/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:51:14,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:51:14,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:51:14,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:51:14,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:51:14,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:51:14,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:51:14,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:51:14,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:51:14,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:51:14,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:51:14,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:51:14,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:51:14,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:51:14,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:51:14,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:51:14,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:51:14,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:51:14,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:51:14,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:51:14,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:51:14,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:51:14,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:51:14,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:51:14,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:51:14,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:51:14,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:51:14,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:51:14,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:51:14,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:51:14,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:51:14,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:51:14,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:51:14,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:51:14,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:51:14,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:51:14,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:51:14,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:51:14,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:51:14,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:51:14,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:51:14,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:51:14,691 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:51:14,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:51:14,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:51:14,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:51:14,694 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:51:14,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:51:14,694 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:51:14,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:51:14,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:51:14,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:51:14,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:51:14,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:51:14,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:51:14,697 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:51:14,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:51:14,697 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:51:14,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:51:14,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:51:14,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:51:14,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:51:14,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:51:14,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:14,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:51:14,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:51:14,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:51:14,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:51:14,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:51:14,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:51:14,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:51:15,078 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:51:15,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:51:15,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:51:15,103 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:51:15,104 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:51:15,104 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c [2019-11-07 00:51:15,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7218d9268/85748ce1a710497781d5834916e8c6c5/FLAG08398ed2d [2019-11-07 00:51:15,809 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:51:15,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product32.cil.c [2019-11-07 00:51:15,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7218d9268/85748ce1a710497781d5834916e8c6c5/FLAG08398ed2d [2019-11-07 00:51:15,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7218d9268/85748ce1a710497781d5834916e8c6c5 [2019-11-07 00:51:16,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:51:16,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:51:16,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:16,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:51:16,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:51:16,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:15" (1/1) ... [2019-11-07 00:51:16,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f9ad01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:16, skipping insertion in model container [2019-11-07 00:51:16,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:15" (1/1) ... [2019-11-07 00:51:16,028 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:51:16,109 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:16,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:16,920 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:17,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:17,162 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:17,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17 WrapperNode [2019-11-07 00:51:17,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:17,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:17,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:17,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:17,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... [2019-11-07 00:51:17,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:17,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:17,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:17,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:17,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:17,433 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:51:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:17,434 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:51:17,435 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:17,435 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:51:17,436 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:51:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:51:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:17,449 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:17,449 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:17,449 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:17,449 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:17,449 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:51:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:51:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:51:17,452 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:51:17,452 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:17,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:17,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:51:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:51:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:51:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:51:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:51:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:51:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:51:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:51:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:17,491 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:19,925 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:19,925 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:19,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:19 BoogieIcfgContainer [2019-11-07 00:51:19,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:19,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:19,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:19,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:19,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:15" (1/3) ... [2019-11-07 00:51:19,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f44212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:19, skipping insertion in model container [2019-11-07 00:51:19,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:17" (2/3) ... [2019-11-07 00:51:19,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f44212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:19, skipping insertion in model container [2019-11-07 00:51:19,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:19" (3/3) ... [2019-11-07 00:51:19,937 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2019-11-07 00:51:19,948 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:19,959 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:19,973 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:20,012 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:20,012 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:20,012 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:20,015 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:20,015 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:20,015 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:20,015 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:20,015 