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_spec3_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:21,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:21,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:21,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:21,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:21,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:21,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:21,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:21,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:21,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:21,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:21,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:21,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:21,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:21,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:21,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:21,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:21,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:21,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:21,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:21,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:21,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:21,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:21,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:21,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:21,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:21,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:21,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:21,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:21,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:21,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:21,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:21,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:21,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:21,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:21,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:21,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:21,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:21,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:21,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:21,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:21,972 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 [2019-10-15 01:14:21,986 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:21,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:21,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:21,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:21,988 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:21,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:21,989 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:21,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:21,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:21,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:21,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:21,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:21,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:21,990 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:21,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:21,991 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:21,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:21,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:21,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:21,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:21,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:21,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:21,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:21,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:21,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:21,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:21,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:21,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:21,994 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 [2019-10-15 01:14:22,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:22,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:22,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:22,338 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:22,339 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:22,340 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c [2019-10-15 01:14:22,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d7d4e84/c7cfc2f1ce5744359ab17232bb7965ac/FLAG403bb1ca0 [2019-10-15 01:14:23,073 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:23,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c [2019-10-15 01:14:23,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d7d4e84/c7cfc2f1ce5744359ab17232bb7965ac/FLAG403bb1ca0 [2019-10-15 01:14:23,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d7d4e84/c7cfc2f1ce5744359ab17232bb7965ac [2019-10-15 01:14:23,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:23,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:23,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:23,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:23,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:23,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:23" (1/1) ... [2019-10-15 01:14:23,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4e00a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:23, skipping insertion in model container [2019-10-15 01:14:23,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:23" (1/1) ... [2019-10-15 01:14:23,227 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:23,307 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:23,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:23,985 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:24,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:24,217 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:24,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24 WrapperNode [2019-10-15 01:14:24,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:24,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:24,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:24,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:24,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (1/1) ... [2019-10-15 01:14:24,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:24,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:24,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:24,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:24,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (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 [2019-10-15 01:14:24,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:24,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:24,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:24,511 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:24,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:24,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:24,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:24,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:24,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:24,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:24,515 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:24,516 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:24,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:24,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:24,517 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:24,517 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:24,517 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:24,517 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:24,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:24,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:24,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:24,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:26,941 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:26,942 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:26,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:26 BoogieIcfgContainer [2019-10-15 01:14:26,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:26,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:26,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:26,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:26,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:23" (1/3) ... [2019-10-15 01:14:26,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3823d405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:26, skipping insertion in model container [2019-10-15 01:14:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:24" (2/3) ... [2019-10-15 01:14:26,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3823d405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:26, skipping insertion in model container [2019-10-15 01:14:26,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:26" (3/3) ... [2019-10-15 01:14:26,954 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product13.cil.c [2019-10-15 01:14:26,964 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:26,974 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:26,986 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:27,018 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:27,019 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:27,019 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:27,019 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:27,019 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:27,019 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:27,019 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:27,019 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states. [2019-10-15 01:14:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:14:27,069 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:27,070 