/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:46:28,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:46:28,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:46:28,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:46:28,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:46:28,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:46:28,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:46:28,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:46:28,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:46:28,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:46:28,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:46:28,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:46:28,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:46:28,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:46:28,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:46:28,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:46:28,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:46:28,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:46:28,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:46:28,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:46:28,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:46:28,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:46:28,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:46:28,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:46:28,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:46:28,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:46:28,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:46:28,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:46:28,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:46:28,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:46:28,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:46:28,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:46:28,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:46:28,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:46:28,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:46:28,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:46:28,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:46:28,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:46:28,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:46:28,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:46:28,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:46:28,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:46:28,779 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:46:28,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:46:28,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:46:28,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:46:28,782 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:46:28,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:46:28,782 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:46:28,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:46:28,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:46:28,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:46:28,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:46:28,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:46:28,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:46:28,783 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:46:28,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:46:28,784 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:46:28,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:46:28,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:46:28,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:46:28,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:46:28,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:46:28,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:46:28,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:46:28,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:46:28,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:46:28,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:46:28,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:46:28,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:46:28,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:46:29,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:46:29,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:46:29,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:46:29,116 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:46:29,117 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:46:29,118 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c [2019-11-07 00:46:29,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558a1833a/49fc785fb42b43fd99dc07c41257fe09/FLAGecf713df1 [2019-11-07 00:46:29,799 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:46:29,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c [2019-11-07 00:46:29,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558a1833a/49fc785fb42b43fd99dc07c41257fe09/FLAGecf713df1 [2019-11-07 00:46:30,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558a1833a/49fc785fb42b43fd99dc07c41257fe09 [2019-11-07 00:46:30,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:46:30,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:46:30,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:30,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:46:30,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:46:30,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:30" (1/1) ... [2019-11-07 00:46:30,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6dbe87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:30, skipping insertion in model container [2019-11-07 00:46:30,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:30" (1/1) ... [2019-11-07 00:46:30,042 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:46:30,128 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:46:30,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:31,000 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:46:31,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:31,227 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:46:31,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31 WrapperNode [2019-11-07 00:46:31,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:31,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:46:31,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:46:31,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:46:31,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... [2019-11-07 00:46:31,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:46:31,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:46:31,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:46:31,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:46:31,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:46:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:46:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:46:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:46:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:46:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:46:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:46:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:46:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:46:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:46:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:46:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:46:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:46:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:46:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:46:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:46:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:46:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:46:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:46:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:46:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:46:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:46:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:46:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:46:31,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:46:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:46:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:46:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:46:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-11-07 00:46:31,463 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:46:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:46:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:46:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:46:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:46:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:46:31,464 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:46:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:46:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:46:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:46:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:46:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:46:31,465 