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states. [2019-11-07 00:51:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:51:20,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:20,104 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:20,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:20,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1590085758, now seen corresponding path program 1 times [2019-11-07 00:51:20,122 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:20,123 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49440494] [2019-11-07 00:51:20,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:20,925 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49440494] [2019-11-07 00:51:20,926 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:20,926 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:20,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445611315] [2019-11-07 00:51:20,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:20,936 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:20,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:20,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:20,954 INFO L87 Difference]: Start difference. First operand 649 states. Second operand 2 states. [2019-11-07 00:51:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:21,062 INFO L93 Difference]: Finished difference Result 928 states and 1264 transitions. [2019-11-07 00:51:21,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:21,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2019-11-07 00:51:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:21,098 INFO L225 Difference]: With dead ends: 928 [2019-11-07 00:51:21,098 INFO L226 Difference]: Without dead ends: 592 [2019-11-07 00:51:21,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-11-07 00:51:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-11-07 00:51:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-11-07 00:51:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 808 transitions. [2019-11-07 00:51:21,255 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 808 transitions. Word has length 204 [2019-11-07 00:51:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:21,257 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 808 transitions. [2019-11-07 00:51:21,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 808 transitions. [2019-11-07 00:51:21,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:51:21,264 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:21,264 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:21,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1142276697, now seen corresponding path program 1 times [2019-11-07 00:51:21,265 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:21,265 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501374936] [2019-11-07 00:51:21,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:21,615 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501374936] [2019-11-07 00:51:21,616 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:21,616 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:21,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971934244] [2019-11-07 00:51:21,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:21,624 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:21,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:21,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:21,624 INFO L87 Difference]: Start difference. First operand 592 states and 808 transitions. Second operand 3 states. [2019-11-07 00:51:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:21,681 INFO L93 Difference]: Finished difference Result 911 states and 1224 transitions. [2019-11-07 00:51:21,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:21,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-11-07 00:51:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:21,692 INFO L225 Difference]: With dead ends: 911 [2019-11-07 00:51:21,692 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:51:21,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:51:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-11-07 00:51:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-11-07 00:51:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 810 transitions. [2019-11-07 00:51:21,742 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 810 transitions. Word has length 205 [2019-11-07 00:51:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:21,742 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 810 transitions. [2019-11-07 00:51:21,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 810 transitions. [2019-11-07 00:51:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-11-07 00:51:21,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:21,748 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:21,748 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:21,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1211358665, now seen corresponding path program 1 times [2019-11-07 00:51:21,749 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:21,749 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848857707] [2019-11-07 00:51:21,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:21,927 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848857707] [2019-11-07 00:51:21,927 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:21,927 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:21,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237959226] [2019-11-07 00:51:21,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:21,929 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:21,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:21,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:21,929 INFO L87 Difference]: Start difference. First operand 594 states and 810 transitions. Second operand 3 states. [2019-11-07 00:51:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:21,966 INFO L93 Difference]: Finished difference Result 1166 states and 1621 transitions. [2019-11-07 00:51:21,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:21,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2019-11-07 00:51:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:21,971 INFO L225 Difference]: With dead ends: 1166 [2019-11-07 00:51:21,971 INFO L226 Difference]: Without dead ends: 637 [2019-11-07 00:51:21,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-11-07 00:51:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-11-07 00:51:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-11-07 00:51:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 882 transitions. [2019-11-07 00:51:22,001 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 882 transitions. Word has length 215 [2019-11-07 00:51:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:22,001 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 882 transitions. [2019-11-07 00:51:22,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 882 transitions. [2019-11-07 00:51:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-07 00:51:22,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:22,007 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:22,008 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1000729200, now seen corresponding path program 1 times [2019-11-07 00:51:22,008 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:22,009 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177682278] [2019-11-07 00:51:22,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:22,405 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177682278] [2019-11-07 00:51:22,406 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:22,406 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:22,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274175305] [2019-11-07 00:51:22,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:22,408 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:22,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:22,409 INFO L87 Difference]: Start difference. First operand 636 states and 882 transitions. Second operand 3 states. [2019-11-07 00:51:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:22,461 INFO L93 Difference]: Finished difference Result 1289 states and 1832 transitions. [2019-11-07 00:51:22,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:22,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-11-07 00:51:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:22,470 INFO L225 Difference]: With dead ends: 1289 [2019-11-07 00:51:22,470 INFO L226 Difference]: Without dead ends: 718 [2019-11-07 00:51:22,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-11-07 00:51:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 717. [2019-11-07 00:51:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-07 00:51:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1020 transitions. [2019-11-07 00:51:22,527 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1020 transitions. Word has length 216 [2019-11-07 00:51:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:22,528 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 1020 transitions. [2019-11-07 00:51:22,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1020 transitions. [2019-11-07 00:51:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-07 00:51:22,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:22,538 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:22,538 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:22,539 INFO L82 PathProgramCache]: Analyzing trace with hash -562030519, now seen corresponding path program 1 times [2019-11-07 00:51:22,539 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:22,540 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428534701] [2019-11-07 00:51:22,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:22,779 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:22,780 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428534701] [2019-11-07 00:51:22,780 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:22,780 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:22,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52019791] [2019-11-07 00:51:22,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:22,782 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:22,783 INFO L87 Difference]: Start difference. First operand 717 states and 1020 transitions. Second operand 3 states. [2019-11-07 00:51:22,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:22,835 INFO L93 Difference]: Finished difference Result 1526 states and 2236 transitions. [2019-11-07 00:51:22,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:22,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2019-11-07 00:51:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:22,844 INFO L225 Difference]: With dead ends: 1526 [2019-11-07 00:51:22,844 INFO L226 Difference]: Without dead ends: 874 [2019-11-07 00:51:22,847 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-11-07 00:51:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2019-11-07 00:51:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2019-11-07 00:51:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1284 transitions. [2019-11-07 00:51:22,895 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1284 transitions. Word has length 217 [2019-11-07 00:51:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:22,895 INFO L462 AbstractCegarLoop]: Abstraction has 873 states and 1284 transitions. [2019-11-07 00:51:22,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1284 transitions. [2019-11-07 00:51:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-11-07 00:51:22,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:22,902 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:22,902 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1445317616, now seen corresponding path program 1 times [2019-11-07 00:51:22,903 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:22,903 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053240744] [2019-11-07 00:51:22,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:23,175 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053240744] [2019-11-07 00:51:23,176 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:23,176 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:23,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987737471] [2019-11-07 00:51:23,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:23,177 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:23,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:23,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:23,178 INFO L87 Difference]: Start difference. First operand 873 states and 1284 transitions. Second operand 3 states. [2019-11-07 00:51:23,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:23,233 INFO L93 Difference]: Finished difference Result 1982 states and 3008 transitions. [2019-11-07 00:51:23,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:23,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-11-07 00:51:23,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:23,241 INFO L225 Difference]: With dead ends: 1982 [2019-11-07 00:51:23,241 INFO L226 Difference]: Without dead ends: 1174 [2019-11-07 00:51:23,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-11-07 00:51:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1173. [2019-11-07 00:51:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-11-07 00:51:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1788 transitions. [2019-11-07 00:51:23,304 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1788 transitions. Word has length 218 [2019-11-07 00:51:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:23,306 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 1788 transitions. [2019-11-07 00:51:23,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1788 transitions. [2019-11-07 00:51:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:51:23,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:23,319 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:23,320 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1665385988, now seen corresponding path program 1 times [2019-11-07 00:51:23,321 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:23,321 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158915750] [2019-11-07 00:51:23,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:23,912 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158915750] [2019-11-07 00:51:23,912 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147266505] [2019-11-07 00:51:23,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:24,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:24,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:25,003 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:25,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:25,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:25,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:25,801 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:25,801 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:51:25,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612130022] [2019-11-07 00:51:25,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:51:25,803 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:51:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:25,805 INFO L87 Difference]: Start difference. First operand 1173 states and 1788 transitions. Second operand 9 states. [2019-11-07 00:51:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:27,413 INFO L93 Difference]: Finished difference Result 2324 states and 3556 transitions. [2019-11-07 00:51:27,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:51:27,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2019-11-07 00:51:27,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:27,421 INFO L225 Difference]: With dead ends: 2324 [2019-11-07 00:51:27,421 INFO L226 Difference]: Without dead ends: 1187 [2019-11-07 00:51:27,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:51:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2019-11-07 00:51:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1187. [2019-11-07 00:51:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2019-11-07 00:51:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1806 transitions. [2019-11-07 00:51:27,488 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1806 transitions. Word has length 221 [2019-11-07 00:51:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:27,488 INFO L462 AbstractCegarLoop]: Abstraction has 1187 states and 1806 transitions. [2019-11-07 00:51:27,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:51:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1806 transitions. [2019-11-07 00:51:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-07 00:51:27,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:27,497 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:27,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:27,713 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:27,713 INFO L82 PathProgramCache]: Analyzing trace with hash 676180806, now seen corresponding path program 1 times [2019-11-07 00:51:27,713 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:27,714 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829925764] [2019-11-07 00:51:27,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:29,176 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829925764] [2019-11-07 00:51:29,176 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948180067] [2019-11-07 00:51:29,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:29,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 3239 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:29,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:30,003 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:30,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:30,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:30,435 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:30,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:51:30,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500211528] [2019-11-07 00:51:30,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:30,437 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:30,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:30,438 INFO L87 Difference]: Start difference. First operand 1187 states and 1806 transitions. Second operand 7 states. [2019-11-07 00:51:32,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:32,081 INFO L93 Difference]: Finished difference Result 2325 states and 3566 transitions. [2019-11-07 00:51:32,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:32,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2019-11-07 00:51:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:32,090 INFO L225 Difference]: With dead ends: 2325 [2019-11-07 00:51:32,091 INFO L226 Difference]: Without dead ends: 1189 [2019-11-07 00:51:32,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 438 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:51:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-11-07 00:51:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2019-11-07 00:51:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2019-11-07 00:51:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1809 transitions. [2019-11-07 00:51:32,165 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1809 transitions. Word has length 222 [2019-11-07 00:51:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:32,166 INFO L462 AbstractCegarLoop]: Abstraction has 1189 states and 1809 transitions. [2019-11-07 00:51:32,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1809 transitions. [2019-11-07 00:51:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-11-07 00:51:32,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:32,178 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:32,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:32,397 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:32,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1469389812, now seen corresponding path program 1 times [2019-11-07 00:51:32,398 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:32,398 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841792488] [2019-11-07 00:51:32,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:33,255 