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:27,072 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash 772821080, now seen corresponding path program 1 times [2019-10-15 01:14:27,090 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:27,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749050815] [2019-10-15 01:14:27,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:27,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749050815] [2019-10-15 01:14:27,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:27,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:27,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915848365] [2019-10-15 01:14:27,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:27,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:27,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:27,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:27,803 INFO L87 Difference]: Start difference. First operand 459 states. Second operand 2 states. [2019-10-15 01:14:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:27,871 INFO L93 Difference]: Finished difference Result 627 states and 831 transitions. [2019-10-15 01:14:27,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:27,873 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-10-15 01:14:27,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:27,896 INFO L225 Difference]: With dead ends: 627 [2019-10-15 01:14:27,896 INFO L226 Difference]: Without dead ends: 414 [2019-10-15 01:14:27,903 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 [2019-10-15 01:14:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-15 01:14:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2019-10-15 01:14:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2019-10-15 01:14:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 551 transitions. [2019-10-15 01:14:28,025 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 551 transitions. Word has length 170 [2019-10-15 01:14:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:28,029 INFO L462 AbstractCegarLoop]: Abstraction has 414 states and 551 transitions. [2019-10-15 01:14:28,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 551 transitions. [2019-10-15 01:14:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:14:28,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:28,045 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:28,045 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash -978519588, now seen corresponding path program 1 times [2019-10-15 01:14:28,046 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:28,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698559261] [2019-10-15 01:14:28,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:28,050 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:28,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:28,339 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698559261] [2019-10-15 01:14:28,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:28,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:28,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083917004] [2019-10-15 01:14:28,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:28,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:28,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:28,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:28,343 INFO L87 Difference]: Start difference. First operand 414 states and 551 transitions. Second operand 3 states. [2019-10-15 01:14:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:28,392 INFO L93 Difference]: Finished difference Result 610 states and 796 transitions. [2019-10-15 01:14:28,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:28,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:14:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:28,398 INFO L225 Difference]: With dead ends: 610 [2019-10-15 01:14:28,398 INFO L226 Difference]: Without dead ends: 417 [2019-10-15 01:14:28,401 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 [2019-10-15 01:14:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2019-10-15 01:14:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2019-10-15 01:14:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-10-15 01:14:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 553 transitions. [2019-10-15 01:14:28,429 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 553 transitions. Word has length 171 [2019-10-15 01:14:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:28,430 INFO L462 AbstractCegarLoop]: Abstraction has 416 states and 553 transitions. [2019-10-15 01:14:28,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 553 transitions. [2019-10-15 01:14:28,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:14:28,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:28,434 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:28,434 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:28,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:28,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1778759344, now seen corresponding path program 1 times [2019-10-15 01:14:28,435 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:28,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807873820] [2019-10-15 01:14:28,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:28,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:28,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:28,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807873820] [2019-10-15 01:14:28,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:28,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:28,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070979721] [2019-10-15 01:14:28,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:28,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:28,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:28,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:28,664 INFO L87 Difference]: Start difference. First operand 416 states and 553 transitions. Second operand 3 states. [2019-10-15 01:14:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:28,711 INFO L93 Difference]: Finished difference Result 806 states and 1101 transitions. [2019-10-15 01:14:28,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:28,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-15 01:14:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:28,723 INFO L225 Difference]: With dead ends: 806 [2019-10-15 01:14:28,723 INFO L226 Difference]: Without dead ends: 455 [2019-10-15 01:14:28,731 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 [2019-10-15 01:14:28,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-10-15 01:14:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 454. [2019-10-15 01:14:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-10-15 01:14:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 619 transitions. [2019-10-15 01:14:28,782 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 619 transitions. Word has length 177 [2019-10-15 01:14:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:28,783 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 619 transitions. [2019-10-15 01:14:28,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:28,783 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 619 transitions. [2019-10-15 01:14:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:14:28,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:28,791 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:28,791 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:28,792 INFO L82 PathProgramCache]: Analyzing trace with hash -603589234, now seen corresponding path program 1 times [2019-10-15 01:14:28,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:28,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849028759] [2019-10-15 01:14:28,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:28,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:28,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:29,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849028759] [2019-10-15 01:14:29,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:29,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:14:29,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525483112] [2019-10-15 01:14:29,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:29,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:14:29,280 INFO L87 Difference]: Start difference. First operand 454 states and 619 transitions. Second operand 12 states. [2019-10-15 01:14:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:37,394 INFO L93 Difference]: Finished difference Result 1819 states and 2403 transitions. [2019-10-15 01:14:37,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-15 01:14:37,396 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2019-10-15 01:14:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:37,420 INFO L225 Difference]: With dead ends: 1819 [2019-10-15 01:14:37,421 INFO L226 Difference]: Without dead ends: 1485 [2019-10-15 01:14:37,426 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2019-10-15 01:14:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2019-10-15 01:14:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1466. [2019-10-15 01:14:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2019-10-15 01:14:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1913 transitions. [2019-10-15 01:14:37,565 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1913 transitions. Word has length 178 [2019-10-15 01:14:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:37,566 INFO L462 AbstractCegarLoop]: Abstraction has 1466 states and 1913 transitions. [2019-10-15 01:14:37,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1913 transitions. [2019-10-15 01:14:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:14:37,575 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:37,575 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:37,576 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash 14445678, now seen corresponding path program 1 times [2019-10-15 01:14:37,577 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:37,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619842158] [2019-10-15 01:14:37,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:37,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:37,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:38,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619842158] [2019-10-15 01:14:38,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:38,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:14:38,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33168267] [2019-10-15 01:14:38,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:38,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:38,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:38,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:38,137 INFO L87 Difference]: Start difference. First operand 1466 states and 1913 transitions. Second operand 16 states. [2019-10-15 01:14:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:38,522 INFO L93 Difference]: Finished difference Result 2325 states and 3021 transitions. [2019-10-15 01:14:38,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:38,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 179 [2019-10-15 01:14:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:38,532 INFO L225 Difference]: With dead ends: 2325 [2019-10-15 01:14:38,533 INFO L226 Difference]: Without dead ends: 1070 [2019-10-15 01:14:38,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:14:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2019-10-15 01:14:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 952. [2019-10-15 01:14:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2019-10-15 01:14:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1251 transitions. [2019-10-15 01:14:38,599 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1251 transitions. Word has length 179 [2019-10-15 01:14:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:38,601 INFO L462 AbstractCegarLoop]: Abstraction has 952 states and 1251 transitions. [2019-10-15 01:14:38,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1251 transitions. [2019-10-15 01:14:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:14:38,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:38,606 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:38,606 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:38,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2119995647, now seen corresponding path program 1 times [2019-10-15 01:14:38,607 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:38,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502914014] [2019-10-15 01:14:38,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:38,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:38,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:14:40,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502914014] [2019-10-15 01:14:40,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725514800] [2019-10-15 01:14:40,923 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 [2019-10-15 01:14:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:41,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:41,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:14:42,002 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:42,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:42,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:42,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:42,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:42,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [51, 9] total 63 [2019-10-15 01:14:42,967 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839733590] [2019-10-15 01:14:42,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:42,968 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:42,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:42,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3748, Unknown=0, NotChecked=0, Total=3906 [2019-10-15 01:14:42,970 INFO L87 Difference]: Start difference. First operand 952 states and 1251 transitions. Second operand 9 states. [2019-10-15 01:14:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:44,105 INFO L93 Difference]: Finished difference Result 1882 states and 2482 transitions. [2019-10-15 01:14:44,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:44,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 188 [2019-10-15 01:14:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:44,117 INFO L225 Difference]: With dead ends: 1882 [2019-10-15 01:14:44,117 INFO L226 Difference]: Without dead ends: 966 [2019-10-15 01:14:44,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 363 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=185, Invalid=4105, Unknown=0, NotChecked=0, Total=4290 [2019-10-15 01:14:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-10-15 01:14:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2019-10-15 01:14:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2019-10-15 01:14:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1269 transitions. [2019-10-15 01:14:44,218 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1269 transitions. Word has length 188 [2019-10-15 01:14:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:44,219 INFO L462 AbstractCegarLoop]: Abstraction has 966 states and 1269 transitions. [2019-10-15 01:14:44,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1269 transitions. [2019-10-15 01:14:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:14:44,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:44,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:44,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:44,438 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 870435541, now seen corresponding path program 1 times [2019-10-15 01:14:44,446 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:44,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905948218] [2019-10-15 01:14:44,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:14:46,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905948218] [2019-10-15 01:14:46,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384719546] [2019-10-15 01:14:46,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:47,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:47,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:14:47,337 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:47,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:47,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:47,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:47,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [49, 7] total 57 [2019-10-15 01:14:47,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019029967] [2019-10-15 01:14:47,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:47,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:47,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:47,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=3057, Unknown=0, NotChecked=0, Total=3192 [2019-10-15 01:14:47,877 INFO L87 Difference]: Start difference. First operand 966 states and 1269 transitions. Second operand 7 states. [2019-10-15 01:14:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:49,082 INFO L93 Difference]: Finished difference Result 1883 states and 2486 transitions. [2019-10-15 01:14:49,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:49,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-15 01:14:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:49,088 INFO L225 Difference]: With dead ends: 1883 [2019-10-15 01:14:49,089 INFO L226 Difference]: Without dead ends: 968 [2019-10-15 01:14:49,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=3269, Unknown=0, NotChecked=0, Total=3422 [2019-10-15 01:14:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2019-10-15 01:14:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2019-10-15 01:14:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2019-10-15 01:14:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1272 transitions. [2019-10-15 01:14:49,152 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1272 transitions. Word has length 189 [2019-10-15 01:14:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:49,152 INFO L462 AbstractCegarLoop]: Abstraction has 968 states and 1272 transitions. [2019-10-15 01:14:49,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1272 transitions. [2019-10-15 01:14:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:14:49,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:49,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:49,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:49,364 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:49,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:49,365 INFO L82 PathProgramCache]: Analyzing trace with hash 283611253, now seen corresponding path program 1 times [2019-10-15 01:14:49,365 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:49,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82301213] [2019-10-15 01:14:49,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:49,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:49,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:50,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82301213] [2019-10-15 01:14:50,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:50,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2019-10-15 01:14:50,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267939377] [2019-10-15 01:14:50,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-15 01:14:50,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:50,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-15 01:14:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2019-10-15 01:14:50,791 INFO L87 Difference]: Start difference. First operand 968 states and 1272 transitions. Second operand 44 states.