/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_spec8_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:55:59,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:55:59,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:55:59,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:55:59,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:55:59,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:55:59,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:55:59,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:55:59,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:55:59,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:55:59,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:55:59,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:55:59,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:55:59,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:55:59,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:55:59,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:55:59,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:55:59,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:55:59,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:55:59,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:55:59,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:55:59,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:55:59,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:55:59,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:55:59,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:55:59,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:55:59,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:55:59,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:55:59,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:55:59,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:55:59,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:55:59,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:55:59,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:55:59,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:55:59,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:55:59,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:55:59,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:55:59,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:55:59,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:55:59,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:55:59,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:55:59,190 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 00:55:59,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:55:59,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:55:59,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:55:59,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:55:59,212 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:55:59,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:55:59,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:55:59,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:55:59,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:55:59,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:55:59,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:55:59,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:55:59,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:55:59,215 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:55:59,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:55:59,216 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:55:59,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:55:59,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:55:59,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:55:59,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:55:59,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:55:59,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:59,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:55:59,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:55:59,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:55:59,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:55:59,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:55:59,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:55:59,218 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 00:55:59,505 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:55:59,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:55:59,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:55:59,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:55:59,525 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:55:59,525 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c [2019-11-07 00:55:59,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a585fb03/dfdd1270ce784ae9a402dada36025a4b/FLAG2250a92b8 [2019-11-07 00:56:00,279 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:56:00,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c [2019-11-07 00:56:00,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a585fb03/dfdd1270ce784ae9a402dada36025a4b/FLAG2250a92b8 [2019-11-07 00:56:00,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a585fb03/dfdd1270ce784ae9a402dada36025a4b [2019-11-07 00:56:00,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:56:00,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:56:00,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:00,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:56:00,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:56:00,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:00" (1/1) ... [2019-11-07 00:56:00,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf27f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:00, skipping insertion in model container [2019-11-07 00:56:00,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:00" (1/1) ... [2019-11-07 00:56:00,538 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:56:00,626 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:56:01,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:01,368 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:56:01,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:01,630 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:56:01,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01 WrapperNode [2019-11-07 00:56:01,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:01,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:56:01,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:56:01,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:56:01,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (1/1) ... [2019-11-07 00:56:01,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:56:01,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:56:01,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:56:01,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:56:01,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (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 00:56:01,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:56:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:56:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:56:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:56:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:56:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:56:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:56:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:56:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:56:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:56:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:56:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:56:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:56:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:56:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:56:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:56:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:56:02,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:56:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:56:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:56:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:56:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:56:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:56:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:56:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:56:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:56:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:56:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:56:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:56:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:56:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:56:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:56:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:56:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:56:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:56:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:56:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:56:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:56:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:56:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:56:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:56:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:56:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:56:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:56:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:56:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:56:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:56:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:56:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:56:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:56:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:56:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:56:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:56:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:56:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:56:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:56:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:56:02,021 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:56:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:56:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:56:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:56:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:56:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:56:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:56:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:56:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:56:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:56:02,024 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:56:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:56:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:56:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:56:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:56:02,025 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:56:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:56:02,026 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:56:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:56:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:56:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:56:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:56:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:56:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:56:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:56:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:56:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:56:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:56:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:56:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:56:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:56:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:56:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:56:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:56:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:56:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:56:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:56:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:56:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:56:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:56:02,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:56:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:56:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:56:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:56:02,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:56:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:56:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:56:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:56:02,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:56:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:56:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:56:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:56:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:56:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:56:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:56:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:56:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:56:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:56:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:56:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:56:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:56:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:56:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:56:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:56:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:56:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:56:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:56:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:56:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:56:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:56:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:56:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:56:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:56:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:56:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:56:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:56:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:56:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:56:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:56:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:56:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:56:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:56:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:56:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:56:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:56:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:56:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:56:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:56:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:56:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:56:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:56:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:56:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:56:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:56:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:56:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:56:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:56:02,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:56:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:56:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:56:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:56:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:56:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:56:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:56:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:56:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:56:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:56:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:56:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:56:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:56:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:56:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:56:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:56:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:56:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:56:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:56:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:56:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:56:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:56:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:56:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:56:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:56:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:56:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:56:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:56:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:56:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:56:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:56:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:56:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:56:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:56:02,077 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:56:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:56:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:56:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:56:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:56:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:56:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:56:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:56:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:56:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:56:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:56:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:56:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:56:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:56:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:56:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:56:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:56:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:56:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:56:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:56:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:56:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:56:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:56:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:56:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:56:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:56:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:56:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:56:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:56:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:56:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:56:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:56:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:56:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:56:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:56:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:56:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:56:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:56:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:56:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:56:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:56:04,709 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:56:04,709 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:56:04,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:04 BoogieIcfgContainer [2019-11-07 00:56:04,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:56:04,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:56:04,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:56:04,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:56:04,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:00" (1/3) ... [2019-11-07 00:56:04,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c6cdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:04, skipping insertion in model container [2019-11-07 00:56:04,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:01" (2/3) ... [2019-11-07 00:56:04,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c6cdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:04, skipping insertion in model container [2019-11-07 00:56:04,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:04" (3/3) ... [2019-11-07 00:56:04,719 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product34.cil.c [2019-11-07 00:56:04,731 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:56:04,744 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:56:04,755 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:56:04,799 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:56:04,800 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:56:04,800 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:56:04,803 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:56:04,803 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:56:04,803 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:56:04,804 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:56:04,804 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:56:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states. [2019-11-07 00:56:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:56:04,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:04,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:04,886 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:04,894 INFO L82 PathProgramCache]: Analyzing trace with hash -794584526, now seen corresponding path program 1 times [2019-11-07 00:56:04,906 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:04,906 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758469547] [2019-11-07 00:56:04,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:05,590 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 00:56:05,590 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758469547] [2019-11-07 00:56:05,591 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:05,591 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:56:05,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846490506] [2019-11-07 00:56:05,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:56:05,600 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:56:05,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:56:05,617 INFO L87 Difference]: Start difference. First operand 655 states. Second operand 2 states. [2019-11-07 00:56:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:05,757 INFO L93 Difference]: Finished difference Result 996 states and 1339 transitions. [2019-11-07 00:56:05,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:56:05,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-11-07 00:56:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:05,801 INFO L225 Difference]: With dead ends: 996 [2019-11-07 00:56:05,801 INFO L226 Difference]: Without dead ends: 626 [2019-11-07 00:56:05,813 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 00:56:05,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-07 00:56:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-07 00:56:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-07 00:56:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 848 transitions. [2019-11-07 00:56:05,960 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 848 transitions. Word has length 167 [2019-11-07 00:56:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:05,963 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 848 transitions. [2019-11-07 00:56:05,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:56:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 848 transitions. [2019-11-07 00:56:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:56:05,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:05,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:05,976 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:05,977 INFO L82 PathProgramCache]: Analyzing trace with hash -54617500, now seen corresponding path program 1 times [2019-11-07 00:56:05,977 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:05,977 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906712715] [2019-11-07 00:56:05,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:06,402 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 00:56:06,403 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906712715] [2019-11-07 00:56:06,403 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:06,403 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:06,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828005862] [2019-11-07 00:56:06,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:06,417 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:06,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:06,419 INFO L87 Difference]: Start difference. First operand 626 states and 848 transitions. Second operand 3 states. [2019-11-07 00:56:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:06,506 INFO L93 Difference]: Finished difference Result 979 states and 1304 transitions. [2019-11-07 00:56:06,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:06,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:56:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:06,516 INFO L225 Difference]: With dead ends: 979 [2019-11-07 00:56:06,516 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:56:06,519 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 00:56:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:56:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-11-07 00:56:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:56:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 850 transitions. [2019-11-07 00:56:06,560 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 850 transitions. Word has length 168 [2019-11-07 00:56:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:06,560 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 850 transitions. [2019-11-07 00:56:06,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 850 transitions. [2019-11-07 00:56:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:56:06,564 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:06,565 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, 1, 1, 1] [2019-11-07 00:56:06,565 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1390838960, now seen corresponding path program 1 times [2019-11-07 00:56:06,565 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:06,566 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119727557] [2019-11-07 00:56:06,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:06,715 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 00:56:06,715 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119727557] [2019-11-07 00:56:06,715 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:06,715 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:06,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227729538] [2019-11-07 00:56:06,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:06,719 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:06,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:06,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:06,720 INFO L87 Difference]: Start difference. First operand 628 states and 850 transitions. Second operand 3 states. [2019-11-07 00:56:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:06,765 INFO L93 Difference]: Finished difference Result 1234 states and 1701 transitions. [2019-11-07 00:56:06,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:06,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-11-07 00:56:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:06,775 INFO L225 Difference]: With dead ends: 1234 [2019-11-07 00:56:06,775 INFO L226 Difference]: Without dead ends: 671 [2019-11-07 00:56:06,778 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 00:56:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-11-07 00:56:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 670. [2019-11-07 00:56:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-11-07 00:56:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 922 transitions. [2019-11-07 00:56:06,809 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 922 transitions. Word has length 174 [2019-11-07 00:56:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:06,811 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 922 transitions. [2019-11-07 00:56:06,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 922 transitions. [2019-11-07 00:56:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:56:06,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:06,819 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, 1, 1, 1, 1] [2019-11-07 00:56:06,820 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash -557359296, now seen corresponding path program 1 times [2019-11-07 00:56:06,821 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:06,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636208305] [2019-11-07 00:56:06,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:07,135 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 00:56:07,136 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636208305] [2019-11-07 00:56:07,136 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:07,136 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:07,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467228538] [2019-11-07 00:56:07,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:07,137 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:07,138 INFO L87 Difference]: Start difference. First operand 670 states and 922 transitions. Second operand 3 states. [2019-11-07 00:56:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:07,188 INFO L93 Difference]: Finished difference Result 1148 states and 1566 transitions. [2019-11-07 00:56:07,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:07,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-11-07 00:56:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:07,195 INFO L225 Difference]: With dead ends: 1148 [2019-11-07 00:56:07,195 INFO L226 Difference]: Without dead ends: 811 [2019-11-07 00:56:07,197 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 00:56:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2019-11-07 00:56:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 810. [2019-11-07 00:56:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-11-07 00:56:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1119 transitions. [2019-11-07 00:56:07,236 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1119 transitions. Word has length 175 [2019-11-07 00:56:07,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:07,237 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1119 transitions. [2019-11-07 00:56:07,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1119 transitions. [2019-11-07 00:56:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-11-07 00:56:07,244 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:07,244 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:07,244 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:07,245 INFO L82 PathProgramCache]: Analyzing trace with hash -203609441, now seen corresponding path program 1 times [2019-11-07 00:56:07,245 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:07,245 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010964854] [2019-11-07 00:56:07,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:56:07,575 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010964854] [2019-11-07 00:56:07,575 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:07,575 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:56:07,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287927408] [2019-11-07 00:56:07,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:56:07,577 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:07,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:56:07,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:56:07,578 INFO L87 Difference]: Start difference. First operand 810 states and 1119 transitions. Second operand 6 states. [2019-11-07 00:56:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:08,454 INFO L93 Difference]: Finished difference Result 2010 states and 2769 transitions. [2019-11-07 00:56:08,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:56:08,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 320 [2019-11-07 00:56:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:08,466 INFO L225 Difference]: With dead ends: 2010 [2019-11-07 00:56:08,466 INFO L226 Difference]: Without dead ends: 1571 [2019-11-07 00:56:08,469 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 00:56:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2019-11-07 00:56:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1560. [2019-11-07 00:56:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2019-11-07 00:56:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2174 transitions. [2019-11-07 00:56:08,558 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2174 transitions. Word has length 320 [2019-11-07 00:56:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:08,560 INFO L462 AbstractCegarLoop]: Abstraction has 1560 states and 2174 transitions. [2019-11-07 00:56:08,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:56:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2174 transitions. [2019-11-07 00:56:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-11-07 00:56:08,569 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:08,570 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:08,570 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:08,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:08,571 INFO L82 PathProgramCache]: Analyzing trace with hash 72654355, now seen corresponding path program 1 times [2019-11-07 00:56:08,571 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:08,571 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302882820] [2019-11-07 00:56:08,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:56:09,064 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302882820] [2019-11-07 00:56:09,064 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:09,065 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:56:09,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524279976] [2019-11-07 00:56:09,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:56:09,066 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:56:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:56:09,066 INFO L87 Difference]: Start difference. First operand 1560 states and 2174 transitions. Second operand 11 states. [2019-11-07 00:56:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:09,605 INFO L93 Difference]: Finished difference Result 2435 states and 3327 transitions. [2019-11-07 00:56:09,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:56:09,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 321 [2019-11-07 00:56:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:09,622 INFO L225 Difference]: With dead ends: 2435 [2019-11-07 00:56:09,622 INFO L226 Difference]: Without dead ends: 1534 [2019-11-07 00:56:09,629 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:56:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2019-11-07 00:56:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1530. [2019-11-07 00:56:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-11-07 00:56:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2123 transitions. [2019-11-07 00:56:09,746 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2123 transitions. Word has length 321 [2019-11-07 00:56:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:09,750 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2123 transitions. [2019-11-07 00:56:09,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:56:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2123 transitions. [2019-11-07 00:56:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-11-07 00:56:09,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:09,761 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:09,762 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:09,762 INFO L82 PathProgramCache]: Analyzing trace with hash 299496427, now seen corresponding path program 1 times [2019-11-07 00:56:09,762 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:09,762 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376005492] [2019-11-07 00:56:09,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:56:10,412 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376005492] [2019-11-07 00:56:10,412 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557284643] [2019-11-07 00:56:10,412 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 00:56:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:11,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:11,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:56:11,816 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:12,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:12,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:13,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:56:13,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:13,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:56:13,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787628442] [2019-11-07 00:56:13,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:56:13,247 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:13,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:56:13,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:13,248 INFO L87 Difference]: Start difference. First operand 1530 states and 2123 transitions. Second operand 9 states. [2019-11-07 00:56:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:16,403 INFO L93 Difference]: Finished difference Result 3038 states and 4226 transitions. [2019-11-07 00:56:16,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:56:16,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-11-07 00:56:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:16,426 INFO L225 Difference]: With dead ends: 3038 [2019-11-07 00:56:16,427 INFO L226 Difference]: Without dead ends: 1544 [2019-11-07 00:56:16,435 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:56:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2019-11-07 00:56:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2019-11-07 00:56:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-11-07 00:56:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2141 transitions. [2019-11-07 00:56:16,566 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2141 transitions. Word has length 329 [2019-11-07 00:56:16,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:16,566 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2141 transitions. [2019-11-07 00:56:16,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:56:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2141 transitions. [2019-11-07 00:56:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-11-07 00:56:16,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:16,576 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:16,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:16,785 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:16,785 INFO L82 PathProgramCache]: Analyzing trace with hash -213296622, now seen corresponding path program 1 times [2019-11-07 00:56:16,786 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:16,786 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512773184] [2019-11-07 00:56:16,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:56:17,389 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512773184] [2019-11-07 00:56:17,389 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802466868] [2019-11-07 00:56:17,389 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 00:56:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:18,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:18,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:56:18,495 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:19,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:19,495 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:56:19,584 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:19,584 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:56:19,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408596443] [2019-11-07 00:56:19,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:56:19,585 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:19,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:56:19,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:19,586 INFO L87 Difference]: Start difference. First operand 1544 states and 2141 transitions. Second operand 7 states. [2019-11-07 00:56:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:21,116 INFO L93 Difference]: Finished difference Result 3041 states and 4235 transitions. [2019-11-07 00:56:21,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:56:21,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-11-07 00:56:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:21,127 INFO L225 Difference]: With dead ends: 3041 [2019-11-07 00:56:21,127 INFO L226 Difference]: Without dead ends: 1548 [2019-11-07 00:56:21,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 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 00:56:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-11-07 00:56:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2019-11-07 00:56:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-11-07 00:56:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2146 transitions. [2019-11-07 00:56:21,198 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2146 transitions. Word has length 330 [2019-11-07 00:56:21,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:21,199 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2146 transitions. [2019-11-07 00:56:21,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:56:21,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2146 transitions. [2019-11-07 00:56:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-11-07 00:56:21,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:21,207 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:21,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:21,424 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1626429251, now seen corresponding path program 1 times [2019-11-07 00:56:21,425 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:21,425 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645945402] [2019-11-07 00:56:21,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:56:22,047 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645945402] [2019-11-07 00:56:22,047 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808493627] [2019-11-07 00:56:22,047 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 00:56:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:23,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:23,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-11-07 00:56:23,379 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:24,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:24,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:24,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:56:24,734 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:24,734 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:56:24,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620151751] [2019-11-07 00:56:24,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:56:24,736 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:24,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:56:24,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:56:24,737 INFO L87 Difference]: Start difference. First operand 1548 states and 2146 transitions. Second operand 16 states. [2019-11-07 00:56:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:27,671 INFO L93 Difference]: Finished difference Result 3047 states and 4234 transitions. [2019-11-07 00:56:27,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:27,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-11-07 00:56:27,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:27,682 INFO L225 Difference]: With dead ends: 3047 [2019-11-07 00:56:27,682 INFO L226 Difference]: Without dead ends: 1560 [2019-11-07 00:56:27,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:56:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-11-07 00:56:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-11-07 00:56:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-11-07 00:56:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2157 transitions. [2019-11-07 00:56:27,753 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2157 transitions. Word has length 331 [2019-11-07 00:56:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:27,753 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2157 transitions. [2019-11-07 00:56:27,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:56:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2157 transitions. [2019-11-07 00:56:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-11-07 00:56:27,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:27,761 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:27,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:27,974 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:27,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1588193256, now seen corresponding path program 2 times [2019-11-07 00:56:27,975 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:27,975 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398164848] [2019-11-07 00:56:27,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-07 00:56:28,719 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398164848] [2019-11-07 00:56:28,720 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533205474] [2019-11-07 00:56:28,720 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 00:56:29,683 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:56:29,683 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:29,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:29,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-11-07 00:56:30,071 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:31,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:31,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-07 00:56:31,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:31,417 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:56:31,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315157366] [2019-11-07 00:56:31,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:56:31,419 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:31,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:56:31,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:56:31,420 INFO L87 Difference]: Start difference. First operand 1558 states and 2157 transitions. Second operand 12 states.