/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:55:20,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:55:20,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:55:20,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:55:20,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:55:20,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:55:20,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:55:20,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:55:20,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:55:20,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:55:20,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:55:20,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:55:20,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:55:20,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:55:20,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:55:20,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:55:20,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:55:20,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:55:20,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:55:20,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:55:20,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:55:20,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:55:20,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:55:20,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:55:20,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:55:20,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:55:20,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:55:20,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:55:20,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:55:20,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:55:20,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:55:20,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:55:20,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:55:20,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:55:20,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:55:20,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:55:20,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:55:20,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:55:20,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:55:20,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:55:20,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:55:20,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:55:20,317 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:55:20,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:55:20,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:55:20,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:55:20,319 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:55:20,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:55:20,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:55:20,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:55:20,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:55:20,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:55:20,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:55:20,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:55:20,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:55:20,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:55:20,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:55:20,321 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:55:20,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:55:20,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:55:20,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:55:20,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:55:20,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:55:20,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:20,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:55:20,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:55:20,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:55:20,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:55:20,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:55:20,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:55:20,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:55:20,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:55:20,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:55:20,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:55:20,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:55:20,650 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:55:20,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c [2019-11-07 00:55:20,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff33b313/3ef8dde0975a408d9bd8020cf030ccaf/FLAG3dbc98077 [2019-11-07 00:55:21,360 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:55:21,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c [2019-11-07 00:55:21,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff33b313/3ef8dde0975a408d9bd8020cf030ccaf/FLAG3dbc98077 [2019-11-07 00:55:21,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff33b313/3ef8dde0975a408d9bd8020cf030ccaf [2019-11-07 00:55:21,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:55:21,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:55:21,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:21,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:55:21,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:55:21,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:21" (1/1) ... [2019-11-07 00:55:21,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4449781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:21, skipping insertion in model container [2019-11-07 00:55:21,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:21" (1/1) ... [2019-11-07 00:55:21,599 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:55:21,674 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:55:22,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:22,435 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:55:22,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:22,665 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:55:22,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22 WrapperNode [2019-11-07 00:55:22,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:22,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:55:22,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:55:22,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:55:22,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... [2019-11-07 00:55:22,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:55:22,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:55:22,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:55:22,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:55:22,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:55:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:55:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:55:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:55:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:55:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:55:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:55:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:55:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:55:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:55:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:55:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:55:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:55:22,965 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:55:22,965 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:55:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:55:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:55:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:55:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:55:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:55:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:55:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:55:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:55:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:55:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:55:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:55:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:55:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:55:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:55:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:55:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:55:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:55:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:55:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:55:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:55:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:55:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:55:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:55:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:55:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:55:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:55:22,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:55:22,971 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:55:22,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:22,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:22,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:22,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:55:22,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:55:22,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:55:22,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:55:22,972 