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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:56:48,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:56:48,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:56:48,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 13:56:48,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 13:56:48,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 13:56:48,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 13:56:48,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 13:56:48,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 13:56:48,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 13:56:48,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 13:56:48,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 13:56:48,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:56:48,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:56:48,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:56:48,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:56:48,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:56:48,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:56:48,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:56:48,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:56:48,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:56:48,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:56:48,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:56:48,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:56:48,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 13:56:48,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 13:56:48,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 13:56:48,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 13:56:48,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 13:56:48,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 13:56:48,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 13:56:48,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 13:56:48,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 13:56:48,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 13:56:48,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 13:56:48,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 13:56:48,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 13:56:48,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 13:56:48,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:56:48,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:56:48,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:56:48,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 13:56:48,835 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:56:48,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:56:48,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:56:48,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:56:48,838 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:56:48,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:56:48,839 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:56:48,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:56:48,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:56:48,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:56:48,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:56:48,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:56:48,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:56:48,841 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:56:48,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:56:48,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:56:48,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:56:48,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:56:48,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:56:48,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:56:48,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:56:48,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:56:48,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:56:48,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:56:48,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:56:48,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:56:48,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:56:48,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:56:48,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:56:48,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:56:48,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:56:48,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:56:48,905 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:56:48,906 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:56:48,906 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label32.c [2019-09-07 13:56:48,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e72a17b/0ad7f29ae05a47ca91e4e2c2516cc23a/FLAG2163ea2fb [2019-09-07 13:56:49,756 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:56:49,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label32.c [2019-09-07 13:56:49,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e72a17b/0ad7f29ae05a47ca91e4e2c2516cc23a/FLAG2163ea2fb [2019-09-07 13:56:49,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e72a17b/0ad7f29ae05a47ca91e4e2c2516cc23a [2019-09-07 13:56:49,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:56:49,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:56:49,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:56:49,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:56:49,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:56:49,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:56:49" (1/1) ... [2019-09-07 13:56:49,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd174ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:49, skipping insertion in model container [2019-09-07 13:56:49,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:56:49" (1/1) ... [2019-09-07 13:56:49,874 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:56:50,036 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:56:51,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:56:51,858 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:56:52,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:56:52,644 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:56:52,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52 WrapperNode [2019-09-07 13:56:52,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:56:52,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:56:52,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:56:52,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:56:52,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... [2019-09-07 13:56:52,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:56:52,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:56:52,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:56:52,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:56:52,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:56:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:56:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:56:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:56:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 13:56:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 13:56:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 13:56:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:56:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:56:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 13:56:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 13:56:52,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 13:56:52,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:56:52,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:56:52,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:56:52,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:56:52,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:56:52,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:56:57,248 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:56:57,249 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:56:57,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:56:57 BoogieIcfgContainer [2019-09-07 13:56:57,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:56:57,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:56:57,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:56:57,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:56:57,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:56:49" (1/3) ... [2019-09-07 13:56:57,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a0b494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:56:57, skipping insertion in model container [2019-09-07 13:56:57,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:56:52" (2/3) ... [2019-09-07 13:56:57,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a0b494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:56:57, skipping insertion in model container [2019-09-07 13:56:57,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:56:57" (3/3) ... [2019-09-07 13:56:57,267 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label32.c [2019-09-07 13:56:57,277 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:56:57,289 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:56:57,307 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:56:57,360 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:56:57,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:56:57,361 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:56:57,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:56:57,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:56:57,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:56:57,362 