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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 14:02:58,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 14:02:58,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 14:02:58,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 14:02:58,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 14:02:58,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 14:02:58,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 14:02:58,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 14:02:58,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 14:02:58,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 14:02:58,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 14:02:58,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 14:02:58,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 14:02:58,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 14:02:58,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 14:02:58,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 14:02:58,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 14:02:58,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 14:02:58,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 14:02:58,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 14:02:58,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 14:02:58,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 14:02:58,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 14:02:58,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 14:02:58,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 14:02:58,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 14:02:58,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 14:02:58,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 14:02:58,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 14:02:58,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 14:02:58,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 14:02:58,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 14:02:58,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 14:02:58,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 14:02:58,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 14:02:58,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 14:02:58,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 14:02:59,000 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 14:02:59,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 14:02:59,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 14:02:59,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 14:02:59,005 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 14:02:59,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 14:02:59,005 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 14:02:59,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 14:02:59,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 14:02:59,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 14:02:59,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 14:02:59,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 14:02:59,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 14:02:59,007 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 14:02:59,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 14:02:59,007 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 14:02:59,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 14:02:59,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 14:02:59,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 14:02:59,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 14:02:59,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 14:02:59,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:02:59,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 14:02:59,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 14:02:59,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 14:02:59,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 14:02:59,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 14:02:59,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 14:02:59,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 14:02:59,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 14:02:59,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 14:02:59,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 14:02:59,091 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 14:02:59,092 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 14:02:59,092 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2019-09-07 14:02:59,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd236ed5/72af3c97773c4dd68343dd9967aa4350/FLAGbc5438d20 [2019-09-07 14:02:59,893 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 14:02:59,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2019-09-07 14:02:59,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd236ed5/72af3c97773c4dd68343dd9967aa4350/FLAGbc5438d20 [2019-09-07 14:02:59,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd236ed5/72af3c97773c4dd68343dd9967aa4350 [2019-09-07 14:03:00,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 14:03:00,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 14:03:00,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 14:03:00,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 14:03:00,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 14:03:00,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:02:59" (1/1) ... [2019-09-07 14:03:00,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772df1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:00, skipping insertion in model container [2019-09-07 14:03:00,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:02:59" (1/1) ... [2019-09-07 14:03:00,033 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 14:03:00,196 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 14:03:01,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:03:01,718 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 14:03:02,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:03:02,497 INFO L192 MainTranslator]: Completed translation [2019-09-07 14:03:02,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02 WrapperNode [2019-09-07 14:03:02,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 14:03:02,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 14:03:02,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 14:03:02,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 14:03:02,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... [2019-09-07 14:03:02,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 14:03:02,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 14:03:02,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 14:03:02,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 14:03:02,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:03:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 14:03:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 14:03:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 14:03:02,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 14:03:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 14:03:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 14:03:02,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 14:03:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 14:03:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 14:03:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 14:03:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 14:03:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 14:03:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 14:03:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 14:03:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 14:03:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 14:03:02,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 14:03:07,923 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 14:03:07,923 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 14:03:07,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:03:07 BoogieIcfgContainer [2019-09-07 14:03:07,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 14:03:07,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 14:03:07,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 14:03:07,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 14:03:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:02:59" (1/3) ... [2019-09-07 14:03:07,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccbae59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:03:07, skipping insertion in model container [2019-09-07 14:03:07,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:03:02" (2/3) ... [2019-09-07 14:03:07,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccbae59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:03:07, skipping insertion in model container [2019-09-07 14:03:07,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:03:07" (3/3) ... [2019-09-07 14:03:07,942 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label40.c [2019-09-07 14:03:07,955 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 14:03:07,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 14:03:07,986 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 14:03:08,040 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 14:03:08,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 14:03:08,041 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 14:03:08,041 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 14:03:08,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 14:03:08,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 14:03:08,042 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 14:03:08,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 14:03:08,042 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 14:03:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 14:03:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-09-07 14:03:08,148 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:08,150 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] [2019-09-07 14:03:08,152 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:08,160 INFO L82 PathProgramCache]: Analyzing trace with hash -428047974, now seen corresponding path program 1 times [2019-09-07 14:03:08,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:08,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:08,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:08,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:08,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:10,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:03:10,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:03:10,724 