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:55:22,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:55:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:55:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:55:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:55:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:55:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-11-07 00:55:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:55:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:55:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:55:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:55:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:55:22,976 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:55:22,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:55:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:55:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:55:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:55:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:55:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:55:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:55:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:55:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:55:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:55:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:55:22,978 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:55:22,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:55:22,979 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:55:22,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:55:22,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:55:22,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:55:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:55:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:55:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:55:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:55:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:55:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:55:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:55:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:55:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:55:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:55:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:55:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:55:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:55:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:55:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:55:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:55:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:55:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:55:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:55:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:55:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:55:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:55:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:55:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:55:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:55:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:55:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:55:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:55:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:55:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:55:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:55:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:55:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:55:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:55:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:55:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:55:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:55:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:55:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:55:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:55:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:55:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:55:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:55:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:55:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:55:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:55:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:55:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:55:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:55:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:55:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:55:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:55:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:55:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:55:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:55:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:55:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:55:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:55:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:55:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:55:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:55:23,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:55:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:55:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:55:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:55:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:55:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:55:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:55:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:55:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:55:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:55:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:55:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:55:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:55:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:55:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:55:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-11-07 00:55:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:55:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:55:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:55:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:55:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:55:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:55:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:55:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:55:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:55:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:55:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:55:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:55:25,091 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:55:25,091 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:55:25,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:25 BoogieIcfgContainer [2019-11-07 00:55:25,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:55:25,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:55:25,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:55:25,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:55:25,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:21" (1/3) ... [2019-11-07 00:55:25,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4128e017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:25, skipping insertion in model container [2019-11-07 00:55:25,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:22" (2/3) ... [2019-11-07 00:55:25,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4128e017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:25, skipping insertion in model container [2019-11-07 00:55:25,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:25" (3/3) ... [2019-11-07 00:55:25,101 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product22.cil.c [2019-11-07 00:55:25,111 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:55:25,121 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:55:25,133 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:55:25,162 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:55:25,163 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:55:25,163 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:55:25,163 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:55:25,163 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:55:25,163 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:55:25,163 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:55:25,163 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:55:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states. [2019-11-07 00:55:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 00:55:25,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:25,215 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:25,217 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:25,223 INFO L82 PathProgramCache]: Analyzing trace with hash 145305660, now seen corresponding path program 1 times [2019-11-07 00:55:25,234 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:25,234 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127240039] [2019-11-07 00:55:25,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:25,912 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127240039] [2019-11-07 00:55:25,913 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:25,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:55:25,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323698263] [2019-11-07 00:55:25,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:55:25,927 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:55:25,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:25,944 INFO L87 Difference]: Start difference. First operand 512 states. Second operand 2 states. [2019-11-07 00:55:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:26,017 INFO L93 Difference]: Finished difference Result 755 states and 991 transitions. [2019-11-07 00:55:26,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:55:26,019 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-11-07 00:55:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:26,051 INFO L225 Difference]: With dead ends: 755 [2019-11-07 00:55:26,051 INFO L226 Difference]: Without dead ends: 489 [2019-11-07 00:55:26,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-11-07 00:55:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-11-07 00:55:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-11-07 00:55:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 647 transitions. [2019-11-07 00:55:26,146 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 647 transitions. Word has length 145 [2019-11-07 00:55:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:26,149 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 647 transitions. [2019-11-07 00:55:26,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:55:26,149 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 647 transitions. [2019-11-07 00:55:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 00:55:26,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:26,157 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:26,157 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1475603101, now seen corresponding path program 1 times [2019-11-07 00:55:26,158 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:26,158 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799795489] [2019-11-07 00:55:26,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:26,360 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799795489] [2019-11-07 00:55:26,360 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:26,360 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:26,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757007061] [2019-11-07 00:55:26,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:26,376 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:26,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:26,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:26,376 INFO L87 Difference]: Start difference. First operand 489 states and 647 transitions. Second operand 3 states. [2019-11-07 00:55:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:26,472 INFO L93 Difference]: Finished difference Result 738 states and 960 transitions. [2019-11-07 00:55:26,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:26,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-11-07 00:55:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:26,485 INFO L225 Difference]: With dead ends: 738 [2019-11-07 00:55:26,486 INFO L226 Difference]: Without dead ends: 492 [2019-11-07 00:55:26,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-11-07 00:55:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-11-07 00:55:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-11-07 00:55:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2019-11-07 00:55:26,552 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 146 [2019-11-07 00:55:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:26,553 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2019-11-07 00:55:26,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2019-11-07 00:55:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:55:26,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:26,557 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:26,558 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1631744993, now seen corresponding path program 1 times [2019-11-07 00:55:26,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:26,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30908623] [2019-11-07 00:55:26,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:26,806 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30908623] [2019-11-07 00:55:26,806 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:26,806 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:26,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275232424] [2019-11-07 00:55:26,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:26,813 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:26,813 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand 3 states. [2019-11-07 00:55:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:26,869 INFO L93 Difference]: Finished difference Result 960 states and 1299 transitions. [2019-11-07 00:55:26,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:26,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-11-07 00:55:26,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:26,878 INFO L225 Difference]: With dead ends: 960 [2019-11-07 00:55:26,878 INFO L226 Difference]: Without dead ends: 534 [2019-11-07 00:55:26,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:26,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-11-07 00:55:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-11-07 00:55:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-11-07 00:55:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 721 transitions. [2019-11-07 00:55:26,915 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 721 transitions. Word has length 158 [2019-11-07 00:55:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:26,916 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 721 transitions. [2019-11-07 00:55:26,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 721 transitions. [2019-11-07 00:55:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 00:55:26,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:26,920 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:26,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash 34916284, now seen corresponding path program 1 times [2019-11-07 00:55:26,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:26,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821039201] [2019-11-07 00:55:26,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:27,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821039201] [2019-11-07 00:55:27,054 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:27,054 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:27,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840694160] [2019-11-07 00:55:27,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:27,055 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:27,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:27,056 INFO L87 Difference]: Start difference. First operand 533 states and 721 transitions. Second operand 3 states. [2019-11-07 00:55:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:27,092 INFO L93 Difference]: Finished difference Result 1083 states and 1510 transitions. [2019-11-07 00:55:27,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:27,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-11-07 00:55:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:27,100 INFO L225 Difference]: With dead ends: 1083 [2019-11-07 00:55:27,100 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:55:27,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:55:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 614. [2019-11-07 00:55:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-11-07 00:55:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 859 transitions. [2019-11-07 00:55:27,139 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 859 transitions. Word has length 159 [2019-11-07 00:55:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:27,140 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 859 transitions. [2019-11-07 00:55:27,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 859 transitions. [2019-11-07 00:55:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:55:27,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:27,147 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:27,147 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:27,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1085880483, now seen corresponding path program 1 times [2019-11-07 00:55:27,148 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:27,148 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267733074] [2019-11-07 00:55:27,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:55:27,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267733074] [2019-11-07 00:55:27,455 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:27,455 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:27,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123842533] [2019-11-07 00:55:27,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:27,456 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:27,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:27,457 INFO L87 Difference]: Start difference. First operand 614 states and 859 transitions. Second operand 3 states. [2019-11-07 00:55:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:27,493 INFO L93 Difference]: Finished difference Result 924 states and 1264 transitions. [2019-11-07 00:55:27,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:27,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-11-07 00:55:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:27,501 INFO L225 Difference]: With dead ends: 924 [2019-11-07 00:55:27,501 INFO L226 Difference]: Without dead ends: 680 [2019-11-07 00:55:27,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-11-07 00:55:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2019-11-07 00:55:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2019-11-07 