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:56:57,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:56:57,362 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:56:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 13:56:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2019-09-07 13:56:57,455 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:56:57,457 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] [2019-09-07 13:56:57,459 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:56:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:56:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1193309517, now seen corresponding path program 1 times [2019-09-07 13:56:57,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:56:57,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:56:57,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:56:57,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:56:57,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:56:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:56:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:56:59,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:56:59,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:56:59,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:56:59,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:56:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:56:59,806 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 13:57:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:04,140 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 13:57:04,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:57:04,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 784 [2019-09-07 13:57:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:04,215 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 13:57:04,216 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 13:57:04,235 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:57:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 13:57:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 13:57:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 13:57:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3016 transitions. [2019-09-07 13:57:04,477 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3016 transitions. Word has length 784 [2019-09-07 13:57:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:04,482 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 3016 transitions. [2019-09-07 13:57:04,483 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:57:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3016 transitions. [2019-09-07 13:57:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2019-09-07 13:57:04,536 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:04,537 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:57:04,537 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:04,539 INFO L82 PathProgramCache]: Analyzing trace with hash 384524034, now seen corresponding path program 1 times [2019-09-07 13:57:04,540 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:04,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:04,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:04,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:04,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:57:05,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:57:05,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:57:05,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:57:05,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:57:05,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:57:05,636 INFO L87 Difference]: Start difference. First operand 1676 states and 3016 transitions. Second operand 3 states. [2019-09-07 13:57:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:09,838 INFO L93 Difference]: Finished difference Result 5014 states and 9083 transitions. [2019-09-07 13:57:09,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:57:09,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 792 [2019-09-07 13:57:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:09,870 INFO L225 Difference]: With dead ends: 5014 [2019-09-07 13:57:09,870 INFO L226 Difference]: Without dead ends: 3344 [2019-09-07 13:57:09,875 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:57:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2019-09-07 13:57:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3344. [2019-09-07 13:57:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3344 states. [2019-09-07 13:57:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5666 transitions. [2019-09-07 13:57:09,964 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5666 transitions. Word has length 792 [2019-09-07 13:57:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:09,966 INFO L475 AbstractCegarLoop]: Abstraction has 3344 states and 5666 transitions. [2019-09-07 13:57:09,966 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:57:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5666 transitions. [2019-09-07 13:57:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2019-09-07 13:57:09,993 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:09,994 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:57:09,994 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash 355350122, now seen corresponding path program 1 times [2019-09-07 13:57:09,995 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:09,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:09,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:09,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:09,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:57:10,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:57:10,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 13:57:10,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:57:10,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:57:10,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:57:10,695 INFO L87 Difference]: Start difference. First operand 3344 states and 5666 transitions. Second operand 7 states. [2019-09-07 13:57:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:17,642 INFO L93 Difference]: Finished difference Result 8558 states and 14628 transitions. [2019-09-07 13:57:17,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 13:57:17,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2019-09-07 13:57:17,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:17,694 INFO L225 Difference]: With dead ends: 8558 [2019-09-07 13:57:17,697 INFO L226 Difference]: Without dead ends: 5220 [2019-09-07 13:57:17,707 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:57:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states. [2019-09-07 13:57:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 5112. [2019-09-07 13:57:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5112 states. [2019-09-07 13:57:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 8330 transitions. [2019-09-07 13:57:17,911 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 8330 transitions. Word has length 804 [2019-09-07 13:57:17,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:17,912 INFO L475 AbstractCegarLoop]: Abstraction has 5112 states and 8330 transitions. [2019-09-07 13:57:17,912 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:57:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 8330 transitions. [2019-09-07 13:57:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2019-09-07 13:57:17,935 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:17,936 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:57:17,936 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 138572585, now seen corresponding path program 1 times [2019-09-07 13:57:17,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:17,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:17,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:17,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:17,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:57:18,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:57:18,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:57:18,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:19,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:57:19,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:57:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:57:19,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:57:19,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:57:19,806 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:57:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:57:19,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:57:19,809 INFO L87 Difference]: Start difference. First operand 5112 states and 8330 transitions. Second operand 9 states. [2019-09-07 13:57:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:32,747 INFO L93 Difference]: Finished difference Result 25944 states and 44631 transitions. [2019-09-07 13:57:32,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 13:57:32,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 820 [2019-09-07 13:57:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:32,900 INFO L225 Difference]: With dead ends: 25944 [2019-09-07 13:57:32,900 INFO L226 Difference]: Without dead ends: 20838 [2019-09-07 13:57:32,932 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 13:57:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20838 states. [2019-09-07 13:57:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20838 to 18983. [2019-09-07 13:57:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18983 states. [2019-09-07 13:57:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18983 