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:46:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:46:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:46:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:46:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:46:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:46:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:46:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:46:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:46:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:46:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:46:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:46:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:46:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:46:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:46:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:46:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:46:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-11-07 00:46:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:46:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:46:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:46:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:46:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:46:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:46:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:46:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:46:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:46:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:46:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:46:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:46:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:46:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:46:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:46:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:46:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:46:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:46:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:46:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:46:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:46:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:46:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:46:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:46:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:46:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:46:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:46:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:46:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:46:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:46:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:46:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:46:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:46:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:46:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:46:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:46:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:46:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:46:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:46:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:46:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:46:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:46:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:46:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:46:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:46:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:46:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:46:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:46:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:46:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:46:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:46:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:46:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:46:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:46:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:46:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:46:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:46:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:46:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:46:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:46:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:46:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:46:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:46:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:46:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:46:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:46:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:46:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:46:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:46:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:46:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:46:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:46:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:46:31,486 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:46:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:46:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:46:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:46:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:46:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:46:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:46:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:46:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:46:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:46:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:46:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:46:33,579 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:46:33,580 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:46:33,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:46:33 BoogieIcfgContainer [2019-11-07 00:46:33,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:46:33,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:46:33,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:46:33,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:46:33,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:46:30" (1/3) ... [2019-11-07 00:46:33,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146d6a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:46:33, skipping insertion in model container [2019-11-07 00:46:33,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:31" (2/3) ... [2019-11-07 00:46:33,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146d6a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:46:33, skipping insertion in model container [2019-11-07 00:46:33,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:46:33" (3/3) ... [2019-11-07 00:46:33,592 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product40.cil.c [2019-11-07 00:46:33,603 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:46:33,615 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:46:33,628 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:46:33,673 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:46:33,673 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:46:33,674 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:46:33,674 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:46:33,674 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:46:33,674 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:46:33,674 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:46:33,674 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:46:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states. [2019-11-07 00:46:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-07 00:46:33,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:33,763 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:33,766 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2061409221, now seen corresponding path program 1 times [2019-11-07 00:46:33,786 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:33,788 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766789361] [2019-11-07 00:46:33,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:34,530 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766789361] [2019-11-07 00:46:34,530 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:34,531 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:46:34,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446908587] [2019-11-07 00:46:34,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:46:34,539 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:34,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:46:34,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:46:34,556 INFO L87 Difference]: Start difference. First operand 511 states. Second operand 2 states. [2019-11-07 