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:03:10,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:03:10,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:03:10,738 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 14:03:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:15,628 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 14:03:15,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:03:15,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 775 [2019-09-07 14:03:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:15,698 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 14:03:15,698 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 14:03:15,718 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:03:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 14:03:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 14:03:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 14:03:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2968 transitions. [2019-09-07 14:03:15,922 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2968 transitions. Word has length 775 [2019-09-07 14:03:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:15,926 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 2968 transitions. [2019-09-07 14:03:15,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:03:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2968 transitions. [2019-09-07 14:03:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2019-09-07 14:03:15,960 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:15,961 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 14:03:15,962 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:15,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash -766713375, now seen corresponding path program 1 times [2019-09-07 14:03:15,963 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:15,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:15,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:15,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:15,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:16,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:03:16,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:03:16,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:03:16,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:03:16,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:03:16,679 INFO L87 Difference]: Start difference. First operand 1676 states and 2968 transitions. Second operand 6 states. [2019-09-07 14:03:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:23,560 INFO L93 Difference]: Finished difference Result 5125 states and 9149 transitions. [2019-09-07 14:03:23,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:03:23,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 790 [2019-09-07 14:03:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:23,591 INFO L225 Difference]: With dead ends: 5125 [2019-09-07 14:03:23,592 INFO L226 Difference]: Without dead ends: 3455 [2019-09-07 14:03:23,598 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:03:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2019-09-07 14:03:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3395. [2019-09-07 14:03:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2019-09-07 14:03:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 5897 transitions. [2019-09-07 14:03:23,782 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 5897 transitions. Word has length 790 [2019-09-07 14:03:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:23,782 INFO L475 AbstractCegarLoop]: Abstraction has 3395 states and 5897 transitions. [2019-09-07 14:03:23,782 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:03:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 5897 transitions. [2019-09-07 14:03:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2019-09-07 14:03:23,800 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:23,801 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:03:23,802 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:23,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2094184173, now seen corresponding path program 1 times [2019-09-07 14:03:23,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:23,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:23,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:23,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:23,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:24,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:03:24,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:03:24,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:03:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:03:24,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:03:24,684 INFO L87 Difference]: Start difference. First operand 3395 states and 5897 transitions. Second operand 6 states. [2019-09-07 14:03:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:30,573 INFO L93 Difference]: Finished difference Result 8634 states and 14906 transitions. [2019-09-07 14:03:30,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 14:03:30,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 803 [2019-09-07 14:03:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:30,609 INFO L225 Difference]: With dead ends: 8634 [2019-09-07 14:03:30,610 INFO L226 Difference]: Without dead ends: 5245 [2019-09-07 14:03:30,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:03:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2019-09-07 14:03:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 5216. [2019-09-07 14:03:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5216 states. [2019-09-07 14:03:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 7991 transitions. [2019-09-07 14:03:30,758 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 7991 transitions. Word has length 803 [2019-09-07 14:03:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:30,759 INFO L475 AbstractCegarLoop]: Abstraction has 5216 states and 7991 transitions. [2019-09-07 14:03:30,759 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:03:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 7991 transitions. [2019-09-07 14:03:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2019-09-07 14:03:30,781 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:30,782 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:30,782 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash -240138446, now seen corresponding path program 1 times [2019-09-07 14:03:30,783 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:30,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:30,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:30,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:30,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:31,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:31,442 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 14:03:31,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:31,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:03:31,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 14:03:32,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:03:32,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 14:03:32,906 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 14:03:32,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 14:03:32,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 14:03:32,907 INFO L87 Difference]: Start difference. First operand 5216 states and 7991 transitions. Second operand 7 states. [2019-09-07 14:03:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:44,203 INFO L93 Difference]: Finished difference Result 21250 states and 34163 transitions. [2019-09-07 14:03:44,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 14:03:44,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 809 [2019-09-07 14:03:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:44,297 INFO L225 Difference]: With dead ends: 21250 [2019-09-07 14:03:44,298 INFO L226 Difference]: Without dead ends: 16040 [2019-09-07 14:03:44,315 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 14:03:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16040 states. [2019-09-07 14:03:44,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16040 to 15958. [2019-09-07 14:03:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15958 states. [2019-09-07 14:03:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15958 states to 15958 states and 23383 transitions. [2019-09-07 14:03:44,774 INFO L78 Accepts]: Start accepts. Automaton has 15958 states and 23383 transitions. Word has length 809 [2019-09-07 14:03:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:44,775 INFO L475 AbstractCegarLoop]: Abstraction has 15958 states and 23383 transitions. [2019-09-07 14:03:44,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 14:03:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15958 states and 23383 transitions. [2019-09-07 14:03:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2019-09-07 14:03:44,848 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:44,849 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:44,850 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:44,851 INFO L82 PathProgramCache]: Analyzing trace with hash -847774213, now seen corresponding path program 1 times [2019-09-07 14:03:44,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:44,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:44,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:44,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:44,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:45,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:03:45,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:03:45,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:03:45,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:03:45,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:03:45,743 INFO L87 Difference]: Start difference. First operand 15958 states and 23383 transitions. Second operand 6 states. [2019-09-07 14:03:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:52,064 INFO L93 Difference]: Finished difference Result 41632 states and 63441 transitions. [2019-09-07 14:03:52,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 14:03:52,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 855 [2019-09-07 14:03:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:52,284 INFO L225 Difference]: With dead ends: 41632 [2019-09-07 14:03:52,284 INFO L226 Difference]: Without dead ends: 25680 [2019-09-07 14:03:52,328 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:03:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25680 states. [2019-09-07 14:03:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25680 to 25573. [2019-09-07 