states to 18983 states and 26686 transitions. [2019-09-07 13:57:33,556 INFO L78 Accepts]: Start accepts. Automaton has 18983 states and 26686 transitions. Word has length 820 [2019-09-07 13:57:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:33,557 INFO L475 AbstractCegarLoop]: Abstraction has 18983 states and 26686 transitions. [2019-09-07 13:57:33,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:57:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 18983 states and 26686 transitions. [2019-09-07 13:57:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2019-09-07 13:57:33,623 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:33,624 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:57:33,624 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash -243309651, now seen corresponding path program 1 times [2019-09-07 13:57:33,625 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:33,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:33,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:33,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:33,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 124 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:57:34,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:57:34,627 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:57:34,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:57:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:34,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:57:34,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:57:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-07 13:57:35,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:57:35,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:57:35,826 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:57:35,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:57:35,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:57:35,827 INFO L87 Difference]: Start difference. First operand 18983 states and 26686 transitions. Second operand 9 states. [2019-09-07 13:57:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:43,449 INFO L93 Difference]: Finished difference Result 50947 states and 74592 transitions. [2019-09-07 13:57:43,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:57:43,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 914 [2019-09-07 13:57:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:43,623 INFO L225 Difference]: With dead ends: 50947 [2019-09-07 13:57:43,623 INFO L226 Difference]: Without dead ends: 31970 [2019-09-07 13:57:43,689 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:57:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31970 states. [2019-09-07 13:57:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31970 to 29285. [2019-09-07 13:57:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29285 states. [2019-09-07 13:57:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29285 states to 29285 states and 39216 transitions. [2019-09-07 13:57:44,507 INFO L78 Accepts]: Start accepts. Automaton has 29285 states and 39216 transitions. Word has length 914 [2019-09-07 13:57:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:44,507 INFO L475 AbstractCegarLoop]: Abstraction has 29285 states and 39216 transitions. [2019-09-07 13:57:44,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:57:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 29285 states and 39216 transitions. [2019-09-07 13:57:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2019-09-07 13:57:44,604 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:44,605 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:57:44,605 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:44,606 INFO L82 PathProgramCache]: Analyzing trace with hash -698077663, now seen corresponding path program 1 times [2019-09-07 13:57:44,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:44,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:44,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:44,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:44,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 222 proven. 142 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-09-07 13:57:45,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:57:45,872 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:57:45,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:46,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:57:46,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:57:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 267 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 13:57:46,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:57:46,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:57:46,915 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:57:46,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:57:46,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:57:46,917 INFO L87 Difference]: Start difference. First operand 29285 states and 39216 transitions. Second operand 9 states. [2019-09-07 13:57:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:57:55,431 INFO L93 Difference]: Finished difference Result 83637 states and 117911 transitions. [2019-09-07 13:57:55,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:57:55,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1018 [2019-09-07 13:57:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:57:55,697 INFO L225 Difference]: With dead ends: 83637 [2019-09-07 13:57:55,697 INFO L226 Difference]: Without dead ends: 54358 [2019-09-07 13:57:55,782 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1020 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:57:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54358 states. [2019-09-07 13:57:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54358 to 47313. [2019-09-07 13:57:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47313 states. [2019-09-07 13:57:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47313 states to 47313 states and 64181 transitions. [2019-09-07 13:57:58,606 INFO L78 Accepts]: Start accepts. Automaton has 47313 states and 64181 transitions. Word has length 1018 [2019-09-07 13:57:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:57:58,606 INFO L475 AbstractCegarLoop]: Abstraction has 47313 states and 64181 transitions. [2019-09-07 13:57:58,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:57:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 47313 states and 64181 transitions. [2019-09-07 13:57:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2019-09-07 13:57:58,688 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:57:58,689 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:57:58,689 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:57:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:57:58,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1745186191, now seen corresponding path program 1 times [2019-09-07 13:57:58,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:57:58,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:57:58,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:58,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:57:58,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:57:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:57:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 357 proven. 261 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2019-09-07 13:57:59,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:57:59,937 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:57:59,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:58:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:58:00,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:58:00,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:58:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2019-09-07 13:58:01,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:58:01,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 13:58:01,104 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 13:58:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 13:58:01,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:58:01,105 INFO L87 Difference]: Start difference. First operand 47313 states and 64181 transitions. Second operand 14 states. [2019-09-07 13:58:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:58:41,836 INFO L93 Difference]: Finished difference Result 197076 states and 294610 transitions. [2019-09-07 13:58:41,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-07 13:58:41,836 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1142 [2019-09-07 13:58:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:58:42,564 INFO L225 Difference]: With dead ends: 197076 [2019-09-07 13:58:42,565 INFO L226 Difference]: Without dead ends: 149769 [2019-09-07 13:58:42,673 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1255 GetRequests, 1191 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=772, Invalid=3388, Unknown=0, NotChecked=0, Total=4160 [2019-09-07 13:58:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149769 states. [2019-09-07 13:58:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149769 to 148249. [2019-09-07 13:58:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148249 states. [2019-09-07 13:58:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148249 states to 148249 states and 195159 transitions. [2019-09-07 13:58:45,805 INFO L78 Accepts]: Start accepts. Automaton has 148249 states and 195159 transitions. Word has length 1142 [2019-09-07 13:58:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:58:45,805 INFO L475 AbstractCegarLoop]: Abstraction has 148249 states and 195159 transitions. [2019-09-07 13:58:45,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 13:58:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 148249 states and 195159 transitions. [2019-09-07 13:58:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2019-09-07 13:58:46,046 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:58:46,047 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:58:46,048 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:58:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:58:46,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1449534612, now seen corresponding path program 1 times [2019-09-07 13:58:46,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:58:46,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:58:46,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:58:46,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:58:46,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:58:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:58:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 565 proven. 