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841792488] [2019-11-07 00:51:33,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507116797] [2019-11-07 00:51:33,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:34,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:34,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:34,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:34,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:34,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:34,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:35,112 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:35,112 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:51:35,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516161792] [2019-11-07 00:51:35,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:51:35,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:35,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:51:35,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:51:35,115 INFO L87 Difference]: Start difference. First operand 1189 states and 1809 transitions. Second operand 16 states. [2019-11-07 00:51:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:36,981 INFO L93 Difference]: Finished difference Result 2329 states and 3560 transitions. [2019-11-07 00:51:36,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:36,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 223 [2019-11-07 00:51:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:36,990 INFO L225 Difference]: With dead ends: 2329 [2019-11-07 00:51:36,991 INFO L226 Difference]: Without dead ends: 1201 [2019-11-07 00:51:36,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 435 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:51:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2019-11-07 00:51:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1199. [2019-11-07 00:51:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2019-11-07 00:51:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1820 transitions. [2019-11-07 00:51:37,050 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1820 transitions. Word has length 223 [2019-11-07 00:51:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:37,051 INFO L462 AbstractCegarLoop]: Abstraction has 1199 states and 1820 transitions. [2019-11-07 00:51:37,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:51:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1820 transitions. [2019-11-07 00:51:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-11-07 00:51:37,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:37,058 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:37,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:37,267 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1201266754, now seen corresponding path program 2 times [2019-11-07 00:51:37,268 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:37,268 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802011549] [2019-11-07 00:51:37,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:37,710 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802011549] [2019-11-07 00:51:37,710 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449543688] [2019-11-07 00:51:37,710 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:38,419 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:51:38,419 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:51:38,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:51:38,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:38,639 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:39,120 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:39,120 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:51:39,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122001520] [2019-11-07 00:51:39,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:51:39,122 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:39,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:51:39,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:51:39,123 INFO L87 Difference]: Start difference. First operand 1199 states and 1820 transitions. Second operand 14 states. [2019-11-07 00:51:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:41,921 INFO L93 Difference]: Finished difference Result 3832 states and 5883 transitions. [2019-11-07 00:51:41,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:51:41,922 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 224 [2019-11-07 00:51:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:41,952 INFO L225 Difference]: With dead ends: 3832 [2019-11-07 00:51:41,953 INFO L226 Difference]: Without dead ends: 3529 [2019-11-07 00:51:41,955 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:51:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2019-11-07 00:51:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3177. [2019-11-07 00:51:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2019-11-07 00:51:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5003 transitions. [2019-11-07 00:51:42,134 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5003 transitions. Word has length 224 [2019-11-07 00:51:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:42,135 INFO L462 AbstractCegarLoop]: Abstraction has 3177 states and 5003 transitions. [2019-11-07 00:51:42,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:51:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5003 transitions. [2019-11-07 00:51:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-11-07 00:51:42,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:42,155 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:42,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:42,362 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:42,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1182881275, now seen corresponding path program 1 times [2019-11-07 00:51:42,363 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:42,363 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275457607] [2019-11-07 00:51:42,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:42,681 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275457607] [2019-11-07 00:51:42,682 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906569064] [2019-11-07 00:51:42,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:43,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:43,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:43,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:43,850 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:43,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:44,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:44,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:44,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:51:44,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357804059] [2019-11-07 00:51:44,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:51:44,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:51:44,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:44,231 INFO L87 Difference]: Start difference. First operand 3177 states and 5003 transitions. Second operand 15 states. [2019-11-07 00:51:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:46,622 INFO L93 Difference]: Finished difference Result 6248 states and 9882 transitions. [2019-11-07 00:51:46,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:46,623 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 225 [2019-11-07 00:51:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:46,648 INFO L225 Difference]: With dead ends: 6248 [2019-11-07 00:51:46,649 INFO L226 Difference]: Without dead ends: 3183 [2019-11-07 00:51:46,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 439 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2019-11-07 00:51:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3177. [2019-11-07 00:51:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3177 states. [2019-11-07 00:51:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5001 transitions. [2019-11-07 00:51:46,821 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5001 transitions. Word has length 225 [2019-11-07 00:51:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:46,822 INFO L462 AbstractCegarLoop]: Abstraction has 3177 states and 5001 transitions. [2019-11-07 00:51:46,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:51:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5001 transitions. [2019-11-07 00:51:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-11-07 00:51:46,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:46,840 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:47,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:47,058 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:47,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1831514270, now seen corresponding path program 1 times [2019-11-07 00:51:47,058 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:47,059 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879556786] [2019-11-07 00:51:47,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:47,329 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879556786] [2019-11-07 00:51:47,329 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744324120] [2019-11-07 00:51:47,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:48,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:48,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:48,260 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:48,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:48,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:51:48,651 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:48,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:51:48,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345499767] [2019-11-07 00:51:48,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:51:48,652 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:48,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:51:48,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:51:48,653 INFO L87 Difference]: Start difference. First operand 3177 states and 5001 transitions. Second operand 12 states.