14:03:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25573 states. [2019-09-07 14:03:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25573 states to 25573 states and 36904 transitions. [2019-09-07 14:03:52,949 INFO L78 Accepts]: Start accepts. Automaton has 25573 states and 36904 transitions. Word has length 855 [2019-09-07 14:03:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:52,950 INFO L475 AbstractCegarLoop]: Abstraction has 25573 states and 36904 transitions. [2019-09-07 14:03:52,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:03:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 25573 states and 36904 transitions. [2019-09-07 14:03:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2019-09-07 14:03:53,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:53,043 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:53,043 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:53,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:53,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2015135028, now seen corresponding path program 1 times [2019-09-07 14:03:53,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:53,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:53,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:53,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:53,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:54,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:54,054 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 14:03:54,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:03:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:54,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:03:54,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:55,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:55,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:03:55,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:03:55,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:03:55,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:03:55,087 INFO L87 Difference]: Start difference. First operand 25573 states and 36904 transitions. Second operand 9 states. [2019-09-07 14:04:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:08,949 INFO L93 Difference]: Finished difference Result 91890 states and 151323 transitions. [2019-09-07 14:04:08,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 14:04:08,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 863 [2019-09-07 14:04:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:09,303 INFO L225 Difference]: With dead ends: 91890 [2019-09-07 14:04:09,305 INFO L226 Difference]: Without dead ends: 66323 [2019-09-07 14:04:09,428 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:04:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66323 states. [2019-09-07 14:04:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66323 to 63469. [2019-09-07 14:04:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63469 states. [2019-09-07 14:04:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63469 states to 63469 states and 91763 transitions. [2019-09-07 14:04:11,252 INFO L78 Accepts]: Start accepts. Automaton has 63469 states and 91763 transitions. Word has length 863 [2019-09-07 14:04:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:11,253 INFO L475 AbstractCegarLoop]: Abstraction has 63469 states and 91763 transitions. [2019-09-07 14:04:11,253 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:04:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 63469 states and 91763 transitions. [2019-09-07 14:04:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2019-09-07 14:04:11,472 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:11,473 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:11,474 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:11,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:11,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1266702995, now seen corresponding path program 1 times [2019-09-07 14:04:11,475 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:11,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:11,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:11,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:11,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 129 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-07 14:04:13,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:13,870 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:04:13,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:14,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:04:14,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-07 14:04:14,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:04:14,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:04:14,916 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:04:14,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:04:14,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:04:14,917 INFO L87 Difference]: Start difference. First operand 63469 states and 91763 transitions. Second operand 9 states. [2019-09-07 14:04:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:28,658 INFO L93 Difference]: Finished difference Result 176444 states and 267169 transitions. [2019-09-07 14:04:28,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 14:04:28,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 896 [2019-09-07 14:04:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:29,011 INFO L225 Difference]: With dead ends: 176444 [2019-09-07 14:04:29,011 INFO L226 Difference]: Without dead ends: 112981 [2019-09-07 14:04:29,138 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 14:04:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112981 states. [2019-09-07 14:04:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112981 to 96526. [2019-09-07 14:04:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96526 states. [2019-09-07 14:04:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96526 states to 96526 states and 128021 transitions. [2019-09-07 14:04:34,171 INFO L78 Accepts]: Start accepts. Automaton has 96526 states and 128021 transitions. Word has length 896 [2019-09-07 14:04:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:34,174 INFO L475 AbstractCegarLoop]: Abstraction has 96526 states and 128021 transitions. [2019-09-07 14:04:34,174 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:04:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 96526 states and 128021 transitions. [2019-09-07 14:04:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2019-09-07 14:04:34,422 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:34,423 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:04:34,424 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:34,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1815736422, now seen corresponding path program 1 times [2019-09-07 14:04:34,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:34,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:34,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:34,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:34,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 384 proven. 76 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:04:36,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:36,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:04:36,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:36,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 14:04:36,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-07 14:04:37,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:04:37,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 14:04:37,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:04:37,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:04:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:04:37,701 INFO L87 Difference]: Start difference. First operand 96526 states and 128021 transitions. Second operand 9 states. [2019-09-07 14:04:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:44,966 INFO L93 Difference]: Finished difference Result 220490 states and 301208 transitions. [2019-09-07 14:04:44,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:04:44,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1168 [2019-09-07 14:04:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:45,343 INFO L225 Difference]: With dead ends: 220490 [2019-09-07 14:04:45,344 INFO L226 Difference]: Without dead ends: 123970 [2019-09-07 14:04:45,489 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1173 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 14:04:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123970 states. [2019-09-07 14:04:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123970 to 115962. [2019-09-07 14:04:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115962 states. [2019-09-07 14:04:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115962 states to 115962 states and 143448 transitions. [2019-09-07 14:04:50,091 INFO L78 Accepts]: Start accepts. Automaton has 115962 states and 143448 transitions. Word has length 1168 [2019-09-07 14:04:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:50,092 INFO L475 AbstractCegarLoop]: Abstraction has 115962 states and 143448 transitions. [2019-09-07 14:04:50,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:04:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 115962 states and 143448 transitions. [2019-09-07 14:04:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1319 [2019-09-07 14:04:50,200 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:50,201 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:04:50,201 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:50,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1073622131, now seen corresponding path program 1 times [2019-09-07 14:04:50,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:50,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:50,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:50,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:50,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 536 proven. 