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_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:05,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:05,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:05,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:05,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:05,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:05,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:05,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:05,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:05,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:05,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:05,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:05,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:05,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:05,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:05,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:05,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:05,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:05,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:05,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:05,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:05,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:05,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:05,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:05,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:05,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:05,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:05,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:05,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:05,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:05,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:05,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:05,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:05,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:05,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:05,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:05,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:05,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:05,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:05,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:05,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:05,508 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 21:14:05,532 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:05,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:05,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:05,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:05,536 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:05,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:05,536 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:05,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:05,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:05,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:05,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:05,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:05,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:05,539 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:05,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:05,539 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:05,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:05,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:05,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:05,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:05,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:05,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:05,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:05,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:05,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:05,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:05,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:05,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:05,546 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 21:14:05,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:05,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:05,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:05,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:05,862 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:05,863 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2019-10-13 21:14:05,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7c0af17/ed032e72b66e410f91bc650c3ba635e3/FLAG31814e9bc [2019-10-13 21:14:06,618 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:06,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product22.cil.c [2019-10-13 21:14:06,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7c0af17/ed032e72b66e410f91bc650c3ba635e3/FLAG31814e9bc [2019-10-13 21:14:06,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7c0af17/ed032e72b66e410f91bc650c3ba635e3 [2019-10-13 21:14:06,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:06,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:06,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:06,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:06,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:06,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:06" (1/1) ... [2019-10-13 21:14:06,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3044d039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:06, skipping insertion in model container [2019-10-13 21:14:06,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:06" (1/1) ... [2019-10-13 21:14:06,847 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:06,925 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:07,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:07,680 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:07,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:07,900 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:07,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07 WrapperNode [2019-10-13 21:14:07,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:07,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:07,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:07,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:07,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:07,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:07,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:07,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:08,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:08,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:08,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (1/1) ... [2019-10-13 21:14:08,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:08,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:08,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:08,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:08,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (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 21:14:08,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:08,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:08,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:08,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:08,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:08,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:14:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:08,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:08,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:08,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:08,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:08,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:08,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:08,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:08,156 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:08,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:08,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:08,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:08,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:14:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:14:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:14:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:14:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:08,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:08,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:08,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:08,177 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:08,178 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:14:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:14:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:10,323 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:10,323 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:10,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:10 BoogieIcfgContainer [2019-10-13 21:14:10,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:10,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:10,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:10,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:10,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:06" (1/3) ... [2019-10-13 21:14:10,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5749c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:10, skipping insertion in model container [2019-10-13 21:14:10,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:07" (2/3) ... [2019-10-13 21:14:10,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5749c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:10, skipping insertion in model container [2019-10-13 21:14:10,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:10" (3/3) ... [2019-10-13 21:14:10,337 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product22.cil.c [2019-10-13 21:14:10,349 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:10,365 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:10,377 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:10,419 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:10,420 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:10,420 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:10,420 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:10,420 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:10,420 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:10,420 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:10,421 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states. [2019-10-13 21:14:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:14:10,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:10,487 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] [2019-10-13 21:14:10,490 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:10,496 INFO L82 PathProgramCache]: Analyzing trace with hash -262488185, now seen corresponding path program 1 times [2019-10-13 21:14:10,506 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:10,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820304744] [2019-10-13 21:14:10,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:11,216 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 21:14:11,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820304744] [2019-10-13 21:14:11,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:11,218 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:11,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905331430] [2019-10-13 21:14:11,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:11,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:11,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:11,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:11,242 INFO L87 Difference]: Start difference. First operand 508 states. Second operand 2 states. [2019-10-13 21:14:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:11,317 INFO L93 Difference]: Finished difference Result 747 states and 983 transitions. [2019-10-13 21:14:11,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:11,319 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:14:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:11,344 INFO L225 Difference]: With dead ends: 747 [2019-10-13 21:14:11,345 INFO L226 Difference]: Without dead ends: 485 [2019-10-13 21:14:11,354 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 21:14:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-10-13 21:14:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2019-10-13 21:14:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-13 21:14:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 643 transitions. [2019-10-13 21:14:11,510 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 643 transitions. Word has length 145 [2019-10-13 21:14:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:11,513 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 643 transitions. [2019-10-13 21:14:11,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 643 transitions. [2019-10-13 21:14:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:14:11,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:11,519 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] [2019-10-13 21:14:11,520 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:11,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1163189320, now seen corresponding path program 1 times [2019-10-13 21:14:11,520 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:11,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32255278] [2019-10-13 21:14:11,521 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,521 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:11,790 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 21:14:11,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32255278] [2019-10-13 21:14:11,791 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:11,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:11,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338471292] [2019-10-13 21:14:11,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:11,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:11,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:11,794 INFO L87 Difference]: Start difference. First operand 485 states and 643 transitions. Second operand 3 states. [2019-10-13 21:14:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:11,854 INFO L93 Difference]: Finished difference Result 730 states and 952 transitions. [2019-10-13 21:14:11,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:11,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:14:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:11,861 INFO L225 Difference]: With dead ends: 730 [2019-10-13 21:14:11,861 INFO L226 Difference]: Without dead ends: 488 [2019-10-13 21:14:11,864 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 21:14:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2019-10-13 21:14:11,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2019-10-13 21:14:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2019-10-13 21:14:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 645 transitions. [2019-10-13 21:14:11,899 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 645 transitions. Word has length 146 [2019-10-13 21:14:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:11,900 INFO L462 AbstractCegarLoop]: Abstraction has 487 states and 645 transitions. [2019-10-13 21:14:11,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 645 transitions. [2019-10-13 21:14:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:14:11,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:11,904 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] [2019-10-13 21:14:11,904 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:11,905 INFO L82 PathProgramCache]: Analyzing trace with hash -180533913, now seen corresponding path program 1 times [2019-10-13 21:14:11,905 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:11,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634701624] [2019-10-13 21:14:11,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,906 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:11,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:12,086 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 21:14:12,086 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634701624] [2019-10-13 21:14:12,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:12,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:12,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727814886] [2019-10-13 21:14:12,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:12,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:12,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:12,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:12,093 INFO L87 Difference]: Start difference. First operand 487 states and 645 transitions. Second operand 3 states. [2019-10-13 21:14:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:12,167 INFO L93 Difference]: Finished difference Result 952 states and 1291 transitions. [2019-10-13 21:14:12,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:12,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:14:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:12,180 INFO L225 Difference]: With dead ends: 952 [2019-10-13 21:14:12,180 INFO L226 Difference]: Without dead ends: 530 [2019-10-13 21:14:12,183 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 21:14:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2019-10-13 21:14:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 529. [2019-10-13 21:14:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2019-10-13 21:14:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 717 transitions. [2019-10-13 21:14:12,240 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 717 transitions. Word has length 158 [2019-10-13 21:14:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:12,241 INFO L462 AbstractCegarLoop]: Abstraction has 529 states and 717 transitions. [2019-10-13 21:14:12,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 717 transitions. [2019-10-13 21:14:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:14:12,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:12,253 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] [2019-10-13 21:14:12,254 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:12,254 INFO L82 PathProgramCache]: Analyzing trace with hash 541479896, now seen corresponding path program 1 times [2019-10-13 21:14:12,255 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:12,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055040723] [2019-10-13 21:14:12,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:12,470 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 21:14:12,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055040723] [2019-10-13 21:14:12,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:12,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:12,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506297395] [2019-10-13 21:14:12,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:12,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:12,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:12,474 INFO L87 Difference]: Start difference. First operand 529 states and 717 transitions. Second operand 3 states. [2019-10-13 21:14:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:12,521 INFO L93 Difference]: Finished difference Result 1075 states and 1502 transitions. [2019-10-13 21:14:12,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:12,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:14:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:12,529 INFO L225 Difference]: With dead ends: 1075 [2019-10-13 21:14:12,529 INFO L226 Difference]: Without dead ends: 611 [2019-10-13 21:14:12,531 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 21:14:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-13 21:14:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 610. [2019-10-13 21:14:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-10-13 21:14:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 855 transitions. [2019-10-13 21:14:12,566 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 855 transitions. Word has length 159 [2019-10-13 21:14:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:12,568 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 855 transitions. [2019-10-13 21:14:12,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 855 transitions. [2019-10-13 21:14:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:14:12,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:12,574 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] [2019-10-13 21:14:12,574 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1088431641, now seen corresponding path program 1 times [2019-10-13 21:14:12,575 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:12,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804788886] [2019-10-13 21:14:12,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:12,731 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 21:14:12,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804788886] [2019-10-13 21:14:12,732 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:12,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:12,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623943894] [2019-10-13 21:14:12,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:12,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:12,735 INFO L87 Difference]: Start difference. First operand 610 states and 855 transitions. Second operand 3 states. [2019-10-13 21:14:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:12,818 INFO L93 Difference]: Finished difference Result 1312 states and 1906 transitions. [2019-10-13 21:14:12,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:12,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-13 21:14:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:12,824 INFO L225 Difference]: With dead ends: 1312 [2019-10-13 21:14:12,824 INFO L226 Difference]: Without dead ends: 767 [2019-10-13 21:14:12,827 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 21:14:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2019-10-13 21:14:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 766. [2019-10-13 21:14:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2019-10-13 21:14:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1119 transitions. [2019-10-13 21:14:12,862 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1119 transitions. Word has length 160 [2019-10-13 21:14:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:12,862 INFO L462 AbstractCegarLoop]: Abstraction has 766 states and 1119 transitions. [2019-10-13 21:14:12,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1119 transitions. [2019-10-13 21:14:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:14:12,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:12,867 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] [2019-10-13 21:14:12,868 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:12,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1690260276, now seen corresponding path program 1 times [2019-10-13 21:14:12,868 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:12,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50446819] [2019-10-13 21:14:12,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:14:13,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50446819] [2019-10-13 21:14:13,889 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:13,889 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-10-13 21:14:13,889 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643603431] [2019-10-13 21:14:13,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:14:13,890 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:13,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:14:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:14:13,891 INFO L87 Difference]: Start difference. First operand 766 states and 1119 transitions. Second operand 35 states. [2019-10-13 21:14:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:19,746 INFO L93 Difference]: Finished difference Result 2240 states and 3350 transitions. [2019-10-13 21:14:19,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-13 21:14:19,747 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 162 [2019-10-13 21:14:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:19,759 INFO L225 Difference]: With dead ends: 2240 [2019-10-13 21:14:19,759 INFO L226 Difference]: Without dead ends: 1506 [2019-10-13 21:14:19,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2019-10-13 21:14:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2019-10-13 21:14:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1239. [2019-10-13 21:14:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2019-10-13 21:14:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1916 transitions. [2019-10-13 21:14:19,844 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1916 transitions. Word has length 162 [2019-10-13 21:14:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:19,844 INFO L462 AbstractCegarLoop]: Abstraction has 1239 states and 1916 transitions. [2019-10-13 21:14:19,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:14:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1916 transitions. [2019-10-13 21:14:19,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:14:19,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:19,853 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:19,853 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:19,853 INFO L82 PathProgramCache]: Analyzing trace with hash 490161090, now seen corresponding path program 1 times [2019-10-13 21:14:19,854 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:19,854 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313140624] [2019-10-13 21:14:19,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:19,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:19,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:20,026 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 21:14:20,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313140624] [2019-10-13 21:14:20,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:20,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:20,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672168754] [2019-10-13 21:14:20,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:20,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:20,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:20,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:20,031 INFO L87 Difference]: Start difference. First operand 1239 states and 1916 transitions. Second operand 3 states. [2019-10-13 21:14:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:20,133 INFO L93 Difference]: Finished difference Result 3000 states and 4794 transitions. [2019-10-13 21:14:20,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:20,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:14:20,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:20,153 INFO L225 Difference]: With dead ends: 3000 [2019-10-13 21:14:20,154 INFO L226 Difference]: Without dead ends: 1840 [2019-10-13 21:14:20,160 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 21:14:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2019-10-13 21:14:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1839. [2019-10-13 21:14:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2019-10-13 21:14:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2952 transitions. [2019-10-13 21:14:20,306 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2952 transitions. Word has length 162 [2019-10-13 21:14:20,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:20,307 INFO L462 AbstractCegarLoop]: Abstraction has 1839 states and 2952 transitions. [2019-10-13 21:14:20,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2952 transitions. [2019-10-13 21:14:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:14:20,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:20,317 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:20,318 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:20,319 INFO L82 PathProgramCache]: Analyzing trace with hash -449351993, now seen corresponding path program 1 times [2019-10-13 21:14:20,319 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:20,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893491545] [2019-10-13 21:14:20,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:20,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:20,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:14:21,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893491545] [2019-10-13 21:14:21,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758392402] [2019-10-13 21:14:21,075 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 21:14:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:21,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:21,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:14:21,886 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:22,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:22,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:22,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:22,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-10-13 21:14:22,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682388204] [2019-10-13 21:14:22,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:22,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:22,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:22,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:14:22,405 INFO L87 Difference]: Start difference. First operand 1839 states and 2952 transitions. Second operand 7 states. [2019-10-13 21:14:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:24,074 INFO L93 Difference]: Finished difference Result 3631 states and 5869 transitions. [2019-10-13 21:14:24,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:24,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-10-13 21:14:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:24,092 INFO L225 Difference]: With dead ends: 3631 [2019-10-13 21:14:24,092 INFO L226 Difference]: Without dead ends: 1843 [2019-10-13 21:14:24,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:14:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2019-10-13 21:14:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2019-10-13 21:14:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2019-10-13 21:14:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2957 transitions. [2019-10-13 21:14:24,284 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2957 transitions. Word has length 164 [2019-10-13 21:14:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:24,285 INFO L462 AbstractCegarLoop]: Abstraction has 1843 states and 2957 transitions. [2019-10-13 21:14:24,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2957 transitions. [2019-10-13 21:14:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:14:24,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:24,301 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:24,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:24,510 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:24,512 INFO L82 PathProgramCache]: Analyzing trace with hash 925448506, now seen corresponding path program 1 times [2019-10-13 21:14:24,512 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:24,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484761761] [2019-10-13 21:14:24,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:24,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:24,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:25,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484761761] [2019-10-13 21:14:25,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:25,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:14:25,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592030872] [2019-10-13 21:14:25,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:14:25,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:25,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:14:25,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:14:25,432 INFO L87 Difference]: Start difference. First operand 1843 states and 2957 transitions. Second operand 26 states. [2019-10-13 21:14:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:33,633 INFO L93 Difference]: Finished difference Result 4632 states and 7133 transitions. [2019-10-13 21:14:33,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-13 21:14:33,634 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 165 [2019-10-13 21:14:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:33,661 INFO L225 Difference]: With dead ends: 4632 [2019-10-13 21:14:33,662 INFO L226 Difference]: Without dead ends: 4399 [2019-10-13 21:14:33,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-10-13 21:14:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2019-10-13 21:14:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 3874. [2019-10-13 21:14:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3874 states. [2019-10-13 21:14:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 6175 transitions. [2019-10-13 21:14:33,940 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 6175 transitions. Word has length 165 [2019-10-13 21:14:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:33,941 INFO L462 AbstractCegarLoop]: Abstraction has 3874 states and 6175 transitions. [2019-10-13 21:14:33,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:14:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 6175 transitions. [2019-10-13 21:14:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:33,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:33,971 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:33,971 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1359879993, now seen corresponding path program 1 times [2019-10-13 21:14:33,972 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:33,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289902762] [2019-10-13 21:14:33,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:33,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:33,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:34,230 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 21:14:34,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289902762] [2019-10-13 21:14:34,231 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:34,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:14:34,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877112035] [2019-10-13 21:14:34,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:14:34,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:34,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:14:34,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:14:34,239 INFO L87 Difference]: Start difference. First operand 3874 states and 6175 transitions. Second operand 10 states. [2019-10-13 21:14:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:34,467 INFO L93 Difference]: Finished difference Result 4609 states and 7133 transitions. [2019-10-13 21:14:34,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:34,468 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2019-10-13 21:14:34,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:34,495 INFO L225 Difference]: With dead ends: 4609 [2019-10-13 21:14:34,495 INFO L226 Difference]: Without dead ends: 3905 [2019-10-13 21:14:34,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2019-10-13 21:14:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3900. [2019-10-13 21:14:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3900 states. [2019-10-13 21:14:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6214 transitions. [2019-10-13 21:14:34,769 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 6214 transitions. Word has length 166 [2019-10-13 21:14:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:34,770 INFO L462 AbstractCegarLoop]: Abstraction has 3900 states and 6214 transitions. [2019-10-13 21:14:34,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:14:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 6214 transitions. [2019-10-13 21:14:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:34,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:34,799 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:34,799 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:34,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:34,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1756664070, now seen corresponding path program 1 times [2019-10-13 21:14:34,800 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:34,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504878476] [2019-10-13 21:14:34,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:34,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:34,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:35,154 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 21:14:35,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504878476] [2019-10-13 21:14:35,154 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:35,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:14:35,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119564222] [2019-10-13 21:14:35,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:35,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:35,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:35,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:35,156 INFO L87 Difference]: Start difference. First operand 3900 states and 6214 transitions. Second operand 9 states. [2019-10-13 21:14:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:35,487 INFO L93 Difference]: Finished difference Result 4616 states and 7144 transitions. [2019-10-13 21:14:35,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:35,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-10-13 21:14:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:35,513 INFO L225 Difference]: With dead ends: 4616 [2019-10-13 21:14:35,513 INFO L226 Difference]: Without dead ends: 3906 [2019-10-13 21:14:35,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:14:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2019-10-13 21:14:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3906. [2019-10-13 21:14:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3906 states. [2019-10-13 21:14:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3906 states to 3906 states and 6221 transitions. [2019-10-13 21:14:35,726 INFO L78 Accepts]: Start accepts. Automaton has 3906 states and 6221 transitions. Word has length 166 [2019-10-13 21:14:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:35,726 INFO L462 AbstractCegarLoop]: Abstraction has 3906 states and 6221 transitions. [2019-10-13 21:14:35,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3906 states and 6221 transitions. [2019-10-13 21:14:35,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:35,745 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:35,745 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:35,745 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1089317603, now seen corresponding path program 1 times [2019-10-13 21:14:35,746 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:35,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664287227] [2019-10-13 21:14:35,746 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:35,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:35,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:35,884 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 21:14:35,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664287227] [2019-10-13 21:14:35,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:35,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:14:35,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018778267] [2019-10-13 21:14:35,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:14:35,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:35,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:14:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:14:35,887 INFO L87 Difference]: Start difference. First operand 3906 states and 6221 transitions. Second operand 5 states. [2019-10-13 21:14:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:37,331 INFO L93 Difference]: Finished difference Result 7631 states and 11850 transitions. [2019-10-13 21:14:37,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:37,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-10-13 21:14:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:37,393 INFO L225 Difference]: With dead ends: 7631 [2019-10-13 21:14:37,393 INFO L226 Difference]: Without dead ends: 6915 [2019-10-13 21:14:37,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6915 states. [2019-10-13 21:14:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6915 to 6132. [2019-10-13 21:14:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6132 states. [2019-10-13 21:14:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 9503 transitions. [2019-10-13 21:14:37,761 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 9503 transitions. Word has length 166 [2019-10-13 21:14:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:37,763 INFO L462 AbstractCegarLoop]: Abstraction has 6132 states and 9503 transitions. [2019-10-13 21:14:37,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:14:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 9503 transitions. [2019-10-13 21:14:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:37,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:37,787 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:37,787 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash -920786238, now seen corresponding path program 1 times [2019-10-13 21:14:37,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:37,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44853555] [2019-10-13 21:14:37,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:37,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:37,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:37,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44853555] [2019-10-13 21:14:37,958 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:37,958 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:14:37,958 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836890139] [2019-10-13 21:14:37,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:37,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:37,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:37,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:37,960 INFO L87 Difference]: Start difference. First operand 6132 states and 9503 transitions. Second operand 9 states.