200 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-09-07 13:58:50,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:58:50,084 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:58:50,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:58:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:58:50,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:58:50,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:58:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 696 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:58:51,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:58:51,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 13:58:51,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 13:58:51,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 13:58:51,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:58:51,084 INFO L87 Difference]: Start difference. First operand 148249 states and 195159 transitions. Second operand 14 states. [2019-09-07 13:59:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:59:19,100 INFO L93 Difference]: Finished difference Result 372219 states and 502089 transitions. [2019-09-07 13:59:19,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-09-07 13:59:19,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1240 [2019-09-07 13:59:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:59:19,846 INFO L225 Difference]: With dead ends: 372219 [2019-09-07 13:59:19,846 INFO L226 Difference]: Without dead ends: 223118 [2019-09-07 13:59:20,073 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1285 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=999, Invalid=3971, Unknown=0, NotChecked=0, Total=4970 [2019-09-07 13:59:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223118 states. [2019-09-07 13:59:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223118 to 216161. [2019-09-07 13:59:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216161 states. [2019-09-07 13:59:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216161 states to 216161 states and 274584 transitions. [2019-09-07 13:59:26,988 INFO L78 Accepts]: Start accepts. Automaton has 216161 states and 274584 transitions. Word has length 1240 [2019-09-07 13:59:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:59:26,989 INFO L475 AbstractCegarLoop]: Abstraction has 216161 states and 274584 transitions. [2019-09-07 13:59:26,989 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 13:59:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 216161 states and 274584 transitions. [2019-09-07 13:59:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1277 [2019-09-07 13:59:27,279 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:59:27,280 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:59:27,280 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:59:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:59:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash -505796315, now seen corresponding path program 1 times [2019-09-07 13:59:27,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:59:27,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:59:27,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:59:27,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:59:27,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:59:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:59:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 551 proven. 88 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-09-07 13:59:32,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:59:32,766 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:59:32,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:59:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:59:33,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:59:33,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:59:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 637 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-09-07 13:59:33,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:59:33,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:59:33,918 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:59:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:59:33,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:59:33,919 INFO L87 Difference]: Start difference. First operand 216161 states and 274584 transitions. Second operand 9 states. [2019-09-07 13:59:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:59:57,580 INFO L93 Difference]: Finished difference Result 381301 states and 495344 transitions. [2019-09-07 13:59:57,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-07 13:59:57,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1276 [2019-09-07 13:59:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:59:58,216 INFO L225 Difference]: With dead ends: 381301 [2019-09-07 13:59:58,216 INFO L226 Difference]: Without dead ends: 165980 [2019-09-07 13:59:58,443 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1311 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1639, Unknown=0, NotChecked=0, Total=2070 [2019-09-07 13:59:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165980 states. [2019-09-07 14:00:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165980 to 156311. [2019-09-07 14:00:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156311 states. [2019-09-07 14:00:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156311 states to 156311 states and 187881 transitions. [2019-09-07 14:00:01,002 INFO L78 Accepts]: Start accepts. Automaton has 156311 states and 187881 transitions. Word has length 1276 [2019-09-07 14:00:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:00:01,003 INFO L475 AbstractCegarLoop]: Abstraction has 156311 states and 187881 transitions. [2019-09-07 14:00:01,003 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:00:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 156311 states and 187881 transitions. [2019-09-07 14:00:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1969 [2019-09-07 14:00:01,254 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:00:01,256 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:00:01,256 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:00:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:00:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash 706422913, now seen corresponding path program 1 times [2019-09-07 14:00:01,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:00:01,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:00:01,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:01,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:00:01,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:00:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 1179 proven. 622 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2019-09-07 14:00:04,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:00:04,647 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 14:00:04,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:00:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:00:05,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:00:05,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:00:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2376 backedges. 906 proven. 