00:55:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 947 transitions. [2019-11-07 00:55:27,566 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 947 transitions. Word has length 162 [2019-11-07 00:55:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:27,568 INFO L462 AbstractCegarLoop]: Abstraction has 680 states and 947 transitions. [2019-11-07 00:55:27,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 947 transitions. [2019-11-07 00:55:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-11-07 00:55:27,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:27,580 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:27,580 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:27,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:27,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1436879733, now seen corresponding path program 1 times [2019-11-07 00:55:27,581 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:27,582 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942734590] [2019-11-07 00:55:27,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 00:55:28,388 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942734590] [2019-11-07 00:55:28,389 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503315589] [2019-11-07 00:55:28,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:29,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:29,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 00:55:29,627 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:30,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:30,579 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:30,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-07 00:55:30,840 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:55:30,840 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:55:30,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521020907] [2019-11-07 00:55:30,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:55:30,842 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:30,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:55:30,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:30,844 INFO L87 Difference]: Start difference. First operand 680 states and 947 transitions. Second operand 9 states. [2019-11-07 00:55:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:32,816 INFO L93 Difference]: Finished difference Result 1338 states and 1874 transitions. [2019-11-07 00:55:32,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:55:32,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-11-07 00:55:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:32,824 INFO L225 Difference]: With dead ends: 1338 [2019-11-07 00:55:32,825 INFO L226 Difference]: Without dead ends: 694 [2019-11-07 00:55:32,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:55:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-11-07 00:55:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2019-11-07 00:55:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-11-07 00:55:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 965 transitions. [2019-11-07 00:55:32,889 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 965 transitions. Word has length 280 [2019-11-07 00:55:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:32,889 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 965 transitions. [2019-11-07 00:55:32,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:55:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 965 transitions. [2019-11-07 00:55:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-11-07 00:55:32,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:32,901 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:33,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:33,117 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash -252856980, now seen corresponding path program 1 times [2019-11-07 00:55:33,119 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:33,119 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787039791] [2019-11-07 00:55:33,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 00:55:33,785 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787039791] [2019-11-07 00:55:33,786 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983059644] [2019-11-07 00:55:33,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:34,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:55:34,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 00:55:34,716 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:35,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:35,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-07 00:55:35,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:55:35,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:55:35,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169978776] [2019-11-07 00:55:35,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:55:35,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:35,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:55:35,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:55:35,576 INFO L87 Difference]: Start difference. First operand 694 states and 965 transitions. Second operand 7 states. [2019-11-07 00:55:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:36,900 INFO L93 Difference]: Finished difference Result 1339 states and 1880 transitions. [2019-11-07 00:55:36,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:55:36,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-11-07 00:55:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:36,905 INFO L225 Difference]: With dead ends: 1339 [2019-11-07 00:55:36,905 INFO L226 Difference]: Without dead ends: 696 [2019-11-07 00:55:36,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:55:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-11-07 00:55:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2019-11-07 00:55:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-11-07 00:55:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 968 transitions. [2019-11-07 00:55:36,973 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 968 transitions. Word has length 281 [2019-11-07 00:55:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:36,973 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 968 transitions. [2019-11-07 00:55:36,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:55:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 968 transitions. [2019-11-07 00:55:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-11-07 00:55:36,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:36,980 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:37,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:37,188 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:37,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:37,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1744330537, now seen corresponding path program 1 times [2019-11-07 00:55:37,188 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:37,189 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129506450] [2019-11-07 00:55:37,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 00:55:38,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129506450] [2019-11-07 00:55:38,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312732268] [2019-11-07 00:55:38,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:39,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:39,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 00:55:40,031 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:40,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:40,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:40,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-07 00:55:40,997 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:40,998 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:55:40,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890391387] [2019-11-07 00:55:40,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:55:40,999 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:40,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:55:41,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:55:41,000 INFO L87 Difference]: Start difference. First operand 696 states and 968 transitions. Second operand 16 states. [2019-11-07 00:55:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:43,078 INFO L93 Difference]: Finished difference Result 1343 states and 1878 transitions. [2019-11-07 00:55:43,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:55:43,079 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-11-07 00:55:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:43,083 INFO L225 Difference]: With dead ends: 1343 [2019-11-07 00:55:43,084 INFO L226 Difference]: Without dead ends: 708 [2019-11-07 00:55:43,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:55:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-11-07 00:55:43,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-11-07 00:55:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-11-07 00:55:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 979 transitions. [2019-11-07 00:55:43,122 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 979 transitions. Word has length 282 [2019-11-07 00:55:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:43,123 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 979 transitions. [2019-11-07 00:55:43,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:55:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 979 transitions. [2019-11-07 00:55:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-11-07 00:55:43,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:43,129 