301 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:04:52,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:52,549 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:04:52,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:52,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:04:52,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 692 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-09-07 14:04:54,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:04:54,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:04:54,678 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:04:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:04:54,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:04:54,679 INFO L87 Difference]: Start difference. First operand 115962 states and 143448 transitions. Second operand 14 states. [2019-09-07 14:05:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:05:15,218 INFO L93 Difference]: Finished difference Result 238204 states and 305279 transitions. [2019-09-07 14:05:15,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-09-07 14:05:15,219 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1318 [2019-09-07 14:05:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:05:15,555 INFO L225 Difference]: With dead ends: 238204 [2019-09-07 14:05:15,555 INFO L226 Difference]: Without dead ends: 122248 [2019-09-07 14:05:15,679 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=940, Invalid=4462, Unknown=0, NotChecked=0, Total=5402 [2019-09-07 14:05:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122248 states. [2019-09-07 14:05:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122248 to 121635. [2019-09-07 14:05:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121635 states. [2019-09-07 14:05:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121635 states to 121635 states and 150698 transitions. [2019-09-07 14:05:17,830 INFO L78 Accepts]: Start accepts. Automaton has 121635 states and 150698 transitions. Word has length 1318 [2019-09-07 14:05:17,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:05:17,831 INFO L475 AbstractCegarLoop]: Abstraction has 121635 states and 150698 transitions. [2019-09-07 14:05:17,833 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:05:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 121635 states and 150698 transitions. [2019-09-07 14:05:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1466 [2019-09-07 14:05:17,961 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:05:17,961 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:05:17,962 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:05:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:05:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash 677345798, now seen corresponding path program 1 times [2019-09-07 14:05:17,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:05:17,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:05:17,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:17,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:17,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 889 proven. 470 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2019-09-07 14:05:21,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:05:21,678 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:05:21,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:22,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:05:22,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:05:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 1273 proven. 2 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-09-07 14:05:22,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:05:22,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:05:22,939 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:05:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:05:22,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:05:22,940 INFO L87 Difference]: Start difference. First operand 121635 states and 150698 transitions. Second operand 11 states. [2019-09-07 14:05:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:05:42,902 INFO L93 Difference]: Finished difference Result 294853 states and 378277 transitions. [2019-09-07 14:05:42,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 14:05:42,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1465 [2019-09-07 14:05:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:05:43,418 INFO L225 Difference]: With dead ends: 294853 [2019-09-07 14:05:43,418 INFO L226 Difference]: Without dead ends: 173224 [2019-09-07 14:05:43,600 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1501 GetRequests, 1478 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2019-09-07 14:05:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173224 states. [2019-09-07 14:05:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173224 to 171853. [2019-09-07 14:05:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171853 states. [2019-09-07 14:05:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171853 states to 171853 states and 212127 transitions. [2019-09-07 14:05:46,339 INFO L78 Accepts]: Start accepts. Automaton has 171853 states and 212127 transitions. Word has length 1465 [2019-09-07 14:05:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:05:46,339 INFO L475 AbstractCegarLoop]: Abstraction has 171853 states and 212127 transitions. [2019-09-07 14:05:46,340 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:05:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 171853 states and 212127 transitions. [2019-09-07 14:05:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1604 [2019-09-07 14:05:46,604 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:05:46,605 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:05:46,605 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:05:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:05:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2010854735, now seen corresponding path program 1 times [2019-09-07 14:05:46,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:05:46,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:05:46,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:46,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:46,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 872 proven. 207 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2019-09-07 14:05:48,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:05:48,811 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 14:05:48,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:49,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:05:49,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:05:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 1531 proven. 2 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2019-09-07 14:05:52,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:05:52,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-09-07 14:05:52,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 14:05:52,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 14:05:52,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 14:05:52,655 INFO L87 Difference]: Start difference. First operand 171853 states and 212127 transitions. Second operand 10 states. [2019-09-07 14:06:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:06:12,629 INFO L93 Difference]: Finished difference Result 391967 states and 496320 transitions. [2019-09-07 14:06:12,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-07 14:06:12,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1603 [2019-09-07 14:06:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:06:13,159 INFO L225 Difference]: With dead ends: 391967 [2019-09-07 14:06:13,159 INFO L226 Difference]: Without dead ends: 207544 [2019-09-07 14:06:13,370 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1673 GetRequests, 1628 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 14:06:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207544 states. [2019-09-07 14:06:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207544 to 202477. [2019-09-07 14:06:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202477 states. [2019-09-07 14:06:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202477 states to 202477 states and 219882 transitions. [2019-09-07 14:06:16,273 INFO L78 Accepts]: Start accepts. Automaton has 202477 states and 219882 transitions. Word has length 1603 [2019-09-07 14:06:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:06:16,273 INFO L475 AbstractCegarLoop]: Abstraction has 202477 states and 219882 transitions. [2019-09-07 14:06:16,274 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 14:06:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 202477 states and 219882 transitions. [2019-09-07 14:06:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1611 [2019-09-07 14:06:16,477 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:06:16,478 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 14:06:16,479 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:06:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:06:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1673402296, now seen corresponding path program 1 times [2019-09-07 14:06:16,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:06:16,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:06:16,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:16,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:16,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 1280 proven. 202 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2019-09-07 14:06:21,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:06:21,264 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 14:06:21,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:21,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:06:21,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:06:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 1559 proven. 2 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2019-09-07 14:06:22,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:06:22,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 14:06:22,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 14:06:22,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 14:06:22,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:06:22,655 INFO L87 Difference]: Start difference. First operand 202477 states and 219882 transitions. Second operand 15 states. [2019-09-07 14:06:39,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:06:39,708 INFO L93 Difference]: Finished difference Result 367780 states and 396483 transitions. [2019-09-07 14:06:39,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-07 14:06:39,708 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1610 [2019-09-07 14:06:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:06:40,021 INFO L225 Difference]: With dead ends: 367780 [2019-09-07 14:06:40,021 INFO L226 Difference]: Without dead ends: 166143 [2019-09-07 14:06:40,162 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1639 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=462, Invalid=1608, Unknown=0, NotChecked=0, Total=2070 [2019-09-07 14:06:40,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166143 states. [2019-09-07 14:06:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166143 to 161497. [2019-09-07 14:06:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161497 states. [2019-09-07 14:06:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161497 states to 161497 states and 169996 transitions. [2019-09-07 14:06:42,695 INFO L78 Accepts]: Start accepts. Automaton has 161497 states and 169996 transitions. Word has length 1610 [2019-09-07 14:06:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:06:42,697 INFO L475 AbstractCegarLoop]: Abstraction has 161497 states and 169996 transitions. [2019-09-07 14:06:42,697 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 14:06:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 161497 states and 169996 transitions. [2019-09-07 14:06:42,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2019-09-07 14:06:42,820 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:06:42,821 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:06:42,821 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:06:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:06:42,822 INFO L82 PathProgramCache]: Analyzing trace with hash 476440672, now seen corresponding path program 1 times [2019-09-07 14:06:42,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:06:42,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:06:42,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:42,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:42,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 920 proven. 