2 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2019-09-07 14:00:09,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:00:09,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:00:09,656 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:00:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:00:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:00:09,656 INFO L87 Difference]: Start difference. First operand 156311 states and 187881 transitions. Second operand 11 states. [2019-09-07 14:00:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:00:29,956 INFO L93 Difference]: Finished difference Result 371764 states and 460894 transitions. [2019-09-07 14:00:29,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 14:00:29,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1968 [2019-09-07 14:00:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:00:30,775 INFO L225 Difference]: With dead ends: 371764 [2019-09-07 14:00:30,776 INFO L226 Difference]: Without dead ends: 216293 [2019-09-07 14:00:31,071 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2007 GetRequests, 1983 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2019-09-07 14:00:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216293 states. [2019-09-07 14:00:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216293 to 207392. [2019-09-07 14:00:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207392 states. [2019-09-07 14:00:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207392 states to 207392 states and 241014 transitions. [2019-09-07 14:00:34,497 INFO L78 Accepts]: Start accepts. Automaton has 207392 states and 241014 transitions. Word has length 1968 [2019-09-07 14:00:34,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:00:34,498 INFO L475 AbstractCegarLoop]: Abstraction has 207392 states and 241014 transitions. [2019-09-07 14:00:34,498 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:00:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 207392 states and 241014 transitions. [2019-09-07 14:00:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2285 [2019-09-07 14:00:38,534 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:00:38,535 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:00:38,535 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:00:38,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:00:38,536 INFO L82 PathProgramCache]: Analyzing trace with hash -576016782, now seen corresponding path program 1 times [2019-09-07 14:00:38,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:00:38,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:00:38,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:38,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:00:38,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:00:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 2464 proven. 14 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2019-09-07 14:00:41,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:00:41,993 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 14:00:42,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:00:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:00:42,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 14:00:42,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:00:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 2467 proven. 2 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2019-09-07 14:00:44,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:00:44,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:00:44,496 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:00:44,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:00:44,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:00:44,497 INFO L87 Difference]: Start difference. First operand 207392 states and 241014 transitions. Second operand 11 states. [2019-09-07 14:00:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:00:55,599 INFO L93 Difference]: Finished difference Result 396299 states and 457037 transitions. [2019-09-07 14:00:55,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 14:00:55,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2284 [2019-09-07 14:00:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:00:56,104 INFO L225 Difference]: With dead ends: 396299 [2019-09-07 14:00:56,104 INFO L226 Difference]: Without dead ends: 189747 [2019-09-07 14:00:56,406 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2317 GetRequests, 2297 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2019-09-07 14:00:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189747 states. [2019-09-07 14:00:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189747 to 184838. [2019-09-07 14:00:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184838 states. [2019-09-07 14:00:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184838 states to 184838 states and 204815 transitions. [2019-09-07 14:00:59,329 INFO L78 Accepts]: Start accepts. Automaton has 184838 states and 204815 transitions. Word has length 2284 [2019-09-07 14:00:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:00:59,330 INFO L475 AbstractCegarLoop]: Abstraction has 184838 states and 204815 transitions. [2019-09-07 14:00:59,330 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:00:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 184838 states and 204815 transitions. [2019-09-07 14:00:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3034 [2019-09-07 14:00:59,608 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:00:59,609 INFO L399 BasicCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:00:59,610 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:00:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:00:59,611 INFO L82 PathProgramCache]: Analyzing trace with hash -571863359, now seen corresponding path program 1 times [2019-09-07 14:00:59,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:00:59,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:00:59,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:59,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:00:59,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:00:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7874 backedges. 2380 proven. 683 refuted. 0 times theorem prover too weak. 4811 trivial. 0 not checked. [2019-09-07 14:01:10,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:01:10,770 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 14:01:10,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:11,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:01:11,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:01:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7874 backedges. 5175 proven. 2 refuted. 0 times theorem prover too weak. 2697 trivial. 0 not checked. [2019-09-07 14:01:14,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:01:14,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2019-09-07 14:01:14,823 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 14:01:14,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 14:01:14,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2019-09-07 14:01:14,824 INFO L87 Difference]: Start difference. First operand 184838 states and 204815 transitions. Second operand 19 states. [2019-09-07 14:01:15,427 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-09-07 14:01:18,949 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-07 14:01:21,404 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-07 14:01:23,237 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-07 14:01:24,943 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-07 14:01:27,643 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-07 14:01:28,513 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-07 14:01:33,776 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-09-07 14:01:34,125 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-07 14:01:34,688 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-07 14:01:37,950 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-07 14:01:39,875 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-07 14:01:43,999 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2019-09-07 14:01:45,460 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-07 14:01:47,720 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-07 14:01:49,765 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-07 14:01:50,810 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-09-07 14:01:51,670 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-07 14:01:52,096 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-07 14:01:52,507 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-07 14:02:05,053 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-07 14:02:07,765 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-07 14:02:09,315 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-07 14:02:10,395 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-07 14:02:13,190 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-07 14:02:13,483 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-07 14:02:15,390 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-07 14:02:17,048 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-07 14:02:17,568 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-07 14:02:17,841 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-07 14:02:20,725 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2019-09-07 14:02:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:24,008 INFO L93 Difference]: Finished difference Result 400472 states and 444877 transitions. [2019-09-07 14:02:24,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2019-09-07 14:02:24,008 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 3033 [2019-09-07 14:02:24,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:24,383 INFO L225 Difference]: With dead ends: 400472 [2019-09-07 14:02:24,383 INFO L226 Difference]: Without dead ends: 193919 [2019-09-07 14:02:24,576 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3261 GetRequests, 3122 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7663 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=2632, Invalid=17108, Unknown=0, NotChecked=0, Total=19740 [2019-09-07 14:02:24,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193919 states. [2019-09-07 14:02:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193919 to 187629. [2019-09-07 14:02:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187629 states. [2019-09-07 14:02:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187629 states to 187629 states and 196878 transitions. [2019-09-07 14:02:31,644 INFO L78 Accepts]: Start accepts. Automaton has 187629 states and 196878 transitions. Word has length 3033 [2019-09-07 14:02:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:31,644 INFO L475 AbstractCegarLoop]: Abstraction has 187629 states and 196878 transitions. [2019-09-07 14:02:31,644 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-07 14:02:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 187629 states and 196878 transitions. [2019-09-07 14:02:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2723 [2019-09-07 14:02:31,868 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:31,869 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:02:31,870 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1223010947, now seen corresponding path program 1 times [2019-09-07 14:02:31,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:31,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:31,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:31,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:31,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5417 backedges. 