00:46:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:34,631 INFO L93 Difference]: Finished difference Result 697 states and 939 transitions. [2019-11-07 00:46:34,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:46:34,632 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 177 [2019-11-07 00:46:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:34,660 INFO L225 Difference]: With dead ends: 697 [2019-11-07 00:46:34,660 INFO L226 Difference]: Without dead ends: 482 [2019-11-07 00:46:34,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:46:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-11-07 00:46:34,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2019-11-07 00:46:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-11-07 00:46:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 655 transitions. [2019-11-07 00:46:34,818 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 655 transitions. Word has length 177 [2019-11-07 00:46:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:34,820 INFO L462 AbstractCegarLoop]: Abstraction has 482 states and 655 transitions. [2019-11-07 00:46:34,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:46:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 655 transitions. [2019-11-07 00:46:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-11-07 00:46:34,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:34,829 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:34,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:34,830 INFO L82 PathProgramCache]: Analyzing trace with hash -956753639, now seen corresponding path program 1 times [2019-11-07 00:46:34,830 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:34,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128420622] [2019-11-07 00:46:34,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:35,035 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128420622] [2019-11-07 00:46:35,035 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:35,035 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:35,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166535110] [2019-11-07 00:46:35,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:35,040 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:35,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:35,044 INFO L87 Difference]: Start difference. First operand 482 states and 655 transitions. Second operand 3 states. [2019-11-07 00:46:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:35,118 INFO L93 Difference]: Finished difference Result 680 states and 904 transitions. [2019-11-07 00:46:35,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:35,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-11-07 00:46:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:35,129 INFO L225 Difference]: With dead ends: 680 [2019-11-07 00:46:35,129 INFO L226 Difference]: Without dead ends: 485 [2019-11-07 00:46:35,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-11-07 00:46:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2019-11-07 00:46:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2019-11-07 00:46:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 657 transitions. [2019-11-07 00:46:35,168 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 657 transitions. Word has length 178 [2019-11-07 00:46:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:35,169 INFO L462 AbstractCegarLoop]: Abstraction has 484 states and 657 transitions. [2019-11-07 00:46:35,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 657 transitions. [2019-11-07 00:46:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:46:35,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:35,175 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:35,175 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:35,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:35,175 INFO L82 PathProgramCache]: Analyzing trace with hash 239347080, now seen corresponding path program 1 times [2019-11-07 00:46:35,176 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:35,176 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737990439] [2019-11-07 00:46:35,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:35,494 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737990439] [2019-11-07 00:46:35,494 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:35,494 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:35,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937606987] [2019-11-07 00:46:35,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:35,499 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:35,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:35,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:35,500 INFO L87 Difference]: Start difference. First operand 484 states and 657 transitions. Second operand 3 states. [2019-11-07 00:46:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:35,566 INFO L93 Difference]: Finished difference Result 948 states and 1318 transitions. [2019-11-07 00:46:35,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:35,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-11-07 00:46:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:35,576 INFO L225 Difference]: With dead ends: 948 [2019-11-07 00:46:35,576 INFO L226 Difference]: Without dead ends: 529 [2019-11-07 00:46:35,579 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2019-11-07 00:46:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 528. [2019-11-07 00:46:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2019-11-07 00:46:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 732 transitions. [2019-11-07 00:46:35,639 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 732 transitions. Word has length 190 [2019-11-07 00:46:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:35,640 INFO L462 AbstractCegarLoop]: Abstraction has 528 states and 732 transitions. [2019-11-07 00:46:35,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 732 transitions. [2019-11-07 00:46:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 00:46:35,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:35,655 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:35,655 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash 459421880, now seen corresponding path program 1 times [2019-11-07 00:46:35,656 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:35,656 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681961300] [2019-11-07 00:46:35,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:35,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681961300] [2019-11-07 00:46:35,947 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:35,948 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:35,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613164184] [2019-11-07 00:46:35,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:35,951 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:35,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:35,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:35,952 INFO L87 Difference]: Start difference. First operand 528 states and 732 transitions. Second operand 3 states. [2019-11-07 00:46:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:36,017 INFO L93 Difference]: Finished difference Result 1077 states and 1538 transitions. [2019-11-07 00:46:36,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:36,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-11-07 00:46:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:36,025 INFO L225 Difference]: With dead ends: 1077 [2019-11-07 00:46:36,025 INFO L226 Difference]: Without dead ends: 614 [2019-11-07 00:46:36,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-11-07 00:46:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 613. [2019-11-07 00:46:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-11-07 00:46:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 876 transitions. [2019-11-07 00:46:36,068 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 876 transitions. Word has length 191 [2019-11-07 00:46:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:36,069 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 876 transitions. [2019-11-07 00:46:36,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 876 transitions. [2019-11-07 00:46:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:46:36,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:36,075 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:36,075 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash 655741416, now seen corresponding path program 1 times [2019-11-07 00:46:36,075 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:36,076 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358858508] [2019-11-07 00:46:36,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:36,329 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358858508] [2019-11-07 00:46:36,329 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:36,329 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:36,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738176609] [2019-11-07 00:46:36,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:36,330 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:36,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:36,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:36,331 INFO L87 Difference]: Start difference. First operand 613 states and 876 transitions. Second operand 3 states. [2019-11-07 00:46:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:36,374 INFO L93 Difference]: Finished difference Result 1326 states and 1960 transitions. [2019-11-07 00:46:36,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:36,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-07 00:46:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:36,381 INFO L225 Difference]: With dead ends: 1326 [2019-11-07 00:46:36,381 INFO L226 Difference]: Without dead ends: 778 [2019-11-07 00:46:36,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2019-11-07 00:46:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 777. [2019-11-07 00:46:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-11-07 00:46:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1152 transitions. [2019-11-07 00:46:36,429 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1152 transitions. Word has length 192 [2019-11-07 00:46:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:36,429 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 1152 transitions. [2019-11-07 00:46:36,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1152 transitions. [2019-11-07 00:46:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 00:46:36,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:36,436 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:36,436 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1935139716, now seen corresponding path program 1 times [2019-11-07 00:46:36,437 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:36,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139289095] [2019-11-07 00:46:36,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:36,755 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139289095] [2019-11-07 00:46:36,756 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:36,756 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-07 00:46:36,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661382791] [2019-11-07 00:46:36,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-07 00:46:36,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-07 00:46:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:46:36,759 INFO L87 Difference]: Start difference. First operand 777 states and 1152 transitions. Second operand 13 states. [2019-11-07 00:46:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:39,593 INFO L93 Difference]: Finished difference Result 1686 states and 2497 transitions. [2019-11-07 00:46:39,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:46:39,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 194 [2019-11-07 00:46:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:39,605 INFO L225 Difference]: With dead ends: 1686 [2019-11-07 00:46:39,605 INFO L226 Difference]: Without dead ends: 1504 [2019-11-07 00:46:39,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:46:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2019-11-07 00:46:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1496. [2019-11-07 00:46:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2019-11-07 00:46:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2243 transitions. [2019-11-07 00:46:39,683 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2243 transitions. Word has length 194 [2019-11-07 00:46:39,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:39,684 INFO L462 AbstractCegarLoop]: Abstraction has 1496 states and 2243 transitions. [2019-11-07 00:46:39,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-07 00:46:39,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2243 transitions. [2019-11-07 00:46:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 00:46:39,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:39,693 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:39,693 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1955843160, now seen corresponding path program 1 times [2019-11-07 00:46:39,694 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:39,694 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172040029] [2019-11-07 00:46:39,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:39,827 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172040029] [2019-11-07 00:46:39,827 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:39,827 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:39,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272148519] [2019-11-07 00:46:39,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:39,828 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:39,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:39,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:39,829 INFO L87 Difference]: Start difference. First operand 1496 states and 2243 transitions. Second operand 3 states. [2019-11-07 00:46:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:39,912 INFO L93 Difference]: Finished difference Result 3561 states and 5491 transitions. [2019-11-07 00:46:39,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:39,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-07 00:46:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:39,925 INFO L225 Difference]: With dead ends: 3561 [2019-11-07 00:46:39,925 INFO L226 Difference]: Without dead ends: 2130 [2019-11-07 00:46:39,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2019-11-07 00:46:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2128. [2019-11-07 00:46:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2128 states. [2019-11-07 00:46:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 3303 transitions. [2019-11-07 00:46:40,109 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 3303 transitions. Word has length 193 [2019-11-07 00:46:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:40,110 INFO L462 AbstractCegarLoop]: Abstraction has 2128 states and 3303 transitions. [2019-11-07 00:46:40,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 3303 transitions. [2019-11-07 00:46:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:46:40,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:40,126 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:40,127 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1693972236, now seen corresponding path program 1 times [2019-11-07 00:46:40,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:40,128 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430258930] [2019-11-07 00:46:40,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:40,343 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430258930] [2019-11-07 00:46:40,343 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:40,343 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:46:40,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857922763] [2019-11-07 00:46:40,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:46:40,344 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:40,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:46:40,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:40,345 INFO L87 Difference]: Start difference. First operand 2128 states and 3303 transitions. Second operand 9 states. [2019-11-07 00:46:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:40,547 INFO L93 Difference]: Finished difference Result 2520 states and 3813 transitions. [2019-11-07 00:46:40,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:46:40,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 195 [2019-11-07 00:46:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:40,561 INFO L225 Difference]: With dead ends: 2520 [2019-11-07 00:46:40,561 INFO L226 Difference]: Without dead ends: 2151 [2019-11-07 00:46:40,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:46:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2019-11-07 00:46:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2139. [2019-11-07 00:46:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2019-11-07 00:46:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3317 transitions. [2019-11-07 00:46:40,680 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3317 transitions. Word has length 195 [2019-11-07 00:46:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:40,681 INFO L462 AbstractCegarLoop]: Abstraction has 2139 states and 3317 transitions. [2019-11-07 00:46:40,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:46:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3317 transitions. [2019-11-07 00:46:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:46:40,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:40,693 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:40,693 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:40,694 INFO L82 PathProgramCache]: Analyzing trace with hash 839709138, now seen corresponding path program 1 times [2019-11-07 00:46:40,694 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:40,694 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231530368] [2019-11-07 00:46:40,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:40,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231530368] [2019-11-07 00:46:40,861 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:40,862 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:46:40,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765583517] [2019-11-07 00:46:40,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:46:40,863 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:40,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:46:40,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:46:40,864 INFO L87 Difference]: Start difference. First operand 2139 states and 3317 transitions. Second operand 6 states. [2019-11-07 00:46:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:41,526 INFO L93 Difference]: Finished difference Result 4609 states and 7105 transitions. [2019-11-07 00:46:41,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:46:41,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2019-11-07 00:46:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:41,554 INFO L225 Difference]: With dead ends: 4609 [2019-11-07 00:46:41,554 INFO L226 Difference]: Without dead ends: 4229 [2019-11-07 00:46:41,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2019-11-07 00:46:41,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4218. [2019-11-07 00:46:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4218 states. [2019-11-07 00:46:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 6603 transitions. [2019-11-07 00:46:41,800 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 6603 transitions. Word has length 195 [2019-11-07 00:46:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:41,801 INFO L462 AbstractCegarLoop]: Abstraction has 4218 states and 6603 transitions. [2019-11-07 00:46:41,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:46:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 6603 transitions. [2019-11-07 00:46:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:46:41,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:41,825 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:41,825 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:41,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1262166346, now seen corresponding path program 1 times [2019-11-07 00:46:41,826 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:41,826 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025566661] [2019-11-07 00:46:41,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:42,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025566661] [2019-11-07 00:46:42,102 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:42,102 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:46:42,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183367989] [2019-11-07 00:46:42,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:46:42,105 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:46:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:46:42,106 INFO L87 Difference]: Start difference. First operand 4218 states and 6603 transitions. Second operand 6 states. [2019-11-07 00:46:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:42,805 INFO L93 Difference]: Finished difference Result 9180 states and 14245 transitions. [2019-11-07 00:46:42,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:46:42,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2019-11-07 00:46:42,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:42,875 INFO L225 Difference]: With dead ends: 9180 [2019-11-07 00:46:42,875 INFO L226 Difference]: Without dead ends: 8415 [2019-11-07 00:46:42,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8415 states. [2019-11-07 00:46:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8415 to 8376. [2019-11-07 00:46:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8376 states. [2019-11-07 00:46:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 13209 transitions. [2019-11-07 00:46:43,483 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 13209 transitions. Word has length 196 [2019-11-07 00:46:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:43,484 INFO L462 AbstractCegarLoop]: Abstraction has 8376 states and 13209 transitions. [2019-11-07 00:46:43,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:46:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 13209 transitions. [2019-11-07 00:46:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:46:43,689 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:43,690 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:43,690 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:43,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2024527560, now seen corresponding path program 1 times [2019-11-07 00:46:43,691 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:43,691 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123861721] [2019-11-07 00:46:43,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:43,873 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123861721] [2019-11-07 00:46:43,873 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:43,873 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:46:43,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493368432] [2019-11-07 00:46:43,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:46:43,874 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:43,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:46:43,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:43,875 INFO L87 Difference]: Start difference. First operand 8376 states and 13209 transitions. Second operand 9 states. [2019-11-07 00:46:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:44,207 INFO L93 Difference]: Finished difference Result 10031 states and 15371 transitions. [2019-11-07 00:46:44,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:46:44,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-11-07 00:46:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:44,263 INFO L225 Difference]: With dead ends: 10031 [2019-11-07 00:46:44,263 INFO L226 Difference]: Without dead ends: 8496 [2019-11-07 00:46:44,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:46:44,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2019-11-07 00:46:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 8456. [2019-11-07 00:46:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8456 states. [2019-11-07 00:46:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8456 states to 8456 states and 13321 transitions. [2019-11-07 00:46:44,833 INFO L78 Accepts]: Start accepts. Automaton has 8456 states and 13321 transitions. Word has length 197 [2019-11-07 00:46:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:44,834 INFO L462 AbstractCegarLoop]: Abstraction has 8456 states and 13321 transitions. [2019-11-07 00:46:44,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:46:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8456 states and 13321 transitions. [2019-11-07 00:46:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:46:44,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:44,889 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:44,889 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1416443918, now seen corresponding path program 1 times [2019-11-07 00:46:44,890 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:44,890 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004857275] [2019-11-07 00:46:44,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:45,143 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004857275] [2019-11-07 00:46:45,143 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:45,143 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:46:45,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586510487] [2019-11-07 00:46:45,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:46:45,145 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:45,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:46:45,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:45,146 INFO L87 Difference]: Start difference. First operand 8456 states and 13321 transitions. Second operand 9 states. [2019-11-07 00:46:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:45,508 INFO L93 Difference]: Finished difference Result 10111 states and 15469 transitions. [2019-11-07 00:46:45,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:46:45,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-11-07 00:46:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:45,547 INFO L225 Difference]: With dead ends: 10111 [2019-11-07 00:46:45,547 INFO L226 Difference]: Without dead ends: 8496 [2019-11-07 00:46:45,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:46:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2019-11-07 00:46:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 8456. [2019-11-07 00:46:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8456 states. [2019-11-07 00:46:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8456 states to 8456 states and 13299 transitions. [2019-11-07 00:46:46,047 INFO L78 Accepts]: Start accepts. Automaton has 8456 states and 13299 transitions. Word has length 197 [2019-11-07 00:46:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:46,048 INFO L462 AbstractCegarLoop]: Abstraction has 8456 states and 13299 transitions. [2019-11-07 00:46:46,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:46:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8456 states and 13299 transitions. [2019-11-07 00:46:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:46:46,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:46,095 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:46,096 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:46,096 INFO L82 PathProgramCache]: Analyzing trace with hash -457825732, now seen corresponding path program 1 times [2019-11-07 00:46:46,097 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:46,097 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649025307] [2019-11-07 00:46:46,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:46,373 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649025307] [2019-11-07 00:46:46,373 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:46,373 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:46:46,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712811943] [2019-11-07 00:46:46,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:46:46,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:46,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:46:46,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:46:46,376 INFO L87 Difference]: Start difference. First operand 8456 states and 13299 transitions. Second operand 6 states. [2019-11-07 00:46:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:47,350 INFO L93 Difference]: Finished difference Result 18450 states and 28713 transitions. [2019-11-07 00:46:47,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:46:47,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2019-11-07 00:46:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:47,417 INFO L225 Difference]: With dead ends: 18450 [2019-11-07 00:46:47,417 INFO L226 Difference]: Without dead ends: 16468 [2019-11-07 00:46:47,434 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:46:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16468 states. [2019-11-07 00:46:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16468 to 16407. [2019-11-07 00:46:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16407 states. [2019-11-07 00:46:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16407 states to 16407 states and 26017 transitions. [2019-11-07 00:46:48,346 INFO L78 Accepts]: Start accepts. Automaton has 16407 states and 26017 transitions. Word has length 198 [2019-11-07 00:46:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:48,347 INFO L462 AbstractCegarLoop]: Abstraction has 16407 states and 26017 transitions. [2019-11-07 00:46:48,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:46:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 16407 states and 26017 transitions. [2019-11-07 00:46:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-07 00:46:48,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:48,405 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:48,405 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:48,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:48,405 INFO L82 PathProgramCache]: Analyzing trace with hash -125865389, now seen corresponding path program 1 times [2019-11-07 00:46:48,406 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:48,406 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009607456] [2019-11-07 00:46:48,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:46:48,547 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009607456] [2019-11-07 00:46:48,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:48,548 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:48,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262362358] [2019-11-07 00:46:48,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:48,549 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:48,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:48,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:48,549 INFO L87 Difference]: Start difference. First operand 16407 states and 26017 transitions. Second operand 3 states. [2019-11-07 00:46:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:50,039 INFO L93 Difference]: Finished difference Result 42493 states and 68713 transitions. [2019-11-07 00:46:50,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:50,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-11-07 00:46:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:50,152 INFO L225 Difference]: With dead ends: 42493 [2019-11-07 00:46:50,152 INFO L226 Difference]: Without dead ends: 26149 [2019-11-07 00:46:50,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26149 states. [2019-11-07 00:46:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26149 to 26135. [2019-11-07 00:46:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26135 states. [2019-11-07 00:46:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26135 states to 26135 states and 42497 transitions. [2019-11-07 00:46:51,473 INFO L78 Accepts]: Start accepts. Automaton has 26135 states and 42497 transitions. Word has length 201 [2019-11-07 00:46:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:51,473 INFO L462 AbstractCegarLoop]: Abstraction has 26135 states and 42497 transitions. [2019-11-07 00:46:51,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 26135 states and 42497 transitions. [2019-11-07 00:46:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-07 00:46:51,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:51,568 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:46:51,568 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1306151587, now seen corresponding path program 1 times [2019-11-07 00:46:51,569 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:51,569 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557545141] [2019-11-07 00:46:51,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:46:51,756 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557545141] [2019-11-07 00:46:51,756 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:51,756 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:46:51,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553781638] [2019-11-07 00:46:51,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:46:51,757 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:46:51,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:46:51,758 INFO L87 Difference]: Start difference. First operand 26135 states and 42497 transitions. Second operand 8 states. [2019-11-07 00:46:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:52,272 INFO L93 Difference]: Finished difference Result 26135 states and 42497 transitions. [2019-11-07 00:46:52,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:46:52,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2019-11-07 00:46:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:52,274 INFO L225 Difference]: With dead ends: 26135 [2019-11-07 00:46:52,274 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:46:52,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:46:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:46:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:46:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:46:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:46:52,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 202 [2019-11-07 00:46:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:52,354 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:46:52,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:46:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:46:52,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:46:52,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:46:52,990 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 6 [2019-11-07 00:46:53,130 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 10 [2019-11-07 00:46:53,358 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 10 [2019-11-07 00:46:55,221 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 6 [2019-11-07 00:46:55,542 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 6 [2019-11-07 00:46:55,832 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 536 DAG size of output: 6 [2019-11-07 00:46:56,011 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 10 [2019-11-07 00:46:56,274 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 6 [2019-11-07 00:46:57,400 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 6 [2019-11-07 00:46:57,710 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 532 DAG size of output: 6