354 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-09-07 14:06:47,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:06:47,181 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 14:06:47,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:47,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:06:47,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:06:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 467 proven. 2 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2019-09-07 14:06:48,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:06:48,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:06:48,640 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:06:48,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:06:48,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:06:48,641 INFO L87 Difference]: Start difference. First operand 161497 states and 169996 transitions. Second operand 14 states. [2019-09-07 14:07:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:07:07,345 INFO L93 Difference]: Finished difference Result 347153 states and 367702 transitions. [2019-09-07 14:07:07,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-09-07 14:07:07,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1699 [2019-09-07 14:07:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:07:07,714 INFO L225 Difference]: With dead ends: 347153 [2019-09-07 14:07:07,714 INFO L226 Difference]: Without dead ends: 186496 [2019-09-07 14:07:07,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1784 GetRequests, 1734 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=2020, Unknown=0, NotChecked=0, Total=2550 [2019-09-07 14:07:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186496 states. [2019-09-07 14:07:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186496 to 182985. [2019-09-07 14:07:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182985 states. [2019-09-07 14:07:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182985 states to 182985 states and 190472 transitions. [2019-09-07 14:07:10,098 INFO L78 Accepts]: Start accepts. Automaton has 182985 states and 190472 transitions. Word has length 1699 [2019-09-07 14:07:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:07:10,099 INFO L475 AbstractCegarLoop]: Abstraction has 182985 states and 190472 transitions. [2019-09-07 14:07:10,099 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:07:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 182985 states and 190472 transitions. [2019-09-07 14:07:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1856 [2019-09-07 14:07:10,239 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:07:10,240 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:07:10,241 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:07:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:07:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1775623091, now seen corresponding path program 1 times [2019-09-07 14:07:10,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:07:10,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:07:10,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:07:10,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:07:10,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:07:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:07:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 1313 proven. 461 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-09-07 14:07:26,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:07:26,469 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 14:07:26,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:07:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:07:26,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:07:26,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:07:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 1329 proven. 2 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2019-09-07 14:07:28,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:07:28,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5] total 22 [2019-09-07 14:07:28,163 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 14:07:28,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 14:07:28,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2019-09-07 14:07:28,164 INFO L87 Difference]: Start difference. First operand 182985 states and 190472 transitions. Second operand 22 states. [2019-09-07 14:07:28,486 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2019-09-07 14:07:35,375 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2019-09-07 14:07:37,224 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-07 14:07:38,534 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 14:07:39,516 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-07 14:07:42,516 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-07 14:07:42,679 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2019-09-07 14:07:42,945 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-07 14:07:43,312 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2019-09-07 14:07:44,968 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 14:07:47,243 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-07 14:07:50,021 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2019-09-07 14:07:50,738 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2019-09-07 14:07:51,819 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-07 14:07:52,958 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-07 14:07:53,197 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2019-09-07 14:07:53,768 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-07 14:07:55,120 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-07 14:07:55,902 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-07 14:07:56,179 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-07 14:07:56,395 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-07 14:07:58,310 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-07 14:07:58,573 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 14:07:58,781 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2019-09-07 14:07:59,436 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2019-09-07 14:07:59,898 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2019-09-07 14:08:00,367 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-07 14:08:01,035 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2019-09-07 14:08:01,684 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-09-07 14:08:01,991 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-07 14:08:02,484 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 14:08:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:08:05,046 INFO L93 Difference]: Finished difference Result 363208 states and 382970 transitions. [2019-09-07 14:08:05,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2019-09-07 14:08:05,047 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1855 [2019-09-07 14:08:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:08:05,417 INFO L225 Difference]: With dead ends: 363208 [2019-09-07 14:08:05,418 INFO L226 Difference]: Without dead ends: 185228 [2019-09-07 14:08:05,523 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2036 GetRequests, 1929 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4204 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1818, Invalid=9954, Unknown=0, NotChecked=0, Total=11772 [2019-09-07 14:08:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185228 states. [2019-09-07 14:08:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185228 to 170644. [2019-09-07 14:08:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170644 states. [2019-09-07 14:08:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170644 states to 170644 states and 175902 transitions. [2019-09-07 14:08:07,418 INFO L78 Accepts]: Start accepts. Automaton has 170644 states and 175902 transitions. Word has length 1855 [2019-09-07 14:08:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:08:07,419 INFO L475 AbstractCegarLoop]: Abstraction has 170644 states and 175902 transitions. [2019-09-07 14:08:07,419 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-07 14:08:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 170644 states and 175902 transitions. [2019-09-07 14:08:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1938 [2019-09-07 14:08:08,045 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:08:08,046 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:08:08,046 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:08:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:08:08,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1611746729, now seen corresponding path program 1 times [2019-09-07 14:08:08,047 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:08:08,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:08:08,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:08:08,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:08,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:08:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 1601 proven. 170 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2019-09-07 14:08:11,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:08:11,081 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 14:08:11,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:11,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:08:11,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:08:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 1912 proven. 