2235 proven. 1112 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2019-09-07 14:02:35,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:02:35,720 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:02:35,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:36,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 14:02:36,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5417 backedges. 3013 proven. 7 refuted. 0 times theorem prover too weak. 2397 trivial. 0 not checked. [2019-09-07 14:02:39,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:02:39,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:02:39,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:02:39,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:02:39,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:02:39,308 INFO L87 Difference]: Start difference. First operand 187629 states and 196878 transitions. Second operand 9 states. [2019-09-07 14:02:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:50,189 INFO L93 Difference]: Finished difference Result 416668 states and 436646 transitions. [2019-09-07 14:02:50,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:02:50,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2722 [2019-09-07 14:02:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:50,729 INFO L225 Difference]: With dead ends: 416668 [2019-09-07 14:02:50,729 INFO L226 Difference]: Without dead ends: 244129 [2019-09-07 14:02:50,957 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2735 GetRequests, 2725 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-09-07 14:02:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244129 states. [2019-09-07 14:02:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244129 to 236428. [2019-09-07 14:02:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236428 states. [2019-09-07 14:02:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236428 states to 236428 states and 246123 transitions. [2019-09-07 14:02:54,119 INFO L78 Accepts]: Start accepts. Automaton has 236428 states and 246123 transitions. Word has length 2722 [2019-09-07 14:02:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:54,120 INFO L475 AbstractCegarLoop]: Abstraction has 236428 states and 246123 transitions. [2019-09-07 14:02:54,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:02:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 236428 states and 246123 transitions. [2019-09-07 14:02:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2845 [2019-09-07 14:02:54,389 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:54,391 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:02:54,391 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:54,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1236655542, now seen corresponding path program 1 times [2019-09-07 14:02:54,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:54,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:54,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:54,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:54,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4776 backedges. 2580 proven. 1371 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2019-09-07 14:03:05,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:05,652 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 14:03:05,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:06,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 3599 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:03:06,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4776 backedges. 3676 proven. 2 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2019-09-07 14:03:09,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:09,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:03:09,294 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:03:09,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:03:09,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:03:09,294 INFO L87 Difference]: Start difference. First operand 236428 states and 246123 transitions. Second operand 14 states. [2019-09-07 14:03:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:33,698 INFO L93 Difference]: Finished difference Result 463324 states and 482687 transitions. [2019-09-07 14:03:33,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-07 14:03:33,699 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2844 [2019-09-07 14:03:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:34,231 INFO L225 Difference]: With dead ends: 463324 [2019-09-07 14:03:34,232 INFO L226 Difference]: Without dead ends: 241152 [2019-09-07 14:03:34,433 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2958 GetRequests, 2895 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=784, Invalid=3376, Unknown=0, NotChecked=0, Total=4160 [2019-09-07 14:03:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241152 states. [2019-09-07 14:03:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241152 to 236634. [2019-09-07 14:03:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236634 states. [2019-09-07 14:03:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236634 states to 236634 states and 245671 transitions. [2019-09-07 14:03:37,379 INFO L78 Accepts]: Start accepts. Automaton has 236634 states and 245671 transitions. Word has length 2844 [2019-09-07 14:03:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:37,381 INFO L475 AbstractCegarLoop]: Abstraction has 236634 states and 245671 transitions. [2019-09-07 14:03:37,381 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:03:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 236634 states and 245671 transitions. [2019-09-07 14:03:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2848 [2019-09-07 14:03:37,656 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:37,657 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:37,658 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:37,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:37,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1541346129, now seen corresponding path program 1 times [2019-09-07 14:03:37,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:37,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:37,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:37,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:37,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6167 backedges. 2606 proven. 1613 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2019-09-07 14:03:46,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:46,191 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 14:03:46,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:46,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 3631 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:03:46,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6167 backedges. 4277 proven. 5 refuted. 0 times theorem prover too weak. 1885 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 14:03:49,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:49,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:03:49,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:03:49,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:03:49,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:03:49,683 INFO L87 Difference]: Start difference. First operand 236634 states and 245671 transitions. Second operand 11 states. [2019-09-07 14:04:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:01,022 INFO L93 Difference]: Finished difference Result 448376 states and 466368 transitions. [2019-09-07 14:04:01,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 14:04:01,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2847 [2019-09-07 14:04:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:01,467 INFO L225 Difference]: With dead ends: 448376 [2019-09-07 14:04:01,468 INFO L226 Difference]: Without dead ends: 226832 [2019-09-07 14:04:01,641 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2885 GetRequests, 2864 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2019-09-07 14:04:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226832 states. [2019-09-07 14:04:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226832 to 220035. [2019-09-07 14:04:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220035 states. [2019-09-07 14:04:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220035 states to 220035 states and 226496 transitions. [2019-09-07 14:04:04,576 INFO L78 Accepts]: Start accepts. Automaton has 220035 states and 226496 transitions. Word has length 2847 [2019-09-07 14:04:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:04,577 INFO L475 AbstractCegarLoop]: Abstraction has 220035 states and 226496 transitions. [2019-09-07 14:04:04,577 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:04:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 220035 states and 226496 transitions. [2019-09-07 14:04:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3149 [2019-09-07 14:04:04,835 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:04,837 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:04,837 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:04,838 INFO L82 PathProgramCache]: Analyzing trace with hash -838986193, now seen corresponding path program 1 times [2019-09-07 14:04:04,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:04,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:04,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:04,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:04,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9023 backedges. 