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/Problem05_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 14:53:49,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 14:53:49,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 14:53:49,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 14:53:49,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 14:53:49,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 14:53:49,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 14:53:49,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 14:53:49,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 14:53:49,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 14:53:49,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 14:53:49,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 14:53:49,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 14:53:49,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 14:53:49,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 14:53:49,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 14:53:49,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 14:53:49,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 14:53:49,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 14:53:49,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 14:53:49,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 14:53:49,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 14:53:49,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 14:53:49,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 14:53:49,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 14:53:49,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 14:53:49,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 14:53:49,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 14:53:49,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 14:53:49,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 14:53:49,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 14:53:49,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 14:53:49,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 14:53:49,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 14:53:49,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 14:53:49,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 14:53:49,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 14:53:49,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 14:53:49,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 14:53:49,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 14:53:49,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 14:53:49,322 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 14:53:49,345 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 14:53:49,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 14:53:49,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 14:53:49,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 14:53:49,348 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 14:53:49,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 14:53:49,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 14:53:49,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 14:53:49,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 14:53:49,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 14:53:49,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 14:53:49,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 14:53:49,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 14:53:49,351 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 14:53:49,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 14:53:49,351 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 14:53:49,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 14:53:49,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 14:53:49,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 14:53:49,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 14:53:49,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 14:53:49,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:53:49,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 14:53:49,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 14:53:49,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 14:53:49,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 14:53:49,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 14:53:49,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 14:53:49,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 14:53:49,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 14:53:49,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 14:53:49,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 14:53:49,424 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 14:53:49,424 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 14:53:49,425 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2019-09-07 14:53:49,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2bef76a/cc094296d2e34063835194dccf89ce21/FLAG9563957a9 [2019-09-07 14:53:50,517 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 14:53:50,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2019-09-07 14:53:50,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2bef76a/cc094296d2e34063835194dccf89ce21/FLAG9563957a9 [2019-09-07 14:53:50,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2bef76a/cc094296d2e34063835194dccf89ce21 [2019-09-07 14:53:50,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 14:53:50,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 14:53:50,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 14:53:50,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 14:53:50,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 14:53:50,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:53:50" (1/1) ... [2019-09-07 14:53:50,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624e1260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:50, skipping insertion in model container [2019-09-07 14:53:50,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:53:50" (1/1) ... [2019-09-07 14:53:50,886 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 14:53:51,132 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 14:53:53,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:53:53,493 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 14:53:54,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:53:54,864 INFO L192 MainTranslator]: Completed translation [2019-09-07 14:53:54,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54 WrapperNode [2019-09-07 14:53:54,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 14:53:54,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 14:53:54,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 14:53:54,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 14:53:54,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:54,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:54,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:54,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:55,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:55,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:55,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (1/1) ... [2019-09-07 14:53:55,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 14:53:55,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 14:53:55,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 14:53:55,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 14:53:55,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (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 14:53:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 14:53:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 14:53:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 14:53:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 14:53:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 14:53:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 14:53:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 14:53:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 14:53:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2019-09-07 14:53:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2019-09-07 14:53:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 14:53:55,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 14:53:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 14:53:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 14:53:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 14:53:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 14:53:55,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 14:53:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2019-09-07 14:53:55,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2019-09-07 14:53:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 14:53:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 14:53:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 14:53:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 14:53:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 14:53:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 14:54:03,938 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 