/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_spec9_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:56:30,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:56:30,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:56:30,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:56:30,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:56:30,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:56:30,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:56:30,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:56:30,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:56:30,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:56:30,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:56:30,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:56:30,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:56:30,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:56:30,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:56:30,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:56:30,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:56:30,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:56:30,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:56:30,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:56:30,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:56:30,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:56:30,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:56:30,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:56:30,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:56:30,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:56:30,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:56:30,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:56:30,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:56:30,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:56:30,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:56:30,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:56:30,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:56:30,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:56:30,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:56:30,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:56:30,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:56:30,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:56:30,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:56:30,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:56:30,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:56:30,758 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 00:56:30,784 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:56:30,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:56:30,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:56:30,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:56:30,786 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:56:30,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:56:30,787 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:56:30,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:56:30,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:56:30,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:56:30,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:56:30,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:56:30,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:56:30,788 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:56:30,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:56:30,788 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:56:30,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:56:30,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:56:30,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:56:30,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:56:30,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:56:30,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:56:30,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:56:30,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:56:30,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:56:30,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:56:30,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:56:30,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:56:30,791 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 00:56:31,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:56:31,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:56:31,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:56:31,107 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:56:31,108 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:56:31,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c [2019-11-07 00:56:31,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a208fcf0f/5e8c35cd72f84bd78ac9256cb9ed913e/FLAGf2170c107 [2019-11-07 00:56:31,844 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:56:31,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c [2019-11-07 00:56:31,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a208fcf0f/5e8c35cd72f84bd78ac9256cb9ed913e/FLAGf2170c107 [2019-11-07 00:56:32,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a208fcf0f/5e8c35cd72f84bd78ac9256cb9ed913e [2019-11-07 00:56:32,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:56:32,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:56:32,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:32,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:56:32,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:56:32,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:32" (1/1) ... [2019-11-07 00:56:32,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab00c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:32, skipping insertion in model container [2019-11-07 00:56:32,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:32" (1/1) ... [2019-11-07 00:56:32,078 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:56:32,166 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:56:32,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:32,963 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:56:33,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:33,270 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:56:33,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33 WrapperNode [2019-11-07 00:56:33,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:33,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:56:33,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:56:33,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:56:33,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (1/1) ... [2019-11-07 00:56:33,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:56:33,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:56:33,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:56:33,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:56:33,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (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 00:56:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:56:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:56:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:33,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:56:33,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:56:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:56:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:56:33,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:56:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:56:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:56:33,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:56:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:56:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:56:33,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:56:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:56:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:56:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:56:33,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:56:33,578 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:56:33,578 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:56:33,578 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:56:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:56:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:56:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:56:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:56:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:56:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:56:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:56:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:56:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:56:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:56:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:56:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:56:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:56:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:56:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:56:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:56:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:56:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:56:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:56:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:56:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:56:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:56:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:56:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:56:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:56:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:56:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:56:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:56:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:56:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:56:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:56:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:56:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:56:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:56:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:56:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:56:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:56:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:56:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:56:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:56:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:56:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:56:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:56:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:56:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:56:33,590 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:56:33,590 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:56:33,590 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:56:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:56:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:56:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:56:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:56:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:56:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:56:33,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:56:33,593 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:56:33,594 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:56:33,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:56:33,594 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:56:33,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:56:33,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:56:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:56:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:56:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:56:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:56:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:56:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:56:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:56:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:56:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:56:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:56:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:56:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:56:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:56:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:56:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:56:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:56:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:56:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:56:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:56:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:56:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:56:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:56:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:56:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:56:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:56:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:56:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:56:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:56:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:56:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:56:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:56:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:56:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:56:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:56:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:56:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:56:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:56:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:56:33,609 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:56:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:56:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:56:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:56:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:56:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:56:33,618 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:56:33,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:56:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:56:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:56:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:56:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:56:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:56:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:56:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:56:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:56:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:56:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:56:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:56:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:56:35,943 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:56:35,943 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:56:35,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:35 BoogieIcfgContainer [2019-11-07 00:56:35,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:56:35,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:56:35,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:56:35,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:56:35,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:32" (1/3) ... [2019-11-07 00:56:35,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a6652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:35, skipping insertion in model container [2019-11-07 00:56:35,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33" (2/3) ... [2019-11-07 00:56:35,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a6652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:35, skipping insertion in model container [2019-11-07 00:56:35,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:35" (3/3) ... [2019-11-07 00:56:35,955 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product20.cil.c [2019-11-07 00:56:35,966 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:56:35,976 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:56:35,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:56:36,027 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:56:36,028 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:56:36,028 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:56:36,028 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:56:36,028 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:56:36,029 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:56:36,030 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:56:36,033 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:56:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states. [2019-11-07 00:56:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:56:36,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:36,100 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:36,102 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1483923005, now seen corresponding path program 1 times [2019-11-07 00:56:36,116 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:36,116 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071006583] [2019-11-07 00:56:36,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:36,726 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071006583] [2019-11-07 00:56:36,727 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:36,727 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:56:36,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896766013] [2019-11-07 00:56:36,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:56:36,735 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:36,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:56:36,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:56:36,751 INFO L87 Difference]: Start difference. First operand 563 states. Second operand 2 states. [2019-11-07 00:56:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:36,842 INFO L93 Difference]: Finished difference Result 764 states and 1044 transitions. [2019-11-07 00:56:36,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:56:36,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-11-07 00:56:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:36,879 INFO L225 Difference]: With dead ends: 764 [2019-11-07 00:56:36,880 INFO L226 Difference]: Without dead ends: 510 [2019-11-07 00:56:36,890 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 00:56:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-11-07 00:56:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2019-11-07 00:56:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-11-07 00:56:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 701 transitions. [2019-11-07 00:56:36,991 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 701 transitions. Word has length 154 [2019-11-07 00:56:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:36,994 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 701 transitions. [2019-11-07 00:56:36,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:56:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 701 transitions. [2019-11-07 00:56:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:56:37,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:37,003 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:37,003 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:37,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1309919830, now seen corresponding path program 1 times [2019-11-07 00:56:37,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:37,004 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736736947] [2019-11-07 00:56:37,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:37,228 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736736947] [2019-11-07 00:56:37,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:37,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:37,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831260111] [2019-11-07 00:56:37,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:37,244 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:37,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:37,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:37,244 INFO L87 Difference]: Start difference. First operand 510 states and 701 transitions. Second operand 3 states. [2019-11-07 00:56:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:37,322 INFO L93 Difference]: Finished difference Result 747 states and 1010 transitions. [2019-11-07 00:56:37,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:37,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:56:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:37,333 INFO L225 Difference]: With dead ends: 747 [2019-11-07 00:56:37,333 INFO L226 Difference]: Without dead ends: 513 [2019-11-07 00:56:37,336 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 00:56:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-11-07 00:56:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-11-07 00:56:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-11-07 00:56:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 703 transitions. [2019-11-07 00:56:37,392 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 703 transitions. Word has length 155 [2019-11-07 00:56:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:37,394 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 703 transitions. [2019-11-07 00:56:37,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 703 transitions. [2019-11-07 00:56:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:56:37,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:37,398 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:37,399 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:37,399 INFO L82 PathProgramCache]: Analyzing trace with hash 406210246, now seen corresponding path program 1 times [2019-11-07 00:56:37,399 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:37,400 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665391954] [2019-11-07 00:56:37,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:37,643 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665391954] [2019-11-07 00:56:37,643 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:37,643 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:37,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431084964] [2019-11-07 00:56:37,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:37,644 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:37,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:37,645 INFO L87 Difference]: Start difference. First operand 512 states and 703 transitions. Second operand 3 states. [2019-11-07 00:56:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:37,686 INFO L93 Difference]: Finished difference Result 1002 states and 1407 transitions. [2019-11-07 00:56:37,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:37,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-07 00:56:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:37,692 INFO L225 Difference]: With dead ends: 1002 [2019-11-07 00:56:37,692 INFO L226 Difference]: Without dead ends: 555 [2019-11-07 00:56:37,694 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 00:56:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-07 00:56:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-11-07 00:56:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-11-07 00:56:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 775 transitions. [2019-11-07 00:56:37,739 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 775 transitions. Word has length 165 [2019-11-07 00:56:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:37,739 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 775 transitions. [2019-11-07 00:56:37,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 775 transitions. [2019-11-07 00:56:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:56:37,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:37,744 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:37,744 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1441612235, now seen corresponding path program 1 times [2019-11-07 00:56:37,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:37,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889823688] [2019-11-07 00:56:37,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:37,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889823688] [2019-11-07 00:56:37,909 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:37,909 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:37,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168399683] [2019-11-07 00:56:37,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:37,911 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:37,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:37,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:37,912 INFO L87 Difference]: Start difference. First operand 554 states and 775 transitions. Second operand 3 states. [2019-11-07 00:56:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:37,976 INFO L93 Difference]: Finished difference Result 1125 states and 1618 transitions. [2019-11-07 00:56:37,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:37,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-11-07 00:56:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:37,988 INFO L225 Difference]: With dead ends: 1125 [2019-11-07 00:56:37,988 INFO L226 Difference]: Without dead ends: 636 [2019-11-07 00:56:37,991 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 00:56:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-11-07 00:56:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 635. [2019-11-07 00:56:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 00:56:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 913 transitions. [2019-11-07 00:56:38,039 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 913 transitions. Word has length 166 [2019-11-07 00:56:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:38,040 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 913 transitions. [2019-11-07 00:56:38,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 913 transitions. [2019-11-07 00:56:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:56:38,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:38,052 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:38,053 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1339391418, now seen corresponding path program 1 times [2019-11-07 00:56:38,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:38,054 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987776817] [2019-11-07 00:56:38,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:38,386 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987776817] [2019-11-07 00:56:38,386 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:38,387 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:38,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282069219] [2019-11-07 00:56:38,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:38,388 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:38,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:38,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:38,389 INFO L87 Difference]: Start difference. First operand 635 states and 913 transitions. Second operand 3 states. [2019-11-07 00:56:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:38,432 INFO L93 Difference]: Finished difference Result 1362 states and 2022 transitions. [2019-11-07 00:56:38,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:38,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-11-07 00:56:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:38,439 INFO L225 Difference]: With dead ends: 1362 [2019-11-07 00:56:38,440 INFO L226 Difference]: Without dead ends: 792 [2019-11-07 00:56:38,442 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 00:56:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-11-07 00:56:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 791. [2019-11-07 00:56:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-11-07 00:56:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1177 transitions. [2019-11-07 00:56:38,488 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1177 transitions. Word has length 167 [2019-11-07 00:56:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:38,489 INFO L462 AbstractCegarLoop]: Abstraction has 791 states and 1177 transitions. [2019-11-07 00:56:38,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1177 transitions. [2019-11-07 00:56:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:56:38,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:38,494 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:38,495 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 771079861, now seen corresponding path program 1 times [2019-11-07 00:56:38,495 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:38,495 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608419392] [2019-11-07 00:56:38,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:38,654 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608419392] [2019-11-07 00:56:38,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:38,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:38,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283322972] [2019-11-07 00:56:38,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:38,656 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:38,656 INFO L87 Difference]: Start difference. First operand 791 states and 1177 transitions. Second operand 3 states. [2019-11-07 00:56:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:38,712 INFO L93 Difference]: Finished difference Result 1818 states and 2794 transitions. [2019-11-07 00:56:38,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:38,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:56:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:38,720 INFO L225 Difference]: With dead ends: 1818 [2019-11-07 00:56:38,720 INFO L226 Difference]: Without dead ends: 1092 [2019-11-07 00:56:38,723 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 00:56:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-11-07 00:56:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1091. [2019-11-07 00:56:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-11-07 00:56:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1681 transitions. [2019-11-07 00:56:38,776 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1681 transitions. Word has length 168 [2019-11-07 00:56:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:38,778 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1681 transitions. [2019-11-07 00:56:38,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1681 transitions. [2019-11-07 00:56:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:56:38,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:38,785 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:38,786 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:38,786 INFO L82 PathProgramCache]: Analyzing trace with hash -846644512, now seen corresponding path program 1 times [2019-11-07 00:56:38,786 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:38,787 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583774921] [2019-11-07 00:56:38,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:56:39,180 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583774921] [2019-11-07 00:56:39,180 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:39,180 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:39,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659832513] [2019-11-07 00:56:39,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:39,181 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:39,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:39,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:39,182 INFO L87 Difference]: Start difference. First operand 1091 states and 1681 transitions. Second operand 3 states. [2019-11-07 00:56:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:39,249 INFO L93 Difference]: Finished difference Result 1426 states and 2141 transitions. [2019-11-07 00:56:39,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:39,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 00:56:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:39,261 INFO L225 Difference]: With dead ends: 1426 [2019-11-07 00:56:39,261 INFO L226 Difference]: Without dead ends: 1205 [2019-11-07 00:56:39,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 00:56:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-11-07 00:56:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1204. [2019-11-07 00:56:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-11-07 00:56:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1843 transitions. [2019-11-07 00:56:39,345 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1843 transitions. Word has length 171 [2019-11-07 00:56:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:39,346 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1843 transitions. [2019-11-07 00:56:39,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1843 transitions. [2019-11-07 00:56:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2019-11-07 00:56:39,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:39,358 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:39,358 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:39,359 INFO L82 PathProgramCache]: Analyzing trace with hash -528556357, now seen corresponding path program 1 times [2019-11-07 00:56:39,359 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:39,359 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61014873] [2019-11-07 00:56:39,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:39,624 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61014873] [2019-11-07 00:56:39,624 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:39,624 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:56:39,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525297504] [2019-11-07 00:56:39,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:56:39,625 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:56:39,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:56:39,626 INFO L87 Difference]: Start difference. First operand 1204 states and 1843 transitions. Second operand 6 states. [2019-11-07 00:56:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:40,440 INFO L93 Difference]: Finished difference Result 2682 states and 4084 transitions. [2019-11-07 00:56:40,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:56:40,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2019-11-07 00:56:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:40,458 INFO L225 Difference]: With dead ends: 2682 [2019-11-07 00:56:40,459 INFO L226 Difference]: Without dead ends: 2359 [2019-11-07 00:56:40,461 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 00:56:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2019-11-07 00:56:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2348. [2019-11-07 00:56:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-11-07 00:56:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3636 transitions. [2019-11-07 00:56:40,630 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3636 transitions. Word has length 295 [2019-11-07 00:56:40,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:40,631 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3636 transitions. [2019-11-07 00:56:40,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:56:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3636 transitions. [2019-11-07 00:56:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-11-07 00:56:40,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:40,655 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:40,656 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:40,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1922537697, now seen corresponding path program 1 times [2019-11-07 00:56:40,656 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:40,657 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979091250] [2019-11-07 00:56:40,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:41,060 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979091250] [2019-11-07 00:56:41,061 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:41,061 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:56:41,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830098924] [2019-11-07 00:56:41,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:56:41,062 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:41,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:56:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:56:41,063 INFO L87 Difference]: Start difference. First operand 2348 states and 3636 transitions. Second operand 9 states. [2019-11-07 00:56:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:41,485 INFO L93 Difference]: Finished difference Result 2991 states and 4495 transitions. [2019-11-07 00:56:41,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:56:41,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2019-11-07 00:56:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:41,500 INFO L225 Difference]: With dead ends: 2991 [2019-11-07 00:56:41,500 INFO L226 Difference]: Without dead ends: 2322 [2019-11-07 00:56:41,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:56:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2019-11-07 00:56:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2019-11-07 00:56:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2019-11-07 00:56:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3585 transitions. [2019-11-07 00:56:41,641 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3585 transitions. Word has length 296 [2019-11-07 00:56:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:41,642 INFO L462 AbstractCegarLoop]: Abstraction has 2318 states and 3585 transitions. [2019-11-07 00:56:41,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:56:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3585 transitions. [2019-11-07 00:56:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-11-07 00:56:41,657 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:41,658 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:41,658 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1501375971, now seen corresponding path program 1 times [2019-11-07 00:56:41,659 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:41,659 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499778232] [2019-11-07 00:56:41,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:56:42,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499778232] [2019-11-07 00:56:42,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859225062] [2019-11-07 00:56:42,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:42,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:42,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:56:43,238 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:43,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:43,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:44,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:44,279 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:44,280 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:56:44,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919059100] [2019-11-07 00:56:44,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:56:44,287 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:56:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:44,288 INFO L87 Difference]: Start difference. First operand 2318 states and 3585 transitions. Second operand 9 states. [2019-11-07 00:56:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:45,897 INFO L93 Difference]: Finished difference Result 4614 states and 7150 transitions. [2019-11-07 00:56:45,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:56:45,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2019-11-07 00:56:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:45,913 INFO L225 Difference]: With dead ends: 4614 [2019-11-07 00:56:45,913 INFO L226 Difference]: Without dead ends: 2332 [2019-11-07 00:56:45,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:56:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-11-07 00:56:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2332. [2019-11-07 00:56:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2019-11-07 00:56:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3603 transitions. [2019-11-07 00:56:46,062 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3603 transitions. Word has length 289 [2019-11-07 00:56:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:46,062 INFO L462 AbstractCegarLoop]: Abstraction has 2332 states and 3603 transitions. [2019-11-07 00:56:46,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:56:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3603 transitions. [2019-11-07 00:56:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-11-07 00:56:46,076 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:46,077 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:46,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:46,288 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1523993304, now seen corresponding path program 1 times [2019-11-07 00:56:46,289 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:46,289 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352958567] [2019-11-07 00:56:46,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:56:46,944 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352958567] [2019-11-07 00:56:46,944 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623189870] [2019-11-07 00:56:46,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:47,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:47,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:56:47,840 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:48,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:48,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:48,472 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:48,472 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:56:48,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289957116] [2019-11-07 00:56:48,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:56:48,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:56:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:48,474 INFO L87 Difference]: Start difference. First operand 2332 states and 3603 transitions. Second operand 7 states. [2019-11-07 00:56:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:50,121 INFO L93 Difference]: Finished difference Result 4617 states and 7171 transitions. [2019-11-07 00:56:50,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:56:50,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2019-11-07 00:56:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:50,140 INFO L225 Difference]: With dead ends: 4617 [2019-11-07 00:56:50,141 INFO L226 Difference]: Without dead ends: 2336 [2019-11-07 00:56:50,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:56:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2019-11-07 00:56:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2019-11-07 00:56:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-11-07 00:56:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3608 transitions. [2019-11-07 00:56:50,295 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3608 transitions. Word has length 290 [2019-11-07 00:56:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:50,296 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3608 transitions. [2019-11-07 00:56:50,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:56:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3608 transitions. [2019-11-07 00:56:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2019-11-07 00:56:50,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:50,317 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:50,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:50,526 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:50,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1588016139, now seen corresponding path program 1 times [2019-11-07 00:56:50,527 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:50,527 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365801835] [2019-11-07 00:56:50,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:56:51,031 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365801835] [2019-11-07 00:56:51,031 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643638996] [2019-11-07 00:56:51,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:51,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:51,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:56:52,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:52,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:52,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:52,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:52,842 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:52,842 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:56:52,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514218526] [2019-11-07 00:56:52,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:56:52,844 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:56:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:56:52,845 INFO L87 Difference]: Start difference. First operand 2336 states and 3608 transitions. Second operand 16 states. [2019-11-07 00:56:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:54,407 INFO L93 Difference]: Finished difference Result 4623 states and 7158 transitions. [2019-11-07 00:56:54,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:54,408 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 291 [2019-11-07 00:56:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:54,427 INFO L225 Difference]: With dead ends: 4623 [2019-11-07 00:56:54,427 INFO L226 Difference]: Without dead ends: 2348 [2019-11-07 00:56:54,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:56:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-11-07 00:56:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-11-07 00:56:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-11-07 00:56:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3619 transitions. [2019-11-07 00:56:54,581 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3619 transitions. Word has length 291 [2019-11-07 00:56:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:54,582 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3619 transitions. [2019-11-07 00:56:54,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:56:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3619 transitions. [2019-11-07 00:56:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-11-07 00:56:54,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:54,599 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:54,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:54,809 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash 153111168, now seen corresponding path program 2 times [2019-11-07 00:56:54,810 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:54,811 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491148670] [2019-11-07 00:56:54,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 00:56:55,389 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491148670] [2019-11-07 00:56:55,389 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551245460] [2019-11-07 00:56:55,390 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:56,076 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:56:56,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:56,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:56,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:56:56,294 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:56,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:56,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:56:56,985 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:56,986 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:56:56,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800123580] [2019-11-07 00:56:56,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:56:56,987 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:56,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:56:56,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:56:56,988 INFO L87 Difference]: Start difference. First operand 2346 states and 3619 transitions. Second operand 12 states. [2019-11-07 00:56:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:58,833 INFO L93 Difference]: Finished difference Result 4614 states and 7146 transitions. [2019-11-07 00:56:58,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:56:58,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2019-11-07 00:56:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:58,847 INFO L225 Difference]: With dead ends: 4614 [2019-11-07 00:56:58,847 INFO L226 Difference]: Without dead ends: 2348 [2019-11-07 00:56:58,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-11-07 00:56:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-11-07 00:56:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-11-07 00:56:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3618 transitions. [2019-11-07 00:56:58,954 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3618 transitions. Word has length 292 [2019-11-07 00:56:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:58,955 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3618 transitions. [2019-11-07 00:56:58,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:56:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3618 transitions. [2019-11-07 00:56:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-11-07 00:56:58,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:58,973 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:59,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:59,183 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1516843795, now seen corresponding path program 3 times [2019-11-07 00:56:59,183 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:59,183 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822873548] [2019-11-07 00:56:59,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:59,631 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822873548] [2019-11-07 00:56:59,631 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110380519] [2019-11-07 00:56:59,631 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:00,324 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:57:00,324 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:57:00,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:00,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:57:00,844 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:01,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:01,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:01,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:57:01,702 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:01,703 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-11-07 00:57:01,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591395905] [2019-11-07 00:57:01,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:57:01,704 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:57:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:01,705 INFO L87 Difference]: Start difference. First operand 2346 states and 3618 transitions. Second operand 15 states.