2 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2019-09-07 14:08:13,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:08:13,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:08:13,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:08:13,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:08:13,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:08:13,635 INFO L87 Difference]: Start difference. First operand 170644 states and 175902 transitions. Second operand 11 states. [2019-09-07 14:08:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:08:26,098 INFO L93 Difference]: Finished difference Result 343042 states and 353512 transitions. [2019-09-07 14:08:26,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 14:08:26,098 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1937 [2019-09-07 14:08:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:08:26,427 INFO L225 Difference]: With dead ends: 343042 [2019-09-07 14:08:26,428 INFO L226 Difference]: Without dead ends: 175727 [2019-09-07 14:08:26,567 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1964 GetRequests, 1945 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 14:08:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175727 states. [2019-09-07 14:08:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175727 to 167352. [2019-09-07 14:08:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167352 states. [2019-09-07 14:08:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167352 states to 167352 states and 171102 transitions. [2019-09-07 14:08:28,841 INFO L78 Accepts]: Start accepts. Automaton has 167352 states and 171102 transitions. Word has length 1937 [2019-09-07 14:08:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:08:28,842 INFO L475 AbstractCegarLoop]: Abstraction has 167352 states and 171102 transitions. [2019-09-07 14:08:28,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:08:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 167352 states and 171102 transitions. [2019-09-07 14:08:28,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1980 [2019-09-07 14:08:28,957 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:08:28,959 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:08:28,959 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:08:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:08:28,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1131375137, now seen corresponding path program 1 times [2019-09-07 14:08:28,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:08:28,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:08:28,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:08:28,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:28,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:08:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:30,153 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-07 14:08:30,317 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-07 14:08:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 1612 proven. 391 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2019-09-07 14:08:43,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:08:43,740 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 14:08:43,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:08:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:08:44,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 14:08:44,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:08:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 1422 proven. 76 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2019-09-07 14:08:46,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:08:46,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 4] total 18 [2019-09-07 14:08:46,021 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 14:08:46,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 14:08:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-09-07 14:08:46,021 INFO L87 Difference]: Start difference. First operand 167352 states and 171102 transitions. Second operand 18 states. [2019-09-07 14:08:46,335 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-07 14:08:48,738 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2019-09-07 14:08:48,893 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2019-09-07 14:08:49,247 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-09-07 14:08:49,639 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-07 14:08:50,248 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-07 14:08:52,604 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2019-09-07 14:08:53,794 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-07 14:08:55,794 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-07 14:08:59,698 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2019-09-07 14:09:00,238 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-09-07 14:09:01,317 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2019-09-07 14:09:03,533 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2019-09-07 14:09:03,782 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-07 14:09:04,219 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2019-09-07 14:09:05,148 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-07 14:09:06,163 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2019-09-07 14:09:06,637 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-07 14:09:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:09:07,728 INFO L93 Difference]: Finished difference Result 330116 states and 339512 transitions. [2019-09-07 14:09:07,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-07 14:09:07,728 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1979 [2019-09-07 14:09:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:09:08,044 INFO L225 Difference]: With dead ends: 330116 [2019-09-07 14:09:08,044 INFO L226 Difference]: Without dead ends: 166948 [2019-09-07 14:09:08,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2063 GetRequests, 2010 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=677, Invalid=2293, Unknown=0, NotChecked=0, Total=2970 [2019-09-07 14:09:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166948 states. [2019-09-07 14:09:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166948 to 162742. [2019-09-07 14:09:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162742 states. [2019-09-07 14:09:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162742 states to 162742 states and 165330 transitions. [2019-09-07 14:09:09,686 INFO L78 Accepts]: Start accepts. Automaton has 162742 states and 165330 transitions. Word has length 1979 [2019-09-07 14:09:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:09:09,687 INFO L475 AbstractCegarLoop]: Abstraction has 162742 states and 165330 transitions. [2019-09-07 14:09:09,687 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 14:09:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 162742 states and 165330 transitions. [2019-09-07 14:09:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4507 [2019-09-07 14:09:09,916 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:09:09,918 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:09,918 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:09:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:09:09,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1830365826, now seen corresponding path program 1 times [2019-09-07 14:09:09,919 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:09:09,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:09:09,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:09:09,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:09:09,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:09:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:09:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18809 backedges. 4476 proven. 1807 refuted. 0 times theorem prover too weak. 12526 trivial. 0 not checked. [2019-09-07 14:09:19,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:09:19,879 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 14:09:19,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:09:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:09:21,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 5844 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:09:21,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:09:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18809 backedges. 8775 proven. 2 refuted. 0 times theorem prover too weak. 10032 trivial. 0 not checked. [2019-09-07 14:09:27,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:09:27,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 14:09:27,527 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 14:09:27,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 14:09:27,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:09:27,527 INFO L87 Difference]: Start difference. First operand 162742 states and 165330 transitions. Second operand 15 states. [2019-09-07 14:09:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:09:42,667 INFO L93 Difference]: Finished difference Result 321139 states and 326623 transitions. [2019-09-07 14:09:42,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-09-07 14:09:42,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 4506 [2019-09-07 14:09:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:09:42,948 INFO L225 Difference]: With dead ends: 321139 [2019-09-07 14:09:42,948 INFO L226 Difference]: Without dead ends: 161747 [2019-09-07 14:09:43,049 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4586 GetRequests, 4539 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=518, Invalid=1834, Unknown=0, NotChecked=0, Total=2352 [2019-09-07 14:09:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161747 states. [2019-09-07 14:09:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161747 to 145447. [2019-09-07 14:09:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145447 states. [2019-09-07 14:09:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145447 states to 145447 states and 147146 transitions. [2019-09-07 14:09:44,507 INFO L78 Accepts]: Start accepts. Automaton has 145447 states and 147146 transitions. Word has length 4506 [2019-09-07 14:09:44,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:09:44,508 INFO L475 AbstractCegarLoop]: Abstraction has 145447 states and 147146 transitions. [2019-09-07 14:09:44,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 14:09:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 145447 states and 147146 transitions. [2019-09-07 14:09:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4522 [2019-09-07 14:09:44,709 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:09:44,711 INFO L399 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:09:44,711 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:09:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:09:44,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1648523769, now seen corresponding path program 1 times [2019-09-07 14:09:44,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:09:44,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:09:44,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:09:44,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:09:44,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:09:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:10:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 19244 backedges. 