14:54:03,938 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 14:54:03,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:54:03 BoogieIcfgContainer [2019-09-07 14:54:03,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 14:54:03,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 14:54:03,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 14:54:03,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 14:54:03,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:53:50" (1/3) ... [2019-09-07 14:54:03,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ca332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:54:03, skipping insertion in model container [2019-09-07 14:54:03,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:53:54" (2/3) ... [2019-09-07 14:54:03,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ca332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:54:03, skipping insertion in model container [2019-09-07 14:54:03,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:54:03" (3/3) ... [2019-09-07 14:54:03,997 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label50.c [2019-09-07 14:54:04,004 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 14:54:04,013 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 14:54:04,027 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 14:54:04,080 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 14:54:04,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 14:54:04,081 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 14:54:04,081 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 14:54:04,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 14:54:04,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 14:54:04,082 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 14:54:04,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 14:54:04,082 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 14:54:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2019-09-07 14:54:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2019-09-07 14:54:04,274 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:54:04,277 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:04,279 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:54:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:54:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash 462139361, now seen corresponding path program 1 times [2019-09-07 14:54:04,288 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:54:04,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:54:04,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:04,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:54:04,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:54:08,804 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 14:54:08,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:54:08,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:54:08,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:54:08,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:54:08,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:54:08,834 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 3 states. [2019-09-07 14:54:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:54:18,008 INFO L93 Difference]: Finished difference Result 6245 states and 11783 transitions. [2019-09-07 14:54:18,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:54:18,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1702 [2019-09-07 14:54:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:54:18,078 INFO L225 Difference]: With dead ends: 6245 [2019-09-07 14:54:18,078 INFO L226 Difference]: Without dead ends: 3961 [2019-09-07 14:54:18,099 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 9 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 14:54:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2019-09-07 14:54:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3943. [2019-09-07 14:54:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2019-09-07 14:54:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 7144 transitions. [2019-09-07 14:54:18,406 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 7144 transitions. Word has length 1702 [2019-09-07 14:54:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:54:18,413 INFO L475 AbstractCegarLoop]: Abstraction has 3943 states and 7144 transitions. [2019-09-07 14:54:18,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:54:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 7144 transitions. [2019-09-07 14:54:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2019-09-07 14:54:18,622 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:54:18,624 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:18,624 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:54:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:54:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2055157974, now seen corresponding path program 1 times [2019-09-07 14:54:18,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:54:18,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:54:18,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:18,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:54:18,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:54:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:54:20,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:54:20,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 14:54:20,124 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 14:54:20,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 14:54:20,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 14:54:20,125 INFO L87 Difference]: Start difference. First operand 3943 states and 7144 transitions. Second operand 5 states. [2019-09-07 14:54:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:54:34,087 INFO L93 Difference]: Finished difference Result 11644 states and 21313 transitions. [2019-09-07 14:54:34,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 14:54:34,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1711 [2019-09-07 14:54:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:54:34,152 INFO L225 Difference]: With dead ends: 11644 [2019-09-07 14:54:34,152 INFO L226 Difference]: Without dead ends: 7707 [2019-09-07 14:54:34,166 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 14:54:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7707 states. [2019-09-07 14:54:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7707 to 7561. [2019-09-07 14:54:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7561 states. [2019-09-07 14:54:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7561 states to 7561 states and 13645 transitions. [2019-09-07 14:54:34,391 INFO L78 Accepts]: Start accepts. Automaton has 7561 states and 13645 transitions. Word has length 1711 [2019-09-07 14:54:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:54:34,392 INFO L475 AbstractCegarLoop]: Abstraction has 7561 states and 13645 transitions. [2019-09-07 14:54:34,392 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 14:54:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7561 states and 13645 transitions. [2019-09-07 14:54:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2019-09-07 14:54:34,441 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:54:34,443 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:34,443 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:54:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:54:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1029143937, now seen corresponding path program 1 times [2019-09-07 14:54:34,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:54:34,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:54:34,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:34,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:54:34,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:54:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:54:35,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:54:35,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 14:54:35,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 14:54:35,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 14:54:35,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 14:54:35,923 INFO L87 Difference]: Start difference. First operand 7561 states and 13645 transitions. Second operand 7 states. [2019-09-07 14:54:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:54:52,038 INFO L93 Difference]: Finished difference Result 22622 states and 41814 transitions. [2019-09-07 14:54:52,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 14:54:52,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1712 [2019-09-07 14:54:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:54:52,117 INFO L225 Difference]: With dead ends: 22622 [2019-09-07 14:54:52,118 INFO L226 Difference]: Without dead ends: 15067 [2019-09-07 14:54:52,139 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:54:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15067 states. [2019-09-07 14:54:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15067 to 14932. [2019-09-07 14:54:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14932 states. [2019-09-07 14:54:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14932 states to 14932 states and 24231 transitions. [2019-09-07 14:54:52,530 INFO L78 Accepts]: Start accepts. Automaton has 14932 states and 24231 transitions. Word has length 1712 [2019-09-07 14:54:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:54:52,531 INFO L475 AbstractCegarLoop]: Abstraction has 14932 states and 24231 transitions. [2019-09-07 14:54:52,531 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 14:54:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 14932 states and 24231 transitions. [2019-09-07 14:54:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2019-09-07 14:54:52,602 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:54:52,604 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:52,604 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:54:52,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:54:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash 9566410, now seen corresponding path program 1 times [2019-09-07 14:54:52,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:54:52,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:54:52,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:52,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:54:52,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:54:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:54:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:54:54,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:54:54,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:54:54,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:54:54,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:54:54,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:54:54,824 INFO L87 Difference]: Start difference. First operand 14932 states and 24231 transitions. Second operand 6 states. [2019-09-07 14:55:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:55:11,355 INFO L93 Difference]: Finished difference Result 44986 states and 77315 transitions. [2019-09-07 14:55:11,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 14:55:11,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1720 [2019-09-07 14:55:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:55:11,491 INFO L225 Difference]: With dead ends: 44986 [2019-09-07 14:55:11,491 INFO L226 Difference]: Without dead ends: 30060 [2019-09-07 14:55:11,532 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-07 14:55:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30060 states. [2019-09-07 14:55:12,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30060 to 29696. [2019-09-07 14:55:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29696 states. [2019-09-07 14:55:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29696 states to 29696 states and 49097 transitions. [2019-09-07 14:55:12,333 INFO L78 Accepts]: Start accepts. Automaton has 29696 states and 49097 transitions. Word has length 1720 [2019-09-07 14:55:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:55:12,334 INFO L475 AbstractCegarLoop]: Abstraction has 29696 states and 49097 transitions. [2019-09-07 14:55:12,335 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:55:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 29696 states and 49097 transitions. [2019-09-07 14:55:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2019-09-07 14:55:12,488 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:55:12,491 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:12,491 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:55:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:55:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash 142668529, now seen corresponding path program 1 times [2019-09-07 14:55:12,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:55:12,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:55:12,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:55:12,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:55:12,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:55:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:55:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:55:14,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:55:14,473 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 14:55:14,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:55:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:55:15,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 14:55:15,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:55:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 14:55:16,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:55:16,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 14:55:16,501 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 14:55:16,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 14:55:16,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 14:55:16,502 INFO L87 Difference]: Start difference. First operand 29696 states and 49097 transitions. Second operand 7 states. [2019-09-07 14:55:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:55:44,117 INFO L93 Difference]: Finished difference Result 116604 states and 222415 transitions. [2019-09-07 14:55:44,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 14:55:44,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1730 [2019-09-07 14:55:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:55:44,676 INFO L225 Difference]: With dead ends: 116604 [2019-09-07 14:55:44,676 INFO L226 Difference]: Without dead ends: 86914 [2019-09-07 14:55:44,793 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1752 GetRequests, 1739 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:55:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86914 states. [2019-09-07 14:55:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86914 to 86423. [2019-09-07 14:55:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86423 states. [2019-09-07 14:55:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86423 states to 86423 states and 141897 transitions. [2019-09-07 14:55:47,638 INFO L78 Accepts]: Start accepts. Automaton has 86423 states and 141897 transitions. Word has length 1730 [2019-09-07 14:55:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:55:47,639 INFO L475 AbstractCegarLoop]: Abstraction has 86423 states and 141897 transitions. [2019-09-07 14:55:47,639 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 14:55:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 86423 states and 141897 transitions. [2019-09-07 14:55:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1736 [2019-09-07 14:55:48,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:55:48,249 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:48,249 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:55:48,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:55:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash -363492203, now seen corresponding path program 1 times [2019-09-07 14:55:48,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:55:48,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:55:48,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:55:48,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:55:48,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:55:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:55:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 14:55:51,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:55:51,980 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:55:51,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:55:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:55:52,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 2187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:55:52,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:55:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-07 14:55:53,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:55:53,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-07 14:55:53,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 14:55:53,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 14:55:53,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 14:55:53,548 INFO L87 Difference]: Start difference. First operand 86423 states and 141897 transitions. Second operand 8 states. [2019-09-07 14:56:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:56:16,643 INFO L93 Difference]: Finished difference Result 220337 states and 405695 transitions. [2019-09-07 14:56:16,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 14:56:16,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1735 [2019-09-07 14:56:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:56:17,474 INFO L225 Difference]: With dead ends: 220337 [2019-09-07 14:56:17,474 INFO L226 Difference]: Without dead ends: 133920 [2019-09-07 14:56:17,715 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1763 GetRequests, 1745 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2019-09-07 14:56:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133920 states. [2019-09-07 14:56:20,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133920 to 133036. [2019-09-07 14:56:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133036 states. [2019-09-07 14:56:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133036 states to 133036 states and 229657 transitions. [2019-09-07 14:56:21,543 INFO L78 Accepts]: Start accepts. Automaton has 133036 states and 229657 transitions. Word has length 1735 [2019-09-07 14:56:21,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:56:21,545 INFO L475 AbstractCegarLoop]: Abstraction has 133036 states and 229657 transitions. [2019-09-07 14:56:21,545 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 14:56:21,545 INFO L276 IsEmpty]: Start isEmpty. Operand 133036 states and 229657 transitions. [2019-09-07 14:56:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1746 [2019-09-07 14:56:22,121 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:56:22,123 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:22,123 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:56:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:56:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1190519148, now seen corresponding path program 1 times [2019-09-07 14:56:22,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:56:22,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:56:22,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:56:22,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:56:22,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:56:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:56:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 14:56:28,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:56:28,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 14:56:28,528 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 14:56:28,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 14:56:28,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 14:56:28,529 INFO L87 Difference]: Start difference. First operand 133036 states and 229657 transitions. Second operand 4 states. [2019-09-07 14:56:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:56:47,544 INFO L93 Difference]: Finished difference Result 336937 states and 623405 transitions. [2019-09-07 14:56:47,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 14:56:47,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1745 [2019-09-07 14:56:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:56:48,600 INFO L225 Difference]: With dead ends: 336937 [2019-09-07 14:56:48,600 INFO L226 Difference]: Without dead ends: 203907 [2019-09-07 14:56:48,783 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 14:56:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203907 states. [2019-09-07 14:56:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203907 to 203752. [2019-09-07 14:56:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203752 states. [2019-09-07 14:56:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203752 states to 203752 states and 366994 transitions. [2019-09-07 14:56:53,744 INFO L78 Accepts]: Start accepts. Automaton has 203752 states and 366994 transitions. Word has length 1745 [2019-09-07 14:56:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:56:53,746 INFO L475 AbstractCegarLoop]: Abstraction has 203752 states and 366994 transitions. [2019-09-07 14:56:53,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 14:56:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 203752 states and 366994 transitions. [2019-09-07 14:56:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2019-09-07 14:56:54,355 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:56:54,356 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:54,357 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:56:54,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:56:54,357 INFO L82 PathProgramCache]: Analyzing trace with hash 586841147, now seen corresponding path program 1 times [2019-09-07 14:56:54,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:56:54,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:56:54,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:56:54,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:56:54,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:56:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:57:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 98 proven. 63 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-09-07 14:57:00,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:57:00,201 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 14:57:00,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:57:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:57:00,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:57:00,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:57:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-07 14:57:02,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:57:02,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:57:02,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:57:02,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:57:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:57:02,209 INFO L87 Difference]: Start difference. First operand 203752 states and 366994 transitions. Second operand 11 states. [2019-09-07 14:57:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:57:45,918 INFO L93 Difference]: Finished difference Result 826360 states and 1738582 transitions. [2019-09-07 14:57:45,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 14:57:45,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1804 [2019-09-07 14:57:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:57:59,117 INFO L225 Difference]: With dead ends: 826360 [2019-09-07 14:57:59,117 INFO L226 Difference]: Without dead ends: 622614 [2019-09-07 14:57:59,677 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1832 GetRequests, 1813 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-09-07 14:58:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622614 states. [2019-09-07 14:58:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622614 to 603969. [2019-09-07 14:58:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603969 states. [2019-09-07 14:58:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603969 states to 603969 states and 1040790 transitions. [2019-09-07 14:58:33,792 INFO L78 Accepts]: Start accepts. Automaton has 603969 states and 1040790 transitions. Word has length 1804 [2019-09-07 14:58:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:58:33,793 INFO L475 AbstractCegarLoop]: Abstraction has 603969 states and 1040790 transitions. [2019-09-07 14:58:33,793 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:58:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 603969 states and 1040790 transitions. [2019-09-07 14:58:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1818 [2019-09-07 14:58:45,725 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:58:45,726 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:58:45,726 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:58:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:58:45,727 INFO L82 PathProgramCache]: Analyzing trace with hash -612679264, now seen corresponding path program 1 times [2019-09-07 14:58:45,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:58:45,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:58:45,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:58:45,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:58:45,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:58:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:58:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 14:58:52,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:58:52,650 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 14:58:52,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:58:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:58:53,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:58:53,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:58:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 14:58:55,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:58:55,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:58:55,073 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:58:55,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:58:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:58:55,073 INFO L87 Difference]: Start difference. First operand 603969 states and 1040790 transitions. Second operand 9 states. [2019-09-07 14:59:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:59:41,217 INFO L93 Difference]: Finished difference Result 1590968 states and 3024668 transitions. [2019-09-07 14:59:41,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 14:59:41,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1817 [2019-09-07 14:59:41,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:59:49,489 INFO L225 Difference]: With dead ends: 1590968 [2019-09-07 14:59:49,489 INFO L226 Difference]: Without dead ends: 987009 [2019-09-07 14:59:50,513 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1838 GetRequests, 1823 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2019-09-07 14:59:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987009 states.