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_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:25,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:25,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:25,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:25,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:25,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:25,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:25,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:25,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:25,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:25,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:25,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:25,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:25,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:25,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:25,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:25,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:25,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:25,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:25,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:25,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:25,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:25,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:25,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:25,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:25,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:25,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:25,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:25,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:25,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:25,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:25,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:25,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:25,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:25,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:25,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:25,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:25,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:25,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:25,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:25,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:25,757 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 [2019-10-15 01:14:25,772 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:25,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:25,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:25,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:25,774 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:25,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:25,774 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:25,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:25,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:25,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:25,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:25,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:25,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:25,775 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:25,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:25,776 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:25,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:25,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:25,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:25,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:25,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:25,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:25,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:25,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:25,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:25,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:25,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:25,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:25,779 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 [2019-10-15 01:14:26,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:26,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:26,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:26,085 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:26,086 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:26,086 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-10-15 01:14:26,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b0506ea/08ab8fd712e945439f29dfe53f5926dc/FLAG43e4674e8 [2019-10-15 01:14:26,761 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:26,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-10-15 01:14:26,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b0506ea/08ab8fd712e945439f29dfe53f5926dc/FLAG43e4674e8 [2019-10-15 01:14:26,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b0506ea/08ab8fd712e945439f29dfe53f5926dc [2019-10-15 01:14:26,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:26,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:26,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:26,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:26,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:26,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:26" (1/1) ... [2019-10-15 01:14:26,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5cac2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:26, skipping insertion in model container [2019-10-15 01:14:26,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:26" (1/1) ... [2019-10-15 01:14:26,982 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:27,070 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:27,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:27,915 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:28,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:28,110 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:28,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28 WrapperNode [2019-10-15 01:14:28,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:28,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:28,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:28,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:28,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:28,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:28,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:28,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:28,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (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 [2019-10-15 01:14:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:28,393 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:28,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:28,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:28,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:28,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:28,396 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:28,396 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:28,396 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:28,396 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:28,396 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:28,397 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:28,397 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:28,397 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:28,397 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:28,398 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:14:28,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:28,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:28,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:28,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:28,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:28,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:28,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:28,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:28,400 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:28,400 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:28,400 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:28,400 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:14:28,401 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:28,401 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:28,401 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:28,401 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:28,401 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:28,402 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:28,402 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:28,402 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:28,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:28,402 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:28,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:28,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:28,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:28,409 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:28,410 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:28,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:28,412 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:28,413 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:28,414 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:14:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:30,714 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:30,714 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:30,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:30 