4004 proven. 5003 refuted. 0 times theorem prover too weak. 10237 trivial. 0 not checked. [2019-09-07 14:10:07,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:10:07,989 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 14:10:08,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:10:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:10:09,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 5952 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-07 14:10:09,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:10:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 19244 backedges. 5957 proven. 2 refuted. 0 times theorem prover too weak. 13285 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 14:10:21,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:10:21,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 22 [2019-09-07 14:10:21,866 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 14:10:21,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 14:10:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2019-09-07 14:10:21,867 INFO L87 Difference]: Start difference. First operand 145447 states and 147146 transitions. Second operand 22 states. [2019-09-07 14:10:22,398 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2019-09-07 14:10:22,888 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-07 14:10:23,051 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-07 14:10:24,120 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2019-09-07 14:10:24,497 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2019-09-07 14:10:25,244 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-07 14:10:26,937 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2019-09-07 14:10:27,424 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-07 14:10:27,756 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2019-09-07 14:10:28,269 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 14:10:28,672 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-09-07 14:10:29,285 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2019-09-07 14:10:29,782 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2019-09-07 14:10:30,463 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2019-09-07 14:10:32,047 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-09-07 14:10:34,525 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2019-09-07 14:10:36,444 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2019-09-07 14:10:36,758 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2019-09-07 14:10:36,989 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-07 14:10:41,138 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-07 14:10:43,797 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-07 14:10:44,588 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2019-09-07 14:10:44,811 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2019-09-07 14:10:45,450 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2019-09-07 14:10:46,554 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2019-09-07 14:10:51,136 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-09-07 14:10:51,404 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2019-09-07 14:10:52,043 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2019-09-07 14:10:52,716 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-07 14:10:55,536 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2019-09-07 14:10:58,370 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2019-09-07 14:10:59,203 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 40 [2019-09-07 14:11:00,714 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2019-09-07 14:11:01,668 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2019-09-07 14:11:01,902 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-07 14:11:03,488 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-07 14:11:05,599 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2019-09-07 14:11:05,851 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-07 14:11:06,202 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2019-09-07 14:11:06,576 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2019-09-07 14:11:07,032 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-07 14:11:08,487 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-07 14:11:08,670 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2019-09-07 14:11:09,557 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-07 14:11:10,264 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-07 14:11:10,716 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 14:11:11,389 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-07 14:11:11,577 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-07 14:11:11,820 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-09-07 14:11:12,118 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2019-09-07 14:11:12,752 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-09-07 14:11:13,362 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-07 14:11:13,590 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-07 14:11:13,800 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2019-09-07 14:11:14,040 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-09-07 14:11:14,197 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2019-09-07 14:11:14,415 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 14:11:14,769 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-09-07 14:11:16,065 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 14:11:16,419 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2019-09-07 14:11:17,358 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 14:11:17,896 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2019-09-07 14:11:18,383 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-07 14:11:18,538 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-07 14:11:19,331 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 14:11:19,679 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2019-09-07 14:11:19,991 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-07 14:11:20,448 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2019-09-07 14:11:20,745 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2019-09-07 14:11:21,113 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-07 14:11:21,504 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2019-09-07 14:11:21,803 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-07 14:11:21,940 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-07 14:11:22,529 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2019-09-07 14:11:23,018 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2019-09-07 14:11:23,220 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2019-09-07 14:11:23,567 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2019-09-07 14:11:23,738 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 14:11:24,079 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-07 14:11:24,335 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-07 14:11:24,886 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-07 14:11:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:11:25,401 INFO L93 Difference]: Finished difference Result 292293 states and 296132 transitions. [2019-09-07 14:11:25,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2019-09-07 14:11:25,402 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 4521 [2019-09-07 14:11:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:11:26,011 INFO L225 Difference]: With dead ends: 292293 [2019-09-07 14:11:26,011 INFO L226 Difference]: Without dead ends: 149358 [2019-09-07 14:11:26,102 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4801 GetRequests, 4623 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13422 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=4533, Invalid=27329, Unknown=0, NotChecked=0, Total=31862 [2019-09-07 14:11:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149358 states. [2019-09-07 14:11:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149358 to 145439. [2019-09-07 14:11:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145439 states. [2019-09-07 14:11:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145439 states to 145439 states and 147040 transitions. [2019-09-07 14:11:27,338 INFO L78 Accepts]: Start accepts. Automaton has 145439 states and 147040 transitions. Word has length 4521 [2019-09-07 14:11:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:11:27,339 INFO L475 AbstractCegarLoop]: Abstraction has 145439 states and 147040 transitions. [2019-09-07 14:11:27,339 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-07 14:11:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 145439 states and 147040 transitions. [2019-09-07 14:11:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4785 [2019-09-07 14:11:27,546 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:11:27,548 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:27,548 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:11:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:11:27,550 INFO L82 PathProgramCache]: Analyzing trace with hash 898807485, now seen corresponding path program 1 times [2019-09-07 14:11:27,550 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:11:27,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:11:27,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:11:27,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:11:27,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:11:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:11:31,655 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-07 14:11:31,899 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-07 14:11:32,097 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-07 14:12:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21902 backedges. 13150 proven. 