2704 proven. 1708 refuted. 0 times theorem prover too weak. 4611 trivial. 0 not checked. [2019-09-07 14:04:20,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:20,978 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:04:20,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:21,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 4157 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 14:04:21,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9023 backedges. 6278 proven. 8 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2019-09-07 14:04:25,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:04:25,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2019-09-07 14:04:25,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 14:04:25,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 14:04:25,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-09-07 14:04:25,792 INFO L87 Difference]: Start difference. First operand 220035 states and 226496 transitions. Second operand 21 states. [2019-09-07 14:04:26,146 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-07 14:04:26,308 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-07 14:04:27,297 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:04:28,156 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-09-07 14:04:28,587 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 14:04:28,941 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2019-09-07 14:04:29,305 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-07 14:04:35,873 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2019-09-07 14:04:36,393 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-07 14:04:38,332 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-07 14:04:39,403 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-07 14:04:40,104 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-07 14:04:40,505 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-07 14:04:42,450 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-07 14:04:43,233 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2019-09-07 14:04:43,732 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-07 14:04:45,177 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-09-07 14:04:46,711 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-07 14:04:47,074 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2019-09-07 14:04:47,294 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2019-09-07 14:04:47,653 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-07 14:04:47,793 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-07 14:04:49,632 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2019-09-07 14:04:50,110 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2019-09-07 14:04:51,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:51,424 INFO L93 Difference]: Finished difference Result 391115 states and 406680 transitions. [2019-09-07 14:04:51,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-07 14:04:51,424 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 3148 [2019-09-07 14:04:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:51,852 INFO L225 Difference]: With dead ends: 391115 [2019-09-07 14:04:51,852 INFO L226 Difference]: Without dead ends: 186242 [2019-09-07 14:04:52,065 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3258 GetRequests, 3187 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2019-09-07 14:04:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186242 states. [2019-09-07 14:04:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186242 to 180180. [2019-09-07 14:04:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180180 states. [2019-09-07 14:04:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180180 states to 180180 states and 183719 transitions. [2019-09-07 14:04:54,509 INFO L78 Accepts]: Start accepts. Automaton has 180180 states and 183719 transitions. Word has length 3148 [2019-09-07 14:04:54,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:54,510 INFO L475 AbstractCegarLoop]: Abstraction has 180180 states and 183719 transitions. [2019-09-07 14:04:54,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 14:04:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 180180 states and 183719 transitions. [2019-09-07 14:04:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5823 [2019-09-07 14:04:54,870 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:54,872 INFO L399 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 12, 12, 12, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:54,872 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:54,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1295836875, now seen corresponding path program 1 times [2019-09-07 14:04:54,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:54,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:54,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:54,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:54,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 28182 backedges. 5362 proven. 10399 refuted. 0 times theorem prover too weak. 12421 trivial. 0 not checked. [2019-09-07 14:05:22,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:05:22,839 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:05:22,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:24,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 7456 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 14:05:24,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:05:24,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 14:05:24,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 14:05:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 28182 backedges. 11632 proven. 5 refuted. 0 times theorem prover too weak. 16545 trivial. 0 not checked. [2019-09-07 14:05:36,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:05:36,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 27 [2019-09-07 14:05:36,140 INFO L454 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-09-07 14:05:36,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-09-07 14:05:36,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-09-07 14:05:36,141 INFO L87 Difference]: Start difference. First operand 180180 states and 183719 transitions. Second operand 27 states. [2019-09-07 14:05:38,811 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-09-07 14:05:41,848 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-07 14:05:42,414 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-07 14:05:43,238 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-07 14:05:43,597 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-07 14:05:44,515 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-09-07 14:05:45,900 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-07 14:05:46,737 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-07 14:05:48,338 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-07 14:05:50,681 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-07 14:05:51,709 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-07 14:05:52,036 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-07 14:05:54,971 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-07 14:05:56,760 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-07 14:05:58,681 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-07 14:06:00,913 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2019-09-07 14:06:05,042 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-07 14:06:05,627 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-07 14:06:07,301 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-07 14:06:10,027 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-07 14:06:11,843 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2019-09-07 14:06:12,718 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-07 14:06:13,231 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-07 14:06:16,349 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-07 14:06:17,787 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-07 14:06:17,981 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-07 14:06:19,224 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2019-09-07 14:06:20,833 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2019-09-07 14:06:21,270 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-07 14:06:21,744 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-07 14:06:23,720 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-07 14:06:28,805 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2019-09-07 14:06:29,342 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-07 14:06:30,105 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2019-09-07 14:06:30,279 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 14:06:30,708 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-07 14:06:31,605 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2019-09-07 14:06:32,051 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-07 14:06:32,977 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-07 14:06:33,269 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2019-09-07 14:06:33,738 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2019-09-07 14:06:34,218 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2019-09-07 