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:43,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:43,336 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:43,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1639895400, now seen corresponding path program 2 times [2019-11-07 00:55:43,337 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:43,338 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698778369] [2019-11-07 00:55:43,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-07 00:55:43,862 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698778369] [2019-11-07 00:55:43,863 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926463453] [2019-11-07 00:55:43,863 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:44,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:55:44,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:55:44,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:55:44,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 00:55:44,955 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:45,478 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:45,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-11-07 00:55:45,673 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:45,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:55:45,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246057243] [2019-11-07 00:55:45,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:55:45,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:45,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:55:45,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:55:45,676 INFO L87 Difference]: Start difference. First operand 706 states and 979 transitions. Second operand 12 states. [2019-11-07 00:55:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:47,678 INFO L93 Difference]: Finished difference Result 1334 states and 1866 transitions. [2019-11-07 00:55:47,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:55:47,679 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-11-07 00:55:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:47,684 INFO L225 Difference]: With dead ends: 1334 [2019-11-07 00:55:47,684 INFO L226 Difference]: Without dead ends: 708 [2019-11-07 00:55:47,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-11-07 00:55:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-11-07 00:55:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-11-07 00:55:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 978 transitions. [2019-11-07 00:55:47,718 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 978 transitions. Word has length 283 [2019-11-07 00:55:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:47,719 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 978 transitions. [2019-11-07 00:55:47,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:55:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 978 transitions. [2019-11-07 00:55:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-11-07 00:55:47,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:47,723 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:47,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:47,933 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1460952391, now seen corresponding path program 3 times [2019-11-07 00:55:47,933 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:47,934 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183861521] [2019-11-07 00:55:47,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-07 00:55:48,385 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183861521] [2019-11-07 00:55:48,385 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391582001] [2019-11-07 00:55:48,385 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:48,996 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:55:48,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:55:49,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:49,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 00:55:49,268 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:49,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:49,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:50,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-11-07 00:55:50,173 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:50,173 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-11-07 00:55:50,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876115231] [2019-11-07 00:55:50,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:55:50,174 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:50,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:55:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:50,175 INFO L87 Difference]: Start difference. First operand 706 states and 978 transitions. Second operand 15 states. [2019-11-07 00:55:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:51,823 INFO L93 Difference]: Finished difference Result 1341 states and 1873 transitions. [2019-11-07 00:55:51,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:55:51,824 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-11-07 00:55:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:51,830 INFO L225 Difference]: With dead ends: 1341 [2019-11-07 00:55:51,831 INFO L226 Difference]: Without dead ends: 710 [2019-11-07 00:55:51,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:55:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-11-07 00:55:51,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 706. [2019-11-07 00:55:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-11-07 00:55:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 977 transitions. [2019-11-07 00:55:51,863 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 977 transitions. Word has length 284 [2019-11-07 00:55:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:51,864 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 977 transitions. [2019-11-07 00:55:51,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:55:51,864 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 977 transitions. [2019-11-07 00:55:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-11-07 00:55:51,868 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:51,869 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:52,084 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:52,085 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2142614209, now seen corresponding path program 1 times [2019-11-07 00:55:52,085 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:52,085 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865777536] [2019-11-07 00:55:52,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-07 00:55:52,466 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865777536] [2019-11-07 00:55:52,466 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679210905] [2019-11-07 00:55:52,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:53,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:55:53,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 00:55:53,467 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:53,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:54,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-11-07 00:55:54,112 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:54,112 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-11-07 00:55:54,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269307595] [2019-11-07 00:55:54,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:55:54,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:54,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:55:54,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:55:54,115 INFO L87 Difference]: Start difference. First operand 706 states and 977 transitions. Second operand 11 states. [2019-11-07 00:55:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:55,652 INFO L93 Difference]: Finished difference Result 1338 states and 1870 transitions. [2019-11-07 00:55:55,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:55:55,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2019-11-07 00:55:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:55,657 INFO L225 Difference]: With dead ends: 1338 [2019-11-07 00:55:55,658 INFO L226 Difference]: Without dead ends: 712 [2019-11-07 00:55:55,661 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 564 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:55:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-11-07 00:55:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 708. [2019-11-07 00:55:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-11-07 00:55:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 980 transitions. [2019-11-07 00:55:55,688 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 980 transitions. Word has length 285 [2019-11-07 00:55:55,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:55,689 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 980 transitions. [2019-11-07 00:55:55,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:55:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 980 transitions. [2019-11-07 00:55:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-11-07 00:55:55,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:55,693 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:55,901 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:55,902 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:55,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1002457353, now seen corresponding path program 1 times [2019-11-07 00:55:55,902 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:55,902 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260475681] [2019-11-07 00:55:55,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat