEmpty. Operand 137747 states and 139275 transitions. [2019-09-07 14:22:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5365 [2019-09-07 14:22:22,350 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:22:22,352 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:22:22,352 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:22:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:22:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2052779224, now seen corresponding path program 1 times [2019-09-07 14:22:22,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:22:22,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:22:22,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:22:22,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:22:22,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:22:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:22:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 24410 backedges. 4642 proven. 887 refuted. 0 times theorem prover too weak. 18881 trivial. 0 not checked. [2019-09-07 14:22:35,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:22:35,942 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 14:22:35,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:22:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:22:37,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 6886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 14:22:37,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:22:37,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 14:22:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24410 backedges. 2326 proven. 2 refuted. 0 times theorem prover too weak. 22082 trivial. 0 not checked. [2019-09-07 14:22:47,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:22:47,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 14:22:47,392 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 14:22:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 14:22:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:22:47,393 INFO L87 Difference]: Start difference. First operand 137747 states and 139275 transitions. Second operand 15 states. [2019-09-07 14:23:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:23:14,378 INFO L93 Difference]: Finished difference Result 236774 states and 239406 transitions. [2019-09-07 14:23:14,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2019-09-07 14:23:14,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 5364 [2019-09-07 14:23:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:23:14,605 INFO L225 Difference]: With dead ends: 236774 [2019-09-07 14:23:14,605 INFO L226 Difference]: Without dead ends: 142163 [2019-09-07 14:23:14,657 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5619 GetRequests, 5481 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7542 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2319, Invalid=16587, Unknown=0, NotChecked=0, Total=18906 [2019-09-07 14:23:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142163 states. [2019-09-07 14:23:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142163 to 135215. [2019-09-07 14:23:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135215 states. [2019-09-07 14:23:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135215 states to 135215 states and 136528 transitions. [2019-09-07 14:23:15,951 INFO L78 Accepts]: Start accepts. Automaton has 135215 states and 136528 transitions. Word has length 5364 [2019-09-07 14:23:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:23:15,952 INFO L475 AbstractCegarLoop]: Abstraction has 135215 states and 136528 transitions. [2019-09-07 14:23:15,952 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 14:23:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 135215 states and 136528 transitions. [2019-09-07 14:23:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5455 [2019-09-07 14:23:16,221 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:23:16,223 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:23:16,223 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:23:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:23:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash 779378753, now seen corresponding path program 1 times [2019-09-07 14:23:16,225 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:23:16,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:23:16,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:23:16,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:23:16,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:23:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:23:21,637 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-07 14:23:21,789 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-07 14:24:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 6669 proven. 10294 refuted. 0 times theorem prover too weak. 8801 trivial. 0 not checked. [2019-09-07 14:24:06,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:24:06,525 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 14:24:06,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:24:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:24:07,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 7033 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:24:08,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:24:08,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 14:24:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 4174 proven. 2 refuted. 0 times theorem prover too weak. 21588 trivial. 0 not checked. [2019-09-07 14:24:17,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:24:17,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 5] total 42 [2019-09-07 14:24:17,565 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-07 14:24:17,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-07 14:24:17,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1539, Unknown=0, NotChecked=0, Total=1722 [2019-09-07 14:24:17,566 INFO L87 Difference]: Start difference. First operand 135215 states and 136528 transitions. Second operand 42 states. [2019-09-07 14:24:17,761 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-07 14:24:18,223 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2019-09-07 14:24:18,416 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2019-09-07 14:24:18,765 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 38 [2019-09-07 14:24:22,548 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2019-09-07 14:24:23,260 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 42 [2019-09-07 14:24:27,101 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-07 14:24:27,399 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-07 14:24:27,864 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-09-07 14:24:28,785 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2019-09-07 14:24:30,669 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59