14:06:34,573 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-07 14:06:34,852 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-07 14:06:35,210 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-07 14:06:36,540 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2019-09-07 14:06:36,829 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2019-09-07 14:06:37,282 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-07 14:06:37,773 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-09-07 14:06:38,305 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-07 14:06:38,595 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-07 14:06:38,919 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-07 14:06:39,190 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-07 14:06:39,717 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-07 14:06:40,273 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-07 14:06:40,747 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-07 14:06:41,336 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-07 14:06:42,191 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-07 14:06:42,509 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2019-09-07 14:06:42,991 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2019-09-07 14:06:43,276 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-07 14:06:43,612 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-07 14:06:44,065 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-07 14:06:44,450 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-07 14:06:44,619 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-07 14:06:45,040 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2019-09-07 14:06:45,653 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-07 14:06:46,261 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-07 14:06:46,599 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-07 14:06:47,374 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-07 14:06:47,694 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-07 14:06:48,488 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-07 14:06:48,639 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 14:06:49,160 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-07 14:06:49,414 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-09-07 14:06:49,854 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2019-09-07 14:06:50,115 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2019-09-07 14:06:50,480 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-09-07 14:06:50,738 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-07 14:06:51,260 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 14:06:51,486 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-07 14:06:51,841 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2019-09-07 14:06:52,321 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-07 14:06:52,753 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-09-07 14:06:53,147 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2019-09-07 14:06:53,508 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-07 14:06:53,785 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-07 14:06:54,129 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-07 14:06:54,349 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-07 14:06:54,651 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-07 14:06:54,902 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-09-07 14:06:55,205 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2019-09-07 14:06:55,430 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-07 14:06:55,611 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-07 14:06:55,868 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-07 14:06:56,532 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-07 14:07:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:07:02,224 INFO L93 Difference]: Finished difference Result 318869 states and 325695 transitions. [2019-09-07 14:07:02,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2019-09-07 14:07:02,224 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 5822 [2019-09-07 14:07:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:07:02,614 INFO L225 Difference]: With dead ends: 318869 [2019-09-07 14:07:02,614 INFO L226 Difference]: Without dead ends: 172672 [2019-09-07 14:07:02,769 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6188 GetRequests, 5948 SyntacticMatches, 5 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24004 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=6821, Invalid=49111, Unknown=0, NotChecked=0, Total=55932 [2019-09-07 14:07:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172672 states. [2019-09-07 14:07:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172672 to 171582. [2019-09-07 14:07:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171582 states. [2019-09-07 14:07:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171582 states to 171582 states and 173639 transitions. [2019-09-07 14:07:04,631 INFO L78 Accepts]: Start accepts. Automaton has 171582 states and 173639 transitions. Word has length 5822 [2019-09-07 14:07:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:07:04,632 INFO L475 AbstractCegarLoop]: Abstraction has 171582 states and 173639 transitions. [2019-09-07 14:07:04,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-09-07 14:07:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand 171582 states and 173639 transitions. [2019-09-07 14:07:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5191 [2019-09-07 14:07:04,915 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:07:04,917 INFO L399 BasicCegarLoop]: trace histogram [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, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:04,918 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:07:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:07:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1899147758, now seen corresponding path program 1 times [2019-09-07 14:07:04,919 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:07:04,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:07:04,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:07:04,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:07:04,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:07:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:07:09,534 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-07 14:07:09,779 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-07 14:07:09,977 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-07 14:08:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 23091 backedges. 13541 proven. 5940 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2019-09-07 14:08:05,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:08:05,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:08:05,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:06,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 6677 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:08:06,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:08:06,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 14:08:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23091 backedges. 3885 proven. 2 refuted. 0 times theorem prover too weak. 19204 trivial. 0 not checked. [2019-09-07 14:08:15,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:08:15,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5] total 30 [2019-09-07 14:08:15,487 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-07 14:08:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-07 14:08:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2019-09-07 14:08:15,488 INFO L87 Difference]: Start difference. First operand 171582 states and 173639 transitions. Second operand 30 states. [2019-09-07 14:08:15,826 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-07 14:08:16,250 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2019-09-07 14:08:18,759 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 14:08:18,939 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-07 14:08:19,128 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-07 14:08:19,810 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-07 14:08:20,056 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-07 14:08:24,273 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 14:08:24,644 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-07 14:08:26,136 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2019-09-07 14:08:26,568 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2019-09-07 14:08:27,846 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-07 14:08:28,286 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2019-09-07 14:08:31,576 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-07 14:08:32,389 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-07 14:08:33,061 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 14:08:33,419 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-07 14:08:34,461 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2019-09-07 14:08:35,436 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-07 14:08:36,342 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2019-09-07 14:08:39,743 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-07 14:08:40,100 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-07 14:08:43,100 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-09-07 14:08:49,019 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2019-09-07 14:08:51,511 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2019-09-07 14:08:52,437 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53