5179 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2019-09-07 14:12:24,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:12:24,741 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 14:12:24,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:12:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:12:26,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 6211 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:12:26,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:12:26,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 14:12:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21902 backedges. 3885 proven. 2 refuted. 0 times theorem prover too weak. 18015 trivial. 0 not checked. [2019-09-07 14:12:33,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:12:33,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5] total 30 [2019-09-07 14:12:33,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-07 14:12:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-07 14:12:33,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2019-09-07 14:12:33,648 INFO L87 Difference]: Start difference. First operand 145439 states and 147040 transitions. Second operand 30 states. [2019-09-07 14:12:34,015 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-07 14:12:34,445 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2019-09-07 14:12:37,130 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 14:12:37,321 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-07 14:12:37,506 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-07 14:12:38,221 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-07 14:12:38,481 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-07 14:12:42,990 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 14:12:44,769 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2019-09-07 14:12:44,996 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-07 14:12:46,361 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2019-09-07 14:12:46,544 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-07 14:12:48,778 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2019-09-07 14:12:50,542 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2019-09-07 14:12:51,746 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 14:12:52,099 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-07 14:12:54,209 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2019-09-07 14:12:54,515 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2019-09-07 14:12:55,332 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-07 14:13:00,054 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2019-09-07 14:13:01,172 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-07 14:13:05,460 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2019-09-07 14:13:08,921 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-07 14:13:09,773 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2019-09-07 14:13:11,651 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-07 14:13:15,939 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 34 [2019-09-07 14:13:17,163 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-07 14:13:17,575 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-07 14:13:18,197 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-07 14:13:25,084 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-07 14:13:27,945 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2019-09-07 14:13:29,042 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-07 14:13:30,165 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2019-09-07 14:13:31,848 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 75 [2019-09-07 14:13:32,167 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-07 14:13:32,355 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-07 14:13:33,898 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-07 14:13:34,368 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-07 14:13:34,661 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-07 14:13:37,192 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2019-09-07 14:13:37,490 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 14:13:37,999 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2019-09-07 14:13:40,739 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-09-07 14:13:41,272 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-07 14:13:44,063 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 14:13:48,213 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-07 14:13:48,906 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2019-09-07 14:13:49,183 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-07 14:13:49,331 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-07 14:13:51,045 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2019-09-07 14:13:51,734 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 14:13:54,153 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2019-09-07 14:13:55,028 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 38 [2019-09-07 14:13:55,689 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-07 14:13:56,910 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-09-07 14:13:57,246 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 14:14:00,760 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2019-09-07 14:14:04,122 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-07 14:14:06,070 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 14:14:08,908 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-09-07 14:14:09,186 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-07 14:14:14,668 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 26 [2019-09-07 14:14:15,507 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-09-07 14:14:15,978 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-07 14:14:16,614 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-07 14:14:17,030 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2019-09-07 14:14:17,501 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-07 14:14:23,973 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 14:14:26,270 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2019-09-07 14:14:26,916 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-07 14:14:27,980 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2019-09-07 14:14:28,374 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-07 14:14:31,147 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-09-07 14:14:31,508 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2019-09-07 14:14:33,971 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2019-09-07 14:14:34,379 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 39 [2019-09-07 14:14:36,417 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2019-09-07 14:14:36,833 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-07 14:14:37,123 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2019-09-07 14:14:38,063 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-07 14:14:39,676 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-09-07 14:14:40,836 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2019-09-07 14:14:41,881 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 57 [2019-09-07 14:14:42,311 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-07 14:14:42,741 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-07 14:14:43,754 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 14:14:44,651 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-07 14:14:45,578 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2019-09-07 14:14:46,819 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2019-09-07 14:14:47,160 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2019-09-07 14:14:47,566 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2019-09-07 14:14:47,775 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2019-09-07 14:14:47,964 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 14:14:48,207 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-07 14:14:48,682 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-07 14:14:49,020 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2019-09-07 14:14:49,445 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2019-09-07 14:14:50,081 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 33 [2019-09-07 14:14:50,380 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2019-09-07 14:14:50,532 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2019-09-07 14:14:51,724 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2019-09-07 14:14:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:14:54,884 INFO L93 Difference]: Finished difference Result 326917 states and 331242 transitions. [2019-09-07 14:14:54,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2019-09-07 14:14:54,884 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 4784 [2019-09-07 14:14:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:14:55,292 INFO L225 Difference]: With dead ends: 326917 [2019-09-07 14:14:55,293 INFO L226 Difference]: Without dead ends: 184828 [2019-09-07 14:14:55,401 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5256 GetRequests, 4997 SyntacticMatches, 2 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27265 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=6032, Invalid=60790, Unknown=0, NotChecked=0, Total=66822 [2019-09-07 14:14:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184828 states. [2019-09-07 14:14:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184828 to 176267. [2019-09-07 14:14:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176267 states. [2019-09-07 14:14:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176267 states to 176267 states and 178071 transitions. [2019-09-07 14:14:57,355 INFO L78 Accepts]: Start accepts. Automaton has 176267 states and 178071 transitions. Word has length 4784 [2019-09-07 14:14:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:14:57,356 INFO L475 AbstractCegarLoop]: Abstraction has 176267 states and 178071 transitions. [2019-09-07 14:14:57,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-09-07 14:14:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 176267 states and 178071 transitions. [2019-09-07 14:14:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5073 [2019-09-07 14:14:57,632 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:14:57,634 INFO L399 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 14:14:57,634 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:14:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:14:57,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1071480594, now seen corresponding path program 1 times [2019-09-07 14:14:57,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:14:57,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:14:57,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:57,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:14:57,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat