/usr/bin/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:46:55,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:46:55,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:46:55,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:46:55,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:46:55,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:46:55,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:46:55,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:46:55,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:46:55,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:46:55,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:46:55,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:46:55,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:46:55,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:46:55,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:46:55,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:46:55,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:46:55,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:46:55,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:46:55,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:46:55,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:46:55,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:46:55,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:46:55,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:46:55,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:46:55,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:46:55,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:46:55,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:46:55,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:46:55,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:46:55,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:46:55,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:46:55,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:46:55,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:46:55,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:46:55,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:46:55,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:46:55,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:46:55,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:46:55,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:46:55,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:46:55,736 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 [2019-11-07 00:46:55,750 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:46:55,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:46:55,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:46:55,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:46:55,752 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:46:55,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:46:55,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:46:55,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:46:55,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:46:55,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:46:55,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:46:55,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:46:55,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:46:55,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:46:55,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:46:55,754 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:46:55,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:46:55,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:46:55,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:46:55,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:46:55,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:46:55,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:46:55,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:46:55,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:46:55,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:46:55,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:46:55,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:46:55,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:46:55,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:46:56,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:46:56,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:46:56,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:46:56,051 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:46:56,051 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:46:56,052 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c [2019-11-07 00:46:56,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2962915/d8eb03725c4249b4a21a267fb18f6e25/FLAGcf8df927b [2019-11-07 00:46:56,817 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:46:56,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product20.cil.c [2019-11-07 00:46:56,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2962915/d8eb03725c4249b4a21a267fb18f6e25/FLAGcf8df927b [2019-11-07 00:46:57,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2962915/d8eb03725c4249b4a21a267fb18f6e25 [2019-11-07 00:46:57,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:46:57,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:46:57,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:57,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:46:57,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:46:57,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:57" (1/1) ... [2019-11-07 00:46:57,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651a291b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:57, skipping insertion in model container [2019-11-07 00:46:57,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:57" (1/1) ... [2019-11-07 00:46:57,027 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:46:57,112 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:46:57,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:57,911 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:46:58,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:58,210 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:46:58,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58 WrapperNode [2019-11-07 00:46:58,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:58,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:46:58,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:46:58,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:46:58,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:46:58,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:46:58,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:46:58,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:46:58,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (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 [2019-11-07 00:46:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:46:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:46:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:46:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:46:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:46:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:46:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:46:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:46:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:46:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:46:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:46:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:46:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:46:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:46:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:46:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:46:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:46:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:46:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:46:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:46:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:46:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:46:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:46:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:46:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:46:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:46:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:46:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:46:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:46:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:46:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:46:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:46:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:46:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:46:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:46:58,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:46:58,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:46:58,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:46:58,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:46:58,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:46:58,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:46:58,534 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:46:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:46:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:46:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:46:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:46:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:46:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:46:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:46:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:46:58,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:46:58,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:46:58,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:46:58,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:46:58,537 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:46:58,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:58,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:58,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:58,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:46:58,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:46:58,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:46:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-11-07 00:46:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:46:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:46:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:46:58,540 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:46:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:46:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:46:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:46:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:46:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:46:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:46:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:46:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:46:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:46:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:46:58,543 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:46:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:46:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:46:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:46:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:46:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:46:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:46:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:46:58,546 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:46:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:46:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:46:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:46:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:46:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:46:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:46:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:46:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:46:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:46:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:46:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:46:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:46:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:46:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:46:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:46:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:46:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:46:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:46:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:46:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:46:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:46:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:46:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:46:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:46:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:46:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:46:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:46:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:46:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:46:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:46:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:46:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:46:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:46:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:46:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:46:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:46:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:46:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:46:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:46:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:46:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:46:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:46:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:46:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:46:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:46:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:46:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:46:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:46:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:46:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:46:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:46:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:46:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:46:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:46:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:46:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:46:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:46:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:46:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:46:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:46:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:46:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:46:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:46:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:46:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:46:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:46:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:46:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:46:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:46:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:46:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:46:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:46:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:46:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:46:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:46:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:46:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:46:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:46:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:46:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:46:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:46:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:46:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:46:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:46:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:46:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:46:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:46:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:46:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:46:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:46:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:46:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:46:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:46:58,589 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:46:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:46:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:46:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:46:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:46:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:46:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:46:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:46:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:46:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:46:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:46:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:46:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:46:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:46:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:46:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:46:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:46:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:46:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:46:58,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:46:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:47:00,764 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:47:00,764 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:47:00,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:00 BoogieIcfgContainer [2019-11-07 00:47:00,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:47:00,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:47:00,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:47:00,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:47:00,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:46:57" (1/3) ... [2019-11-07 00:47:00,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1958b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:00, skipping insertion in model container [2019-11-07 00:47:00,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58" (2/3) ... [2019-11-07 00:47:00,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1958b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:00, skipping insertion in model container [2019-11-07 00:47:00,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:00" (3/3) ... [2019-11-07 00:47:00,777 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2019-11-07 00:47:00,787 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:47:00,797 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:47:00,809 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:47:00,839 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:47:00,839 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:47:00,840 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:47:00,840 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:47:00,840 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:47:00,840 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:47:00,840 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:47:00,840 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:47:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states. [2019-11-07 00:47:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 00:47:00,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:00,897 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:00,899 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:00,906 INFO L82 PathProgramCache]: Analyzing trace with hash 598149460, now seen corresponding path program 1 times [2019-11-07 00:47:00,916 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:00,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003954771] [2019-11-07 00:47:00,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:01,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003954771] [2019-11-07 00:47:01,649 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:01,649 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:47:01,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388642837] [2019-11-07 00:47:01,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:47:01,658 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:01,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:47:01,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:01,675 INFO L87 Difference]: Start difference. First operand 556 states. Second operand 2 states. [2019-11-07 00:47:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:01,779 INFO L93 Difference]: Finished difference Result 772 states and 1053 transitions. [2019-11-07 00:47:01,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:47:01,781 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 193 [2019-11-07 00:47:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:01,820 INFO L225 Difference]: With dead ends: 772 [2019-11-07 00:47:01,820 INFO L226 Difference]: Without dead ends: 514 [2019-11-07 00:47:01,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-11-07 00:47:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2019-11-07 00:47:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2019-11-07 00:47:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 704 transitions. [2019-11-07 00:47:01,929 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 704 transitions. Word has length 193 [2019-11-07 00:47:01,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:01,931 INFO L462 AbstractCegarLoop]: Abstraction has 514 states and 704 transitions. [2019-11-07 00:47:01,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:47:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 704 transitions. [2019-11-07 00:47:01,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 00:47:01,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:01,940 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:01,940 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash -736139474, now seen corresponding path program 1 times [2019-11-07 00:47:01,941 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:01,941 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163321676] [2019-11-07 00:47:01,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:02,183 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163321676] [2019-11-07 00:47:02,184 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:02,184 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:02,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057895062] [2019-11-07 00:47:02,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:02,187 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:02,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:02,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:02,188 INFO L87 Difference]: Start difference. First operand 514 states and 704 transitions. Second operand 3 states. [2019-11-07 00:47:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:02,244 INFO L93 Difference]: Finished difference Result 755 states and 1016 transitions. [2019-11-07 00:47:02,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:02,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-11-07 00:47:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:02,250 INFO L225 Difference]: With dead ends: 755 [2019-11-07 00:47:02,250 INFO L226 Difference]: Without dead ends: 517 [2019-11-07 00:47:02,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2019-11-07 00:47:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2019-11-07 00:47:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2019-11-07 00:47:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 706 transitions. [2019-11-07 00:47:02,294 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 706 transitions. Word has length 194 [2019-11-07 00:47:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:02,298 INFO L462 AbstractCegarLoop]: Abstraction has 516 states and 706 transitions. [2019-11-07 00:47:02,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 706 transitions. [2019-11-07 00:47:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:47:02,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:02,308 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:02,308 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1382957214, now seen corresponding path program 1 times [2019-11-07 00:47:02,309 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:02,309 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082188581] [2019-11-07 00:47:02,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:02,572 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082188581] [2019-11-07 00:47:02,572 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:02,572 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:02,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073554598] [2019-11-07 00:47:02,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:02,579 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:02,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:02,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:02,580 INFO L87 Difference]: Start difference. First operand 516 states and 706 transitions. Second operand 3 states. [2019-11-07 00:47:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:02,653 INFO L93 Difference]: Finished difference Result 1010 states and 1413 transitions. [2019-11-07 00:47:02,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:02,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-11-07 00:47:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:02,661 INFO L225 Difference]: With dead ends: 1010 [2019-11-07 00:47:02,661 INFO L226 Difference]: Without dead ends: 559 [2019-11-07 00:47:02,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2019-11-07 00:47:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 558. [2019-11-07 00:47:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-11-07 00:47:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 778 transitions. [2019-11-07 00:47:02,720 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 778 transitions. Word has length 204 [2019-11-07 00:47:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:02,721 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 778 transitions. [2019-11-07 00:47:02,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 778 transitions. [2019-11-07 00:47:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:47:02,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:02,734 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:02,735 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1870197346, now seen corresponding path program 1 times [2019-11-07 00:47:02,736 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:02,736 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876379960] [2019-11-07 00:47:02,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:03,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876379960] [2019-11-07 00:47:03,101 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:03,101 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:03,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034432903] [2019-11-07 00:47:03,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:03,103 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:03,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:03,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,105 INFO L87 Difference]: Start difference. First operand 558 states and 778 transitions. Second operand 3 states. [2019-11-07 00:47:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:03,149 INFO L93 Difference]: Finished difference Result 1133 states and 1624 transitions. [2019-11-07 00:47:03,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:03,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-11-07 00:47:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:03,158 INFO L225 Difference]: With dead ends: 1133 [2019-11-07 00:47:03,159 INFO L226 Difference]: Without dead ends: 640 [2019-11-07 00:47:03,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2019-11-07 00:47:03,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 639. [2019-11-07 00:47:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-11-07 00:47:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 916 transitions. [2019-11-07 00:47:03,194 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 916 transitions. Word has length 205 [2019-11-07 00:47:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:03,195 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 916 transitions. [2019-11-07 00:47:03,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 916 transitions. [2019-11-07 00:47:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 00:47:03,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:03,200 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:03,200 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:03,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1813440642, now seen corresponding path program 1 times [2019-11-07 00:47:03,201 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:03,201 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412454128] [2019-11-07 00:47:03,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:03,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412454128] [2019-11-07 00:47:03,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:03,375 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:03,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056411477] [2019-11-07 00:47:03,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:03,376 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:03,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:03,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,378 INFO L87 Difference]: Start difference. First operand 639 states and 916 transitions. Second operand 3 states. [2019-11-07 00:47:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:03,426 INFO L93 Difference]: Finished difference Result 1370 states and 2028 transitions. [2019-11-07 00:47:03,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:03,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-11-07 00:47:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:03,436 INFO L225 Difference]: With dead ends: 1370 [2019-11-07 00:47:03,436 INFO L226 Difference]: Without dead ends: 796 [2019-11-07 00:47:03,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2019-11-07 00:47:03,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 795. [2019-11-07 00:47:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-11-07 00:47:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1180 transitions. [2019-11-07 00:47:03,492 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1180 transitions. Word has length 206 [2019-11-07 00:47:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:03,492 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 1180 transitions. [2019-11-07 00:47:03,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1180 transitions. [2019-11-07 00:47:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-07 00:47:03,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:03,499 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:03,499 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:03,500 INFO L82 PathProgramCache]: Analyzing trace with hash -786715774, now seen corresponding path program 1 times [2019-11-07 00:47:03,500 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:03,500 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158482326] [2019-11-07 00:47:03,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:03,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158482326] [2019-11-07 00:47:03,810 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:03,810 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:03,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143943929] [2019-11-07 00:47:03,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:03,811 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:03,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:03,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,812 INFO L87 Difference]: Start difference. First operand 795 states and 1180 transitions. Second operand 3 states. [2019-11-07 00:47:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:03,869 INFO L93 Difference]: Finished difference Result 1826 states and 2800 transitions. [2019-11-07 00:47:03,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:03,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-11-07 00:47:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:03,883 INFO L225 Difference]: With dead ends: 1826 [2019-11-07 00:47:03,883 INFO L226 Difference]: Without dead ends: 1096 [2019-11-07 00:47:03,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2019-11-07 00:47:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1095. [2019-11-07 00:47:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2019-11-07 00:47:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1684 transitions. [2019-11-07 00:47:03,934 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1684 transitions. Word has length 207 [2019-11-07 00:47:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:03,936 INFO L462 AbstractCegarLoop]: Abstraction has 1095 states and 1684 transitions. [2019-11-07 00:47:03,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1684 transitions. [2019-11-07 00:47:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-11-07 00:47:03,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:03,944 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:03,944 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash -709603746, now seen corresponding path program 1 times [2019-11-07 00:47:03,945 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:03,945 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137176066] [2019-11-07 00:47:03,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:04,134 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137176066] [2019-11-07 00:47:04,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:04,135 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:04,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191846907] [2019-11-07 00:47:04,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:04,136 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:04,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:04,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:04,137 INFO L87 Difference]: Start difference. First operand 1095 states and 1684 transitions. Second operand 3 states. [2019-11-07 00:47:04,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:04,215 INFO L93 Difference]: Finished difference Result 2702 states and 4272 transitions. [2019-11-07 00:47:04,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:04,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-11-07 00:47:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:04,227 INFO L225 Difference]: With dead ends: 2702 [2019-11-07 00:47:04,227 INFO L226 Difference]: Without dead ends: 1672 [2019-11-07 00:47:04,235 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2019-11-07 00:47:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1671. [2019-11-07 00:47:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2019-11-07 00:47:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2644 transitions. [2019-11-07 00:47:04,397 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2644 transitions. Word has length 208 [2019-11-07 00:47:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:04,398 INFO L462 AbstractCegarLoop]: Abstraction has 1671 states and 2644 transitions. [2019-11-07 00:47:04,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2644 transitions. [2019-11-07 00:47:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-11-07 00:47:04,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:04,413 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:04,413 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash 324914454, now seen corresponding path program 1 times [2019-11-07 00:47:04,415 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:04,415 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792690900] [2019-11-07 00:47:04,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:04,886 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792690900] [2019-11-07 00:47:04,886 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:04,886 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:47:04,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555710964] [2019-11-07 00:47:04,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:47:04,887 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:04,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:47:04,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:47:04,889 INFO L87 Difference]: Start difference. First operand 1671 states and 2644 transitions. Second operand 19 states. [2019-11-07 00:47:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:09,517 INFO L93 Difference]: Finished difference Result 4050 states and 6402 transitions. [2019-11-07 00:47:09,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-07 00:47:09,518 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 210 [2019-11-07 00:47:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:09,550 INFO L225 Difference]: With dead ends: 4050 [2019-11-07 00:47:09,551 INFO L226 Difference]: Without dead ends: 3825 [2019-11-07 00:47:09,556 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 00:47:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2019-11-07 00:47:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3788. [2019-11-07 00:47:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3788 states. [2019-11-07 00:47:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 6041 transitions. [2019-11-07 00:47:09,786 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 6041 transitions. Word has length 210 [2019-11-07 00:47:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:09,787 INFO L462 AbstractCegarLoop]: Abstraction has 3788 states and 6041 transitions. [2019-11-07 00:47:09,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:47:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 6041 transitions. [2019-11-07 00:47:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:47:09,808 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:09,808 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:09,809 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:09,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1251493429, now seen corresponding path program 1 times [2019-11-07 00:47:09,809 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:09,809 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900236307] [2019-11-07 00:47:09,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:47:10,134 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900236307] [2019-11-07 00:47:10,134 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:10,134 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 00:47:10,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568161750] [2019-11-07 00:47:10,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:47:10,136 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:10,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:47:10,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:47:10,136 INFO L87 Difference]: Start difference. First operand 3788 states and 6041 transitions. Second operand 16 states. [2019-11-07 00:47:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:10,629 INFO L93 Difference]: Finished difference Result 4917 states and 7640 transitions. [2019-11-07 00:47:10,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:47:10,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 211 [2019-11-07 00:47:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:10,665 INFO L225 Difference]: With dead ends: 4917 [2019-11-07 00:47:10,665 INFO L226 Difference]: Without dead ends: 3958 [2019-11-07 00:47:10,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:47:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2019-11-07 00:47:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3958. [2019-11-07 00:47:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3958 states. [2019-11-07 00:47:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 6293 transitions. [2019-11-07 00:47:10,952 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 6293 transitions. Word has length 211 [2019-11-07 00:47:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:10,953 INFO L462 AbstractCegarLoop]: Abstraction has 3958 states and 6293 transitions. [2019-11-07 00:47:10,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:47:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 6293 transitions. [2019-11-07 00:47:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:47:10,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:10,986 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:10,986 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:10,987 INFO L82 PathProgramCache]: Analyzing trace with hash 39326315, now seen corresponding path program 1 times [2019-11-07 00:47:10,987 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:10,987 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931096821] [2019-11-07 00:47:10,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:11,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931096821] [2019-11-07 00:47:11,442 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:11,442 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:47:11,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807975205] [2019-11-07 00:47:11,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:47:11,445 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:11,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:47:11,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:47:11,445 INFO L87 Difference]: Start difference. First operand 3958 states and 6293 transitions. Second operand 15 states. [2019-11-07 00:47:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:15,054 INFO L93 Difference]: Finished difference Result 5127 states and 7943 transitions. [2019-11-07 00:47:15,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-07 00:47:15,054 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 211 [2019-11-07 00:47:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:15,091 INFO L225 Difference]: With dead ends: 5127 [2019-11-07 00:47:15,091 INFO L226 Difference]: Without dead ends: 4058 [2019-11-07 00:47:15,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 00:47:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2019-11-07 00:47:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 4028. [2019-11-07 00:47:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4028 states. [2019-11-07 00:47:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 6404 transitions. [2019-11-07 00:47:15,303 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 6404 transitions. Word has length 211 [2019-11-07 00:47:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:15,304 INFO L462 AbstractCegarLoop]: Abstraction has 4028 states and 6404 transitions. [2019-11-07 00:47:15,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:47:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 6404 transitions. [2019-11-07 00:47:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:47:15,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:15,328 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:15,329 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash -671262686, now seen corresponding path program 1 times [2019-11-07 00:47:15,330 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:15,330 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564007371] [2019-11-07 00:47:15,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:15,530 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564007371] [2019-11-07 00:47:15,530 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:15,530 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:47:15,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148641776] [2019-11-07 00:47:15,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:47:15,531 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:47:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:15,532 INFO L87 Difference]: Start difference. First operand 4028 states and 6404 transitions. Second operand 5 states. [2019-11-07 00:47:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:16,577 INFO L93 Difference]: Finished difference Result 7749 states and 12158 transitions. [2019-11-07 00:47:16,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:47:16,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2019-11-07 00:47:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:16,649 INFO L225 Difference]: With dead ends: 7749 [2019-11-07 00:47:16,649 INFO L226 Difference]: Without dead ends: 7174 [2019-11-07 00:47:16,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:47:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2019-11-07 00:47:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 7156. [2019-11-07 00:47:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7156 states. [2019-11-07 00:47:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 11339 transitions. [2019-11-07 00:47:17,063 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 11339 transitions. Word has length 211 [2019-11-07 00:47:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:17,064 INFO L462 AbstractCegarLoop]: Abstraction has 7156 states and 11339 transitions. [2019-11-07 00:47:17,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:47:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 11339 transitions. [2019-11-07 00:47:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:47:17,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:17,096 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:17,096 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:17,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1154938013, now seen corresponding path program 1 times [2019-11-07 00:47:17,097 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:17,097 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595539092] [2019-11-07 00:47:17,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:17,318 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595539092] [2019-11-07 00:47:17,318 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:17,318 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:47:17,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862539758] [2019-11-07 00:47:17,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:47:17,319 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:17,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:47:17,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:47:17,320 INFO L87 Difference]: Start difference. First operand 7156 states and 11339 transitions. Second operand 7 states. [2019-11-07 00:47:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:19,299 INFO L93 Difference]: Finished difference Result 15881 states and 25146 transitions. [2019-11-07 00:47:19,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:47:19,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2019-11-07 00:47:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:19,364 INFO L225 Difference]: With dead ends: 15881 [2019-11-07 00:47:19,364 INFO L226 Difference]: Without dead ends: 13026 [2019-11-07 00:47:19,385 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:47:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13026 states. [2019-11-07 00:47:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13026 to 13020. [2019-11-07 00:47:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13020 states. [2019-11-07 00:47:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 20697 transitions. [2019-11-07 00:47:19,966 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 20697 transitions. Word has length 211 [2019-11-07 00:47:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:19,967 INFO L462 AbstractCegarLoop]: Abstraction has 13020 states and 20697 transitions. [2019-11-07 00:47:19,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:47:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 20697 transitions. [2019-11-07 00:47:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:47:20,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:20,005 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:20,006 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:20,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1728661351, now seen corresponding path program 1 times [2019-11-07 00:47:20,006 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:20,007 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847495814] [2019-11-07 00:47:20,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:20,535 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847495814] [2019-11-07 00:47:20,535 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:20,535 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:47:20,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50535717] [2019-11-07 00:47:20,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:47:20,536 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:20,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:47:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:47:20,538 INFO L87 Difference]: Start difference. First operand 13020 states and 20697 transitions. Second operand 26 states. [2019-11-07 00:47:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:21,726 INFO L93 Difference]: Finished difference Result 22920 states and 36507 transitions. [2019-11-07 00:47:21,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:47:21,726 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 212 [2019-11-07 00:47:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:21,802 INFO L225 Difference]: With dead ends: 22920 [2019-11-07 00:47:21,802 INFO L226 Difference]: Without dead ends: 14201 [2019-11-07 00:47:21,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:47:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14201 states. [2019-11-07 00:47:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14201 to 14180. [2019-11-07 00:47:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14180 states. [2019-11-07 00:47:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14180 states to 14180 states and 22394 transitions. [2019-11-07 00:47:23,374 INFO L78 Accepts]: Start accepts. Automaton has 14180 states and 22394 transitions. Word has length 212 [2019-11-07 00:47:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:23,375 INFO L462 AbstractCegarLoop]: Abstraction has 14180 states and 22394 transitions. [2019-11-07 00:47:23,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:47:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14180 states and 22394 transitions. [2019-11-07 00:47:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-07 00:47:23,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:23,405 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:23,405 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:23,406 INFO L82 PathProgramCache]: Analyzing trace with hash -925986545, now seen corresponding path program 1 times [2019-11-07 00:47:23,406 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:23,406 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164050405] [2019-11-07 00:47:23,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:23,665 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164050405] [2019-11-07 00:47:23,665 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:23,666 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:47:23,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103937261] [2019-11-07 00:47:23,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:47:23,667 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:23,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:47:23,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:47:23,668 INFO L87 Difference]: Start difference. First operand 14180 states and 22394 transitions. Second operand 10 states. [2019-11-07 00:47:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:23,965 INFO L93 Difference]: Finished difference Result 14303 states and 22546 transitions. [2019-11-07 00:47:23,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:47:23,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 216 [2019-11-07 00:47:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:24,027 INFO L225 Difference]: With dead ends: 14303 [2019-11-07 00:47:24,027 INFO L226 Difference]: Without dead ends: 14300 [2019-11-07 00:47:24,038 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:47:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14300 states. [2019-11-07 00:47:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14300 to 14300. [2019-11-07 00:47:24,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14300 states. [2019-11-07 00:47:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14300 states to 14300 states and 22504 transitions. [2019-11-07 00:47:24,605 INFO L78 Accepts]: Start accepts. Automaton has 14300 states and 22504 transitions. Word has length 216 [2019-11-07 00:47:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:24,606 INFO L462 AbstractCegarLoop]: Abstraction has 14300 states and 22504 transitions. [2019-11-07 00:47:24,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:47:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 14300 states and 22504 transitions. [2019-11-07 00:47:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:47:24,621 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:24,621 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:24,622 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash -17024576, now seen corresponding path program 1 times [2019-11-07 00:47:24,622 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:24,622 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702282883] [2019-11-07 00:47:24,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:24,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702282883] [2019-11-07 00:47:24,970 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:24,970 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:47:24,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133675951] [2019-11-07 00:47:24,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:47:24,971 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:47:24,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:24,972 INFO L87 Difference]: Start difference. First operand 14300 states and 22504 transitions. Second operand 5 states. [2019-11-07 00:47:25,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:25,306 INFO L93 Difference]: Finished difference Result 24362 states and 38491 transitions. [2019-11-07 00:47:25,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:47:25,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2019-11-07 00:47:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:25,381 INFO L225 Difference]: With dead ends: 24362 [2019-11-07 00:47:25,381 INFO L226 Difference]: Without dead ends: 14741 [2019-11-07 00:47:25,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14741 states. [2019-11-07 00:47:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14741 to 14510. [2019-11-07 00:47:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14510 states. [2019-11-07 00:47:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14510 states to 14510 states and 22750 transitions. [2019-11-07 00:47:26,084 INFO L78 Accepts]: Start accepts. Automaton has 14510 states and 22750 transitions. Word has length 221 [2019-11-07 00:47:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:26,085 INFO L462 AbstractCegarLoop]: Abstraction has 14510 states and 22750 transitions. [2019-11-07 00:47:26,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:47:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14510 states and 22750 transitions. [2019-11-07 00:47:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:47:26,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:26,106 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:26,106 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:26,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2066975880, now seen corresponding path program 1 times [2019-11-07 00:47:26,106 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:26,107 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428135253] [2019-11-07 00:47:26,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:26,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428135253] [2019-11-07 00:47:26,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:26,509 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:47:26,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142586856] [2019-11-07 00:47:26,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:47:26,510 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:26,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:47:26,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:47:26,510 INFO L87 Difference]: Start difference. First operand 14510 states and 22750 transitions. Second operand 11 states. [2019-11-07 00:47:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:27,142 INFO L93 Difference]: Finished difference Result 24407 states and 37619 transitions. [2019-11-07 00:47:27,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:47:27,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 221 [2019-11-07 00:47:27,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:27,197 INFO L225 Difference]: With dead ends: 24407 [2019-11-07 00:47:27,197 INFO L226 Difference]: Without dead ends: 14576 [2019-11-07 00:47:27,229 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:47:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14576 states. [2019-11-07 00:47:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14576 to 14558. [2019-11-07 00:47:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14558 states. [2019-11-07 00:47:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14558 states to 14558 states and 22770 transitions. [2019-11-07 00:47:27,798 INFO L78 Accepts]: Start accepts. Automaton has 14558 states and 22770 transitions. Word has length 221 [2019-11-07 00:47:27,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:27,798 INFO L462 AbstractCegarLoop]: Abstraction has 14558 states and 22770 transitions. [2019-11-07 00:47:27,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:47:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 14558 states and 22770 transitions. [2019-11-07 00:47:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-07 00:47:27,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:27,812 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:47:27,813 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:27,813 INFO L82 PathProgramCache]: Analyzing trace with hash -627713257, now seen corresponding path program 1 times [2019-11-07 00:47:27,813 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:27,813 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763418569] [2019-11-07 00:47:27,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat