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_spec27_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:41,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:41,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:41,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:41,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:41,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:41,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:41,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:41,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:41,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:41,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:41,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:41,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:41,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:41,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:41,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:41,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:41,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:41,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:41,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:41,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:41,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:41,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:41,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:41,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:41,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:41,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:41,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:41,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:41,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:41,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:41,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:41,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:41,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:41,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:41,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:41,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:41,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:41,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:41,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:41,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:41,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:41,195 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:41,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:41,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:41,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:41,197 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:41,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:41,197 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:41,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:41,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:41,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:41,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:41,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:41,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:41,200 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:41,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:41,200 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:41,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:41,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:41,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:41,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:41,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:41,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:41,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:41,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:41,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:41,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:41,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:41,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:41,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:41,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:41,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:41,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:41,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:41,495 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:41,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2019-10-13 21:14:41,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844b2d389/7ccd1ae5329f493691e6e48e0be0a4df/FLAG2e57ea32a [2019-10-13 21:14:42,155 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:42,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2019-10-13 21:14:42,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844b2d389/7ccd1ae5329f493691e6e48e0be0a4df/FLAG2e57ea32a [2019-10-13 21:14:42,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844b2d389/7ccd1ae5329f493691e6e48e0be0a4df [2019-10-13 21:14:42,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:42,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:42,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:42,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:42,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:42,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:42" (1/1) ... [2019-10-13 21:14:42,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf1d954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:42, skipping insertion in model container [2019-10-13 21:14:42,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:42" (1/1) ... [2019-10-13 21:14:42,477 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:42,551 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:43,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:43,330 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:43,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:43,608 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:43,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43 WrapperNode [2019-10-13 21:14:43,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:43,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:43,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:43,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:43,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:43,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:43,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:43,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:43,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:14:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:14:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:14:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:14:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:14:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:46,294 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:46,295 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:46,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:46 BoogieIcfgContainer [2019-10-13 21:14:46,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:46,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:46,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:46,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:46,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:42" (1/3) ... [2019-10-13 21:14:46,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7064b743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:46, skipping insertion in model container [2019-10-13 21:14:46,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (2/3) ... [2019-10-13 21:14:46,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7064b743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:46, skipping insertion in model container [2019-10-13 21:14:46,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:46" (3/3) ... [2019-10-13 21:14:46,306 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.c [2019-10-13 21:14:46,318 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:46,329 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:46,341 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:46,372 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:46,372 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:46,372 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:46,372 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:46,372 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:46,373 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:46,373 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:46,373 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-13 21:14:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:14:46,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:46,432 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:46,434 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1817645931, now seen corresponding path program 1 times [2019-10-13 21:14:46,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:46,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019516239] [2019-10-13 21:14:46,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:46,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:46,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:47,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019516239] [2019-10-13 21:14:47,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:47,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716396124] [2019-10-13 21:14:47,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:47,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:47,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:47,118 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 2 states. [2019-10-13 21:14:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,190 INFO L93 Difference]: Finished difference Result 747 states and 1021 transitions. [2019-10-13 21:14:47,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:47,192 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 186 [2019-10-13 21:14:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,214 INFO L225 Difference]: With dead ends: 747 [2019-10-13 21:14:47,214 INFO L226 Difference]: Without dead ends: 496 [2019-10-13 21:14:47,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:47,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-10-13 21:14:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2019-10-13 21:14:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2019-10-13 21:14:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 681 transitions. [2019-10-13 21:14:47,332 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 681 transitions. Word has length 186 [2019-10-13 21:14:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,336 INFO L462 AbstractCegarLoop]: Abstraction has 496 states and 681 transitions. [2019-10-13 21:14:47,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 681 transitions. [2019-10-13 21:14:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:14:47,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,347 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,347 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1884483805, now seen corresponding path program 1 times [2019-10-13 21:14:47,348 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373373817] [2019-10-13 21:14:47,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:47,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373373817] [2019-10-13 21:14:47,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:47,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081998157] [2019-10-13 21:14:47,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:47,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:47,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,621 INFO L87 Difference]: Start difference. First operand 496 states and 681 transitions. Second operand 3 states. [2019-10-13 21:14:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,688 INFO L93 Difference]: Finished difference Result 730 states and 984 transitions. [2019-10-13 21:14:47,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:47,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-13 21:14:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,700 INFO L225 Difference]: With dead ends: 730 [2019-10-13 21:14:47,700 INFO L226 Difference]: Without dead ends: 499 [2019-10-13 21:14:47,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-10-13 21:14:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2019-10-13 21:14:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-13 21:14:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 683 transitions. [2019-10-13 21:14:47,768 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 683 transitions. Word has length 187 [2019-10-13 21:14:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,769 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 683 transitions. [2019-10-13 21:14:47,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 683 transitions. [2019-10-13 21:14:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 21:14:47,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,817 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,817 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1131294487, now seen corresponding path program 1 times [2019-10-13 21:14:47,818 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195174992] [2019-10-13 21:14:47,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:48,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195174992] [2019-10-13 21:14:48,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:48,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991534017] [2019-10-13 21:14:48,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:48,055 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:48,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,056 INFO L87 Difference]: Start difference. First operand 498 states and 683 transitions. Second operand 3 states. [2019-10-13 21:14:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:48,113 INFO L93 Difference]: Finished difference Result 972 states and 1364 transitions. [2019-10-13 21:14:48,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:48,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-13 21:14:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,119 INFO L225 Difference]: With dead ends: 972 [2019-10-13 21:14:48,119 INFO L226 Difference]: Without dead ends: 539 [2019-10-13 21:14:48,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-13 21:14:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2019-10-13 21:14:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-13 21:14:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 752 transitions. [2019-10-13 21:14:48,153 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 752 transitions. Word has length 193 [2019-10-13 21:14:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,154 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 752 transitions. [2019-10-13 21:14:48,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 752 transitions. [2019-10-13 21:14:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:14:48,159 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,159 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,159 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,160 INFO L82 PathProgramCache]: Analyzing trace with hash 956987201, now seen corresponding path program 1 times [2019-10-13 21:14:48,160 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888883607] [2019-10-13 21:14:48,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:48,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888883607] [2019-10-13 21:14:48,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:48,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127095142] [2019-10-13 21:14:48,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:48,450 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:48,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:48,451 INFO L87 Difference]: Start difference. First operand 538 states and 752 transitions. Second operand 8 states. [2019-10-13 21:14:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:48,628 INFO L93 Difference]: Finished difference Result 756 states and 1043 transitions. [2019-10-13 21:14:48,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:48,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2019-10-13 21:14:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,636 INFO L225 Difference]: With dead ends: 756 [2019-10-13 21:14:48,636 INFO L226 Difference]: Without dead ends: 538 [2019-10-13 21:14:48,638 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-13 21:14:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2019-10-13 21:14:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-13 21:14:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 751 transitions. [2019-10-13 21:14:48,665 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 751 transitions. Word has length 194 [2019-10-13 21:14:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,667 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 751 transitions. [2019-10-13 21:14:48,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 751 transitions. [2019-10-13 21:14:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:14:48,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,674 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,674 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1401373072, now seen corresponding path program 1 times [2019-10-13 21:14:48,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768890163] [2019-10-13 21:14:48,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:48,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768890163] [2019-10-13 21:14:48,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:48,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903514297] [2019-10-13 21:14:48,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:48,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:48,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:48,954 INFO L87 Difference]: Start difference. First operand 538 states and 751 transitions. Second operand 7 states. [2019-10-13 21:14:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:51,806 INFO L93 Difference]: Finished difference Result 1003 states and 1370 transitions. [2019-10-13 21:14:51,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:51,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2019-10-13 21:14:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:51,812 INFO L225 Difference]: With dead ends: 1003 [2019-10-13 21:14:51,812 INFO L226 Difference]: Without dead ends: 781 [2019-10-13 21:14:51,814 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2019-10-13 21:14:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 772. [2019-10-13 21:14:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2019-10-13 21:14:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1061 transitions. [2019-10-13 21:14:51,855 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1061 transitions. Word has length 201 [2019-10-13 21:14:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:51,855 INFO L462 AbstractCegarLoop]: Abstraction has 772 states and 1061 transitions. [2019-10-13 21:14:51,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1061 transitions. [2019-10-13 21:14:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:14:51,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:51,860 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:51,860 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:51,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1299605141, now seen corresponding path program 1 times [2019-10-13 21:14:51,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:51,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594026079] [2019-10-13 21:14:51,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:52,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594026079] [2019-10-13 21:14:52,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:52,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:14:52,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129702073] [2019-10-13 21:14:52,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:14:52,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:14:52,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:14:52,307 INFO L87 Difference]: Start difference. First operand 772 states and 1061 transitions. Second operand 24 states. [2019-10-13 21:14:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:53,047 INFO L93 Difference]: Finished difference Result 1339 states and 1830 transitions. [2019-10-13 21:14:53,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 21:14:53,047 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 202 [2019-10-13 21:14:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:53,054 INFO L225 Difference]: With dead ends: 1339 [2019-10-13 21:14:53,055 INFO L226 Difference]: Without dead ends: 879 [2019-10-13 21:14:53,057 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:14:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2019-10-13 21:14:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 874. [2019-10-13 21:14:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-13 21:14:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1190 transitions. [2019-10-13 21:14:53,099 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1190 transitions. Word has length 202 [2019-10-13 21:14:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:53,100 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1190 transitions. [2019-10-13 21:14:53,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:14:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1190 transitions. [2019-10-13 21:14:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:14:53,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:53,105 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:14:53,106 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:53,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1826249361, now seen corresponding path program 1 times [2019-10-13 21:14:53,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:53,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796296061] [2019-10-13 21:14:53,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:53,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:53,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:53,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796296061] [2019-10-13 21:14:53,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:53,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:53,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237501619] [2019-10-13 21:14:53,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:53,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:53,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:53,328 INFO L87 Difference]: Start difference. First operand 874 states and 1190 transitions. Second operand 8 states. [2019-10-13 21:14:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:57,746 INFO L93 Difference]: Finished difference Result 2574 states and 3521 transitions. [2019-10-13 21:14:57,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:14:57,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2019-10-13 21:14:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:57,765 INFO L225 Difference]: With dead ends: 2574 [2019-10-13 21:14:57,765 INFO L226 Difference]: Without dead ends: 2036 [2019-10-13 21:14:57,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:14:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2019-10-13 21:14:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2024. [2019-10-13 21:14:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2019-10-13 21:14:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2758 transitions. [2019-10-13 21:14:57,922 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2758 transitions. Word has length 233 [2019-10-13 21:14:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:57,926 INFO L462 AbstractCegarLoop]: Abstraction has 2024 states and 2758 transitions. [2019-10-13 21:14:57,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2758 transitions. [2019-10-13 21:14:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:14:57,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:57,934 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:14:57,934 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1547017909, now seen corresponding path program 1 times [2019-10-13 21:14:57,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:57,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707399603] [2019-10-13 21:14:57,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:57,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:58,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707399603] [2019-10-13 21:14:58,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:58,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-13 21:14:58,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475535368] [2019-10-13 21:14:58,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 21:14:58,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:58,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 21:14:58,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:14:58,461 INFO L87 Difference]: Start difference. First operand 2024 states and 2758 transitions. Second operand 20 states. [2019-10-13 21:14:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:59,024 INFO L93 Difference]: Finished difference Result 3396 states and 4594 transitions. [2019-10-13 21:14:59,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:14:59,024 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 234 [2019-10-13 21:14:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:59,036 INFO L225 Difference]: With dead ends: 3396 [2019-10-13 21:14:59,036 INFO L226 Difference]: Without dead ends: 1752 [2019-10-13 21:14:59,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:14:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2019-10-13 21:14:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1742. [2019-10-13 21:14:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2019-10-13 21:14:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2369 transitions. [2019-10-13 21:14:59,135 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2369 transitions. Word has length 234 [2019-10-13 21:14:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:59,136 INFO L462 AbstractCegarLoop]: Abstraction has 1742 states and 2369 transitions. [2019-10-13 21:14:59,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 21:14:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2369 transitions. [2019-10-13 21:14:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-13 21:14:59,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:59,142 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:59,143 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:59,143 INFO L82 PathProgramCache]: Analyzing trace with hash -558509607, now seen corresponding path program 1 times [2019-10-13 21:14:59,143 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:59,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742281050] [2019-10-13 21:14:59,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:14:59,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742281050] [2019-10-13 21:14:59,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140658207] [2019-10-13 21:14:59,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:00,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:00,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:00,277 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:00,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:00,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:00,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:01,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:01,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:01,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126378423] [2019-10-13 21:15:01,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:01,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:01,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:01,010 INFO L87 Difference]: Start difference. First operand 1742 states and 2369 transitions. Second operand 9 states. [2019-10-13 21:15:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,744 INFO L93 Difference]: Finished difference Result 3462 states and 4718 transitions. [2019-10-13 21:15:02,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:02,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2019-10-13 21:15:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,760 INFO L225 Difference]: With dead ends: 3462 [2019-10-13 21:15:02,761 INFO L226 Difference]: Without dead ends: 1756 [2019-10-13 21:15:02,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 472 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2019-10-13 21:15:02,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1756. [2019-10-13 21:15:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1756 states. [2019-10-13 21:15:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2387 transitions. [2019-10-13 21:15:02,889 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2387 transitions. Word has length 243 [2019-10-13 21:15:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,889 INFO L462 AbstractCegarLoop]: Abstraction has 1756 states and 2387 transitions. [2019-10-13 21:15:02,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2387 transitions. [2019-10-13 21:15:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 21:15:02,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,898 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:03,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:03,109 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2032767429, now seen corresponding path program 1 times [2019-10-13 21:15:03,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:03,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533984996] [2019-10-13 21:15:03,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:03,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533984996] [2019-10-13 21:15:03,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241738248] [2019-10-13 21:15:03,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:04,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:04,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:04,444 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:04,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:04,903 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:04,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:04,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444312367] [2019-10-13 21:15:04,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:04,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:04,906 INFO L87 Difference]: Start difference. First operand 1756 states and 2387 transitions. Second operand 7 states. [2019-10-13 21:15:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:05,980 INFO L93 Difference]: Finished difference Result 3463 states and 4722 transitions. [2019-10-13 21:15:05,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:05,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2019-10-13 21:15:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:05,992 INFO L225 Difference]: With dead ends: 3463 [2019-10-13 21:15:05,992 INFO L226 Difference]: Without dead ends: 1758 [2019-10-13 21:15:05,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 479 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2019-10-13 21:15:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1758. [2019-10-13 21:15:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1758 states. [2019-10-13 21:15:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2390 transitions. [2019-10-13 21:15:06,075 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2390 transitions. Word has length 244 [2019-10-13 21:15:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:06,076 INFO L462 AbstractCegarLoop]: Abstraction has 1758 states and 2390 transitions. [2019-10-13 21:15:06,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2390 transitions. [2019-10-13 21:15:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:15:06,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:06,082 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:06,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:06,288 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:06,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:06,289 INFO L82 PathProgramCache]: Analyzing trace with hash -610180837, now seen corresponding path program 1 times [2019-10-13 21:15:06,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:06,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104583204] [2019-10-13 21:15:06,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,291 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:06,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104583204] [2019-10-13 21:15:06,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881852501] [2019-10-13 21:15:06,544 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 [2019-10-13 21:15:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:07,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:07,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:07,601 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:07,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:08,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:08,187 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:08,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:08,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639850194] [2019-10-13 21:15:08,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:08,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:08,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:08,190 INFO L87 Difference]: Start difference. First operand 1758 states and 2390 transitions. Second operand 16 states. [2019-10-13 21:15:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:09,872 INFO L93 Difference]: Finished difference Result 3467 states and 4722 transitions. [2019-10-13 21:15:09,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:09,873 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 245 [2019-10-13 21:15:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:09,885 INFO L225 Difference]: With dead ends: 3467 [2019-10-13 21:15:09,885 INFO L226 Difference]: Without dead ends: 1770 [2019-10-13 21:15:09,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 476 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2019-10-13 21:15:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1768. [2019-10-13 21:15:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2019-10-13 21:15:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2401 transitions. [2019-10-13 21:15:09,979 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2401 transitions. Word has length 245 [2019-10-13 21:15:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:09,979 INFO L462 AbstractCegarLoop]: Abstraction has 1768 states and 2401 transitions. [2019-10-13 21:15:09,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2401 transitions. [2019-10-13 21:15:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 21:15:09,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:09,987 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:10,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:10,196 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash 869844959, now seen corresponding path program 2 times [2019-10-13 21:15:10,197 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:10,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827952999] [2019-10-13 21:15:10,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:10,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:10,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:10,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827952999] [2019-10-13 21:15:10,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449368308] [2019-10-13 21:15:10,904 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 [2019-10-13 21:15:11,492 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:11,492 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:11,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:11,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:11,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:12,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:12,372 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:12,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:12,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378371510] [2019-10-13 21:15:12,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:12,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:12,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:12,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:12,379 INFO L87 Difference]: Start difference. First operand 1768 states and 2401 transitions. Second operand 12 states.