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_spec4_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:07,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:07,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:07,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:07,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:07,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:07,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:07,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:07,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:07,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:07,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:07,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:07,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:07,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:07,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:07,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:07,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:07,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:07,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:07,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:07,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:07,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:07,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:07,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:07,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:07,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:07,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:07,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:07,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:07,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:07,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:07,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:07,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:07,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:07,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:07,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:07,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:07,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:07,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:07,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:07,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:07,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:07,597 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:07,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:07,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:07,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:07,599 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:07,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:07,600 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:07,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:07,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:07,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:07,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:07,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:07,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:07,601 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:07,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:07,601 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:07,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:07,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:07,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:07,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:07,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:07,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:07,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:07,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:07,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:07,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:07,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:07,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:07,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:07,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:07,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:07,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:07,910 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:07,911 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:07,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2019-10-15 01:15:07,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a499420a4/9989537ad4a7452683e7d8c083ea58a8/FLAGf26883951 [2019-10-15 01:15:08,655 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:08,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2019-10-15 01:15:08,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a499420a4/9989537ad4a7452683e7d8c083ea58a8/FLAGf26883951 [2019-10-15 01:15:08,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a499420a4/9989537ad4a7452683e7d8c083ea58a8 [2019-10-15 01:15:08,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:08,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:08,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:08,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:08,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:08,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:08" (1/1) ... [2019-10-15 01:15:08,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb33164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:08, skipping insertion in model container [2019-10-15 01:15:08,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:08" (1/1) ... [2019-10-15 01:15:08,908 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:08,976 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:09,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:09,848 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:09,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:10,014 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:10,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10 WrapperNode [2019-10-15 01:15:10,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:10,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:10,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:10,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:10,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... [2019-10-15 01:15:10,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:10,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:10,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:10,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:10,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:10,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:10,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:10,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:10,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:10,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:10,377 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:15:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:15:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:10,412 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:15:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:15:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:12,443 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:12,444 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:12,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:12 BoogieIcfgContainer [2019-10-15 01:15:12,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:12,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:12,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:12,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:12,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:08" (1/3) ... [2019-10-15 01:15:12,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed1a8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:12, skipping insertion in model container [2019-10-15 01:15:12,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:10" (2/3) ... [2019-10-15 01:15:12,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed1a8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:12, skipping insertion in model container [2019-10-15 01:15:12,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:12" (3/3) ... [2019-10-15 01:15:12,455 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product17.cil.c [2019-10-15 01:15:12,466 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:12,481 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:12,493 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:12,535 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:12,535 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:12,535 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:12,535 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:12,535 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:12,535 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:12,536 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:12,536 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-10-15 01:15:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:15:12,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:12,614 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:12,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 513895372, now seen corresponding path program 1 times [2019-10-15 01:15:12,636 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:12,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507855540] [2019-10-15 01:15:12,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:12,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:12,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:13,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507855540] [2019-10-15 01:15:13,354 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:13,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:13,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129987454] [2019-10-15 01:15:13,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:13,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:13,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:13,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:13,383 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 2 states. [2019-10-15 01:15:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:13,518 INFO L93 Difference]: Finished difference Result 733 states and 1000 transitions. [2019-10-15 01:15:13,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:13,520 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-15 01:15:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:13,561 INFO L225 Difference]: With dead ends: 733 [2019-10-15 01:15:13,562 INFO L226 Difference]: Without dead ends: 489 [2019-10-15 01:15:13,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-15 01:15:13,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-15 01:15:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-15 01:15:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 672 transitions. [2019-10-15 01:15:13,681 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 672 transitions. Word has length 157 [2019-10-15 01:15:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:13,684 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 672 transitions. [2019-10-15 01:15:13,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 672 transitions. [2019-10-15 01:15:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:15:13,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:13,690 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:13,690 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1286604263, now seen corresponding path program 1 times [2019-10-15 01:15:13,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:13,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950391336] [2019-10-15 01:15:13,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:13,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:13,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:13,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950391336] [2019-10-15 01:15:13,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:13,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:13,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391685761] [2019-10-15 01:15:13,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:13,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:13,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:13,899 INFO L87 Difference]: Start difference. First operand 489 states and 672 transitions. Second operand 3 states. [2019-10-15 01:15:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:13,947 INFO L93 Difference]: Finished difference Result 716 states and 966 transitions. [2019-10-15 01:15:13,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:13,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-15 01:15:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:13,952 INFO L225 Difference]: With dead ends: 716 [2019-10-15 01:15:13,952 INFO L226 Difference]: Without dead ends: 492 [2019-10-15 01:15:13,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-15 01:15:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-15 01:15:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-15 01:15:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 674 transitions. [2019-10-15 01:15:13,993 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 674 transitions. Word has length 158 [2019-10-15 01:15:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:13,994 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 674 transitions. [2019-10-15 01:15:13,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 674 transitions. [2019-10-15 01:15:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:15:13,998 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:13,998 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:13,999 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:13,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1045004717, now seen corresponding path program 1 times [2019-10-15 01:15:13,999 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:13,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80269030] [2019-10-15 01:15:14,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:14,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80269030] [2019-10-15 01:15:14,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:14,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:14,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531856729] [2019-10-15 01:15:14,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:14,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:14,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:14,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:14,237 INFO L87 Difference]: Start difference. First operand 491 states and 674 transitions. Second operand 3 states. [2019-10-15 01:15:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:14,286 INFO L93 Difference]: Finished difference Result 958 states and 1346 transitions. [2019-10-15 01:15:14,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:14,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-15 01:15:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:14,293 INFO L225 Difference]: With dead ends: 958 [2019-10-15 01:15:14,293 INFO L226 Difference]: Without dead ends: 532 [2019-10-15 01:15:14,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-10-15 01:15:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2019-10-15 01:15:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-15 01:15:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 743 transitions. [2019-10-15 01:15:14,322 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 743 transitions. Word has length 164 [2019-10-15 01:15:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:14,323 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 743 transitions. [2019-10-15 01:15:14,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:14,323 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 743 transitions. [2019-10-15 01:15:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:15:14,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:14,328 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:14,328 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash -703696458, now seen corresponding path program 1 times [2019-10-15 01:15:14,329 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:14,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627935425] [2019-10-15 01:15:14,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:14,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:14,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627935425] [2019-10-15 01:15:14,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:14,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:14,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945110556] [2019-10-15 01:15:14,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:14,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:14,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:14,558 INFO L87 Difference]: Start difference. First operand 531 states and 743 transitions. Second operand 7 states. [2019-10-15 01:15:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:17,752 INFO L93 Difference]: Finished difference Result 971 states and 1323 transitions. [2019-10-15 01:15:17,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:17,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-15 01:15:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:17,760 INFO L225 Difference]: With dead ends: 971 [2019-10-15 01:15:17,760 INFO L226 Difference]: Without dead ends: 758 [2019-10-15 01:15:17,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-10-15 01:15:17,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 749. [2019-10-15 01:15:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-15 01:15:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1030 transitions. [2019-10-15 01:15:17,812 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1030 transitions. Word has length 165 [2019-10-15 01:15:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:17,813 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 1030 transitions. [2019-10-15 01:15:17,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1030 transitions. [2019-10-15 01:15:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:15:17,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:17,818 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:17,819 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2037721411, now seen corresponding path program 1 times [2019-10-15 01:15:17,819 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:17,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448817487] [2019-10-15 01:15:17,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:17,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:17,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:18,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448817487] [2019-10-15 01:15:18,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:18,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:15:18,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39689446] [2019-10-15 01:15:18,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:15:18,207 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:18,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:15:18,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:18,207 INFO L87 Difference]: Start difference. First operand 749 states and 1030 transitions. Second operand 18 states. [2019-10-15 01:15:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:18,733 INFO L93 Difference]: Finished difference Result 1274 states and 1738 transitions. [2019-10-15 01:15:18,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:15:18,733 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2019-10-15 01:15:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:18,739 INFO L225 Difference]: With dead ends: 1274 [2019-10-15 01:15:18,739 INFO L226 Difference]: Without dead ends: 837 [2019-10-15 01:15:18,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2019-10-15 01:15:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 835. [2019-10-15 01:15:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2019-10-15 01:15:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1149 transitions. [2019-10-15 01:15:18,786 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1149 transitions. Word has length 166 [2019-10-15 01:15:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:18,787 INFO L462 AbstractCegarLoop]: Abstraction has 835 states and 1149 transitions. [2019-10-15 01:15:18,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:15:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1149 transitions. [2019-10-15 01:15:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:15:18,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:18,791 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:18,791 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash 729638053, now seen corresponding path program 1 times [2019-10-15 01:15:18,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:18,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457400249] [2019-10-15 01:15:18,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:18,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:18,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:19,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457400249] [2019-10-15 01:15:19,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:19,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:19,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762705867] [2019-10-15 01:15:19,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:19,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:19,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:19,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:19,032 INFO L87 Difference]: Start difference. First operand 835 states and 1149 transitions. Second operand 8 states. [2019-10-15 01:15:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:19,883 INFO L93 Difference]: Finished difference Result 1742 states and 2364 transitions. [2019-10-15 01:15:19,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:19,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-10-15 01:15:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:19,898 INFO L225 Difference]: With dead ends: 1742 [2019-10-15 01:15:19,898 INFO L226 Difference]: Without dead ends: 1397 [2019-10-15 01:15:19,902 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2019-10-15 01:15:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1378. [2019-10-15 01:15:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-10-15 01:15:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1879 transitions. [2019-10-15 01:15:20,000 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1879 transitions. Word has length 175 [2019-10-15 01:15:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:20,001 INFO L462 AbstractCegarLoop]: Abstraction has 1378 states and 1879 transitions. [2019-10-15 01:15:20,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1879 transitions. [2019-10-15 01:15:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:20,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:20,008 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:20,008 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:20,008 INFO L82 PathProgramCache]: Analyzing trace with hash -225623184, now seen corresponding path program 1 times [2019-10-15 01:15:20,009 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:20,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576546926] [2019-10-15 01:15:20,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:20,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576546926] [2019-10-15 01:15:20,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:20,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-15 01:15:20,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77255030] [2019-10-15 01:15:20,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:15:20,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:20,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:15:20,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:15:20,434 INFO L87 Difference]: Start difference. First operand 1378 states and 1879 transitions. Second operand 17 states. [2019-10-15 01:15:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:21,318 INFO L93 Difference]: Finished difference Result 1885 states and 2555 transitions. [2019-10-15 01:15:21,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:15:21,319 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 176 [2019-10-15 01:15:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:21,331 INFO L225 Difference]: With dead ends: 1885 [2019-10-15 01:15:21,332 INFO L226 Difference]: Without dead ends: 1377 [2019-10-15 01:15:21,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2019-10-15 01:15:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1376. [2019-10-15 01:15:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-15 01:15:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1874 transitions. [2019-10-15 01:15:21,415 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1874 transitions. Word has length 176 [2019-10-15 01:15:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:21,416 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 1874 transitions. [2019-10-15 01:15:21,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:15:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1874 transitions. [2019-10-15 01:15:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:21,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:21,421 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:21,421 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1949627460, now seen corresponding path program 2 times [2019-10-15 01:15:21,422 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:21,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975337975] [2019-10-15 01:15:21,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:21,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:21,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:21,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975337975] [2019-10-15 01:15:21,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388333449] [2019-10-15 01:15:21,637 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:22,204 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:22,204 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:22,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:22,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:22,507 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:23,198 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:23,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:23,199 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298717900] [2019-10-15 01:15:23,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:23,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:23,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:23,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:23,202 INFO L87 Difference]: Start difference. First operand 1376 states and 1874 transitions. Second operand 14 states. [2019-10-15 01:15:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:25,204 INFO L93 Difference]: Finished difference Result 4100 states and 5621 transitions. [2019-10-15 01:15:25,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:25,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-10-15 01:15:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:25,244 INFO L225 Difference]: With dead ends: 4100 [2019-10-15 01:15:25,244 INFO L226 Difference]: Without dead ends: 4097 [2019-10-15 01:15:25,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2019-10-15 01:15:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 2996. [2019-10-15 01:15:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2996 states. [2019-10-15 01:15:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4162 transitions. [2019-10-15 01:15:25,607 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4162 transitions. Word has length 176 [2019-10-15 01:15:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:25,608 INFO L462 AbstractCegarLoop]: Abstraction has 2996 states and 4162 transitions. [2019-10-15 01:15:25,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4162 transitions. [2019-10-15 01:15:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:15:25,619 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:25,619 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:25,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:25,826 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1550152414, now seen corresponding path program 1 times [2019-10-15 01:15:25,828 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:25,828 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800998410] [2019-10-15 01:15:25,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:25,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:25,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:26,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800998410] [2019-10-15 01:15:26,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861314906] [2019-10-15 01:15:26,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:26,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:26,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:26,993 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:27,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:27,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:27,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:27,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:27,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949808885] [2019-10-15 01:15:27,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:27,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:27,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:27,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:27,405 INFO L87 Difference]: Start difference. First operand 2996 states and 4162 transitions. Second operand 7 states. [2019-10-15 01:15:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:29,257 INFO L93 Difference]: Finished difference Result 5965 states and 8295 transitions. [2019-10-15 01:15:29,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:29,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-10-15 01:15:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:29,288 INFO L225 Difference]: With dead ends: 5965 [2019-10-15 01:15:29,288 INFO L226 Difference]: Without dead ends: 3008 [2019-10-15 01:15:29,307 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2019-10-15 01:15:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2998. [2019-10-15 01:15:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2998 states. [2019-10-15 01:15:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4165 transitions. [2019-10-15 01:15:29,700 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4165 transitions. Word has length 179 [2019-10-15 01:15:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:29,701 INFO L462 AbstractCegarLoop]: Abstraction has 2998 states and 4165 transitions. [2019-10-15 01:15:29,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4165 transitions. [2019-10-15 01:15:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:15:29,716 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:29,717 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:29,936 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:29,937 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1621431323, now seen corresponding path program 1 times [2019-10-15 01:15:29,938 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:29,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31497267] [2019-10-15 01:15:29,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:30,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31497267] [2019-10-15 01:15:30,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514508069] [2019-10-15 01:15:30,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:30,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:15:31,006 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:31,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:31,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:31,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:31,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:31,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:15:31,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666326147] [2019-10-15 01:15:31,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:31,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:31,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:31,566 INFO L87 Difference]: Start difference. First operand 2998 states and 4165 transitions. Second operand 9 states. [2019-10-15 01:15:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:33,025 INFO L93 Difference]: Finished difference Result 5972 states and 8305 transitions. [2019-10-15 01:15:33,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:33,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 180 [2019-10-15 01:15:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:33,049 INFO L225 Difference]: With dead ends: 5972 [2019-10-15 01:15:33,049 INFO L226 Difference]: Without dead ends: 3016 [2019-10-15 01:15:33,064 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2019-10-15 01:15:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3014. [2019-10-15 01:15:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3014 states. [2019-10-15 01:15:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4181 transitions. [2019-10-15 01:15:33,290 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4181 transitions. Word has length 180 [2019-10-15 01:15:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:33,292 INFO L462 AbstractCegarLoop]: Abstraction has 3014 states and 4181 transitions. [2019-10-15 01:15:33,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4181 transitions. [2019-10-15 01:15:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:15:33,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:33,306 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:33,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:33,515 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash 886784686, now seen corresponding path program 1 times [2019-10-15 01:15:33,516 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:33,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758513668] [2019-10-15 01:15:33,517 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,517 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:33,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:33,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758513668] [2019-10-15 01:15:33,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665392295] [2019-10-15 01:15:33,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:34,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:34,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:34,389 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:34,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:34,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:34,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:34,950 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:34,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:15:34,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94323076] [2019-10-15 01:15:34,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:34,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:34,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:34,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:15:34,952 INFO L87 Difference]: Start difference. First operand 3014 states and 4181 transitions. Second operand 16 states. [2019-10-15 01:15:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:36,384 INFO L93 Difference]: Finished difference Result 5964 states and 8286 transitions. [2019-10-15 01:15:36,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:36,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-10-15 01:15:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:36,406 INFO L225 Difference]: With dead ends: 5964 [2019-10-15 01:15:36,406 INFO L226 Difference]: Without dead ends: 3038 [2019-10-15 01:15:36,417 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2019-10-15 01:15:36,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 3036. [2019-10-15 01:15:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3036 states. [2019-10-15 01:15:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 4206 transitions. [2019-10-15 01:15:36,577 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 4206 transitions. Word has length 181 [2019-10-15 01:15:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:36,578 INFO L462 AbstractCegarLoop]: Abstraction has 3036 states and 4206 transitions. [2019-10-15 01:15:36,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 4206 transitions. [2019-10-15 01:15:36,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:15:36,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:36,588 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:36,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:36,797 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:36,797 INFO L82 PathProgramCache]: Analyzing trace with hash 865387325, now seen corresponding path program 2 times [2019-10-15 01:15:36,797 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:36,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876264058] [2019-10-15 01:15:36,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:36,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:36,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876264058] [2019-10-15 01:15:36,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727566103] [2019-10-15 01:15:36,987 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 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 [2019-10-15 01:15:37,520 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:15:37,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:37,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:37,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:37,619 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:37,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:37,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:37,971 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:37,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 01:15:37,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175410408] [2019-10-15 01:15:37,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:15:37,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:37,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:15:37,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:37,974 INFO L87 Difference]: Start difference. First operand 3036 states and 4206 transitions. Second operand 11 states.