BoogieIcfgContainer [2019-10-15 01:14:30,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:30,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:30,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:30,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:30,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:26" (1/3) ... [2019-10-15 01:14:30,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577bf762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:30, skipping insertion in model container [2019-10-15 01:14:30,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (2/3) ... [2019-10-15 01:14:30,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577bf762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:30, skipping insertion in model container [2019-10-15 01:14:30,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:30" (3/3) ... [2019-10-15 01:14:30,723 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2019-10-15 01:14:30,733 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:30,744 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:30,756 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:30,789 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:30,789 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:30,789 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:30,790 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:30,790 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:30,790 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:30,790 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:30,790 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states. [2019-10-15 01:14:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:14:30,871 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:30,872 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:30,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:30,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1409604361, now seen corresponding path program 1 times [2019-10-15 01:14:30,892 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:30,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148703719] [2019-10-15 01:14:30,900 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:30,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:30,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:31,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148703719] [2019-10-15 01:14:31,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:31,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:31,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686516655] [2019-10-15 01:14:31,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:31,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:31,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:31,623 INFO L87 Difference]: Start difference. First operand 494 states. Second operand 2 states. [2019-10-15 01:14:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:31,733 INFO L93 Difference]: Finished difference Result 686 states and 905 transitions. [2019-10-15 01:14:31,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:31,735 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-10-15 01:14:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:31,769 INFO L225 Difference]: With dead ends: 686 [2019-10-15 01:14:31,769 INFO L226 Difference]: Without dead ends: 449 [2019-10-15 01:14:31,780 INFO L600 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 [2019-10-15 01:14:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-10-15 01:14:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2019-10-15 01:14:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-15 01:14:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 595 transitions. [2019-10-15 01:14:31,879 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 595 transitions. Word has length 170 [2019-10-15 01:14:31,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:31,882 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 595 transitions. [2019-10-15 01:14:31,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 595 transitions. [2019-10-15 01:14:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:14:31,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:31,888 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:31,888 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:31,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:31,889 INFO L82 PathProgramCache]: Analyzing trace with hash 295988568, now seen corresponding path program 1 times [2019-10-15 01:14:31,889 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:31,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497580681] [2019-10-15 01:14:31,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:31,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:31,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:32,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497580681] [2019-10-15 01:14:32,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:32,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:32,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240502058] [2019-10-15 01:14:32,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:32,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:32,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:32,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:32,173 INFO L87 Difference]: Start difference. First operand 449 states and 595 transitions. Second operand 3 states. [2019-10-15 01:14:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,242 INFO L93 Difference]: Finished difference Result 669 states and 870 transitions. [2019-10-15 01:14:32,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:32,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:14:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,249 INFO L225 Difference]: With dead ends: 669 [2019-10-15 01:14:32,249 INFO L226 Difference]: Without dead ends: 452 [2019-10-15 01:14:32,252 INFO L600 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 [2019-10-15 01:14:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-15 01:14:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2019-10-15 01:14:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-10-15 01:14:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 597 transitions. [2019-10-15 01:14:32,315 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 597 transitions. Word has length 171 [2019-10-15 01:14:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,316 INFO L462 AbstractCegarLoop]: Abstraction has 451 states and 597 transitions. [2019-10-15 01:14:32,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 597 transitions. [2019-10-15 01:14:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:14:32,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,327 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:32,328 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1559518136, now seen corresponding path program 1 times [2019-10-15 01:14:32,328 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941572055] [2019-10-15 01:14:32,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:32,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941572055] [2019-10-15 01:14:32,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:32,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:32,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139947956] [2019-10-15 01:14:32,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:32,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:32,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:32,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:32,542 INFO L87 Difference]: Start difference. First operand 451 states and 597 transitions. Second operand 3 states. [2019-10-15 01:14:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,587 INFO L93 Difference]: Finished difference Result 878 states and 1192 transitions. [2019-10-15 01:14:32,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:32,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-15 01:14:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,593 INFO L225 Difference]: With dead ends: 878 [2019-10-15 01:14:32,593 INFO L226 Difference]: Without dead ends: 492 [2019-10-15 01:14:32,595 INFO L600 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 [2019-10-15 01:14:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-15 01:14:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-15 01:14:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-15 01:14:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 666 transitions. [2019-10-15 01:14:32,618 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 666 transitions. Word has length 181 [2019-10-15 01:14:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,618 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 666 transitions. [2019-10-15 01:14:32,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 666 transitions. [2019-10-15 01:14:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:14:32,623 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,623 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:32,623 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1957887877, now seen corresponding path program 1 times [2019-10-15 01:14:32,624 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190855065] [2019-10-15 01:14:32,624 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:32,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190855065] [2019-10-15 01:14:32,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:32,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:32,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046954006] [2019-10-15 01:14:32,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:32,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:32,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:32,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:32,794 INFO L87 Difference]: Start difference. First operand 491 states and 666 transitions. Second operand 3 states. [2019-10-15 01:14:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,834 INFO L93 Difference]: Finished difference Result 995 states and 1394 transitions. [2019-10-15 01:14:32,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:32,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-10-15 01:14:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,840 INFO L225 Difference]: With dead ends: 995 [2019-10-15 01:14:32,840 INFO L226 Difference]: Without dead ends: 569 [2019-10-15 01:14:32,842 INFO L600 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 [2019-10-15 01:14:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-15 01:14:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 568. [2019-10-15 01:14:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-15 01:14:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 798 transitions. [2019-10-15 01:14:32,872 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 798 transitions. Word has length 182 [2019-10-15 01:14:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,873 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 798 transitions. [2019-10-15 01:14:32,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 798 transitions. [2019-10-15 01:14:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:14:32,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,878 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:32,879 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,879 INFO L82 PathProgramCache]: Analyzing trace with hash 529348680, now seen corresponding path program 1 times [2019-10-15 01:14:32,880 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203768693] [2019-10-15 01:14:32,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,880 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:33,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203768693] [2019-10-15 01:14:33,181 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:33,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:33,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430452094] [2019-10-15 01:14:33,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:33,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:33,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:33,183 INFO L87 Difference]: Start difference. First operand 568 states and 798 transitions. Second operand 3 states. [2019-10-15 01:14:33,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:33,231 INFO L93 Difference]: Finished difference Result 1220 states and 1780 transitions. [2019-10-15 01:14:33,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:33,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-10-15 01:14:33,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:33,242 INFO L225 Difference]: With dead ends: 1220 [2019-10-15 01:14:33,242 INFO L226 Difference]: Without dead ends: 717 [2019-10-15 01:14:33,244 INFO L600 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 [2019-10-15 01:14:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-15 01:14:33,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 716. [2019-10-15 01:14:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2019-10-15 01:14:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1050 transitions. [2019-10-15 01:14:33,306 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1050 transitions. Word has length 183 [2019-10-15 01:14:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:33,307 INFO L462 AbstractCegarLoop]: Abstraction has 716 states and 1050 transitions. [2019-10-15 01:14:33,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1050 transitions. [2019-10-15 01:14:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:14:33,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:33,315 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:33,315 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:33,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1690978181, now seen corresponding path program 1 times [2019-10-15 01:14:33,316 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:33,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866705283] [2019-10-15 01:14:33,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:33,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866705283] [2019-10-15 01:14:33,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:33,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:33,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090686851] [2019-10-15 01:14:33,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:33,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:33,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:33,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:33,535 INFO L87 Difference]: Start difference. First operand 716 states and 1050 transitions. Second operand 3 states. [2019-10-15 01:14:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:33,592 INFO L93 Difference]: Finished difference Result 1652 states and 2516 transitions. [2019-10-15 01:14:33,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:33,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-15 01:14:33,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:33,601 INFO L225 Difference]: With dead ends: 1652 [2019-10-15 01:14:33,601 INFO L226 Difference]: Without dead ends: 1001 [2019-10-15 01:14:33,604 INFO L600 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 [2019-10-15 01:14:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-15 01:14:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1000. [2019-10-15 01:14:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2019-10-15 01:14:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1530 transitions. [2019-10-15 01:14:33,657 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1530 transitions. Word has length 184 [2019-10-15 01:14:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:33,659 INFO L462 AbstractCegarLoop]: Abstraction has 1000 states and 1530 transitions. [2019-10-15 01:14:33,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1530 transitions. [2019-10-15 01:14:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:14:33,665 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:33,665 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:33,666 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:33,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:33,666 INFO L82 PathProgramCache]: Analyzing trace with hash -897317591, now seen corresponding path program 1 times [2019-10-15 01:14:33,666 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:33,667 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359266563] [2019-10-15 01:14:33,667 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,667 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:34,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359266563] [2019-10-15 01:14:34,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:34,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:14:34,036 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214297731] [2019-10-15 01:14:34,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:34,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:34,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:34,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:14:34,037 INFO L87 Difference]: Start difference. First operand 1000 states and 1530 transitions. Second operand 12 states. [2019-10-15 01:14:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:43,407 INFO L93 Difference]: Finished difference Result 2626 states and 3638 transitions. [2019-10-15 01:14:43,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-15 01:14:43,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 187 [2019-10-15 01:14:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:43,423 INFO L225 Difference]: With dead ends: 2626 [2019-10-15 01:14:43,423 INFO L226 Difference]: Without dead ends: 2205 [2019-10-15 01:14:43,430 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2019-10-15 01:14:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2019-10-15 01:14:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2186. [2019-10-15 01:14:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2186 states. [2019-10-15 01:14:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 3040 transitions. [2019-10-15 01:14:43,575 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 3040 transitions. Word has length 187 [2019-10-15 01:14:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:43,577 INFO L462 AbstractCegarLoop]: Abstraction has 2186 states and 3040 transitions. [2019-10-15 01:14:43,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 3040 transitions. [2019-10-15 01:14:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:14:43,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:43,584 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:43,585 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:43,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1638781378, now seen corresponding path program 1 times [2019-10-15 01:14:43,585 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:43,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391339188] [2019-10-15 01:14:43,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:43,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:43,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:43,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391339188] [2019-10-15 01:14:43,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:43,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:14:43,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722928518] [2019-10-15 01:14:43,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:43,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:43,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:43,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:43,884 INFO L87 Difference]: Start difference. First operand 2186 states and 3040 transitions. Second operand 16 states. [2019-10-15 01:14:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:44,230 INFO L93 Difference]: Finished difference Result 3248 states and 4400 transitions. [2019-10-15 01:14:44,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:44,230 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-10-15 01:14:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:44,242 INFO L225 Difference]: With dead ends: 3248 [2019-10-15 01:14:44,242 INFO L226 Difference]: Without dead ends: 1679 [2019-10-15 01:14:44,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:14:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2019-10-15 01:14:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1561. [2019-10-15 01:14:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2019-10-15 01:14:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2240 transitions. [2019-10-15 01:14:44,333 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2240 transitions. Word has length 188 [2019-10-15 01:14:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:44,334 INFO L462 AbstractCegarLoop]: Abstraction has 1561 states and 2240 transitions. [2019-10-15 01:14:44,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2240 transitions. [2019-10-15 01:14:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-15 01:14:44,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:44,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:44,342 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1262940159, now seen corresponding path program 1 times [2019-10-15 01:14:44,343 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:44,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471117390] [2019-10-15 01:14:44,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:14:46,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471117390] [2019-10-15 01:14:46,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190611327] [2019-10-15 01:14:46,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:47,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:47,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:14:47,629 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:48,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:48,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:48,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:48,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:48,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [55, 9] total 67 [2019-10-15 01:14:48,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420126052] [2019-10-15 01:14:48,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:48,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:48,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4248, Unknown=0, NotChecked=0, Total=4422 [2019-10-15 01:14:48,582 INFO L87 Difference]: Start difference. First operand 1561 states and 2240 transitions. Second operand 9 states. [2019-10-15 01:14:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:50,899 INFO L93 Difference]: Finished difference Result 3100 states and 4460 transitions. [2019-10-15 01:14:50,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:50,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-10-15 01:14:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:50,919 INFO L225 Difference]: With dead ends: 3100 [2019-10-15 01:14:50,919 INFO L226 Difference]: Without dead ends: 1575 [2019-10-15 01:14:50,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 382 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=201, Invalid=4629, Unknown=0, NotChecked=0, Total=4830 [2019-10-15 01:14:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2019-10-15 01:14:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2019-10-15 01:14:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2019-10-15 01:14:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2258 transitions. [2019-10-15 01:14:51,023 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2258 transitions. Word has length 197 [2019-10-15 01:14:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:51,023 INFO L462 AbstractCegarLoop]: Abstraction has 1575 states and 2258 transitions. [2019-10-15 01:14:51,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2258 transitions. [2019-10-15 01:14:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-15 01:14:51,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:51,032 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:51,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:51,241 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1259135260, now seen corresponding path program 1 times [2019-10-15 01:14:51,242 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:51,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327123995] [2019-10-15 01:14:51,243 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:51,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:51,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:14:53,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327123995] [2019-10-15 01:14:53,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268770333] [2019-10-15 01:14:53,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:54,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:54,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:14:54,336 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:54,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:54,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:54,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:54,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [53, 7] total 61 [2019-10-15 01:14:54,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7295162] [2019-10-15 01:14:54,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:54,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:54,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:54,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3511, Unknown=0, NotChecked=0, Total=3660 [2019-10-15 01:14:54,931 INFO L87 Difference]: Start difference. First operand 1575 states and 2258 transitions. Second operand 7 states. [2019-10-15 01:14:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:55,791 INFO L93 Difference]: Finished difference Result 3101 states and 4470 transitions. [2019-10-15 01:14:55,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:55,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2019-10-15 01:14:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:55,801 INFO L225 Difference]: With dead ends: 3101 [2019-10-15 01:14:55,802 INFO L226 Difference]: Without dead ends: 1577 [2019-10-15 01:14:55,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 389 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=167, Invalid=3739, Unknown=0, NotChecked=0, Total=3906 [2019-10-15 01:14:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2019-10-15 01:14:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1577. [2019-10-15 01:14:55,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2019-10-15 01:14:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2261 transitions. [2019-10-15 01:14:55,884 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2261 transitions. Word has length 198 [2019-10-15 01:14:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:55,885 INFO L462 AbstractCegarLoop]: Abstraction has 1577 states and 2261 transitions. [2019-10-15 01:14:55,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2261 transitions. [2019-10-15 01:14:55,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-15 01:14:55,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:55,896 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:14:56,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:56,106 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash -766244951, now seen corresponding path program 1 times [2019-10-15 01:14:56,107 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:56,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300252995] [2019-10-15 01:14:56,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:56,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:56,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:14:58,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300252995] [2019-10-15 01:14:58,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:58,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2019-10-15 01:14:58,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696642652] [2019-10-15 01:14:58,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-10-15 01:14:58,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:58,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-10-15 01:14:58,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2160, Unknown=0, NotChecked=0, Total=2256 [2019-10-15 01:14:58,004 INFO L87 Difference]: Start difference. First operand 1577 states and 2261 transitions. Second operand 48 states.