/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_spec27_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:15,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:15,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:15,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:15,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:15,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:15,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:15,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:15,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:15,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:15,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:15,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:15,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:15,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:15,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:15,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:15,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:15,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:15,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:15,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:15,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:15,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:15,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:15,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:15,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:15,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:15,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:15,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:15,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:15,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:15,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:15,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:15,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:15,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:15,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:15,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:15,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:15,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:15,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:15,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:15,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:15,418 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 00:49:15,441 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:15,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:15,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:15,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:15,446 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:15,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:15,446 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:15,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:15,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:15,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:15,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:15,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:15,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:15,448 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:15,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:15,448 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:15,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:15,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:15,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:15,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:15,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:15,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:15,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:15,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:15,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:15,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:15,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:15,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:15,452 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 00:49:15,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:15,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:15,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:15,760 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:15,760 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:15,761 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2019-11-07 00:49:15,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d405276d/ac2815a11fd646898786ad8fbd2dc5d7/FLAG245c69c3a [2019-11-07 00:49:16,477 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:16,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2019-11-07 00:49:16,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d405276d/ac2815a11fd646898786ad8fbd2dc5d7/FLAG245c69c3a [2019-11-07 00:49:16,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d405276d/ac2815a11fd646898786ad8fbd2dc5d7 [2019-11-07 00:49:16,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:16,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:16,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:16,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:16,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:16,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:16" (1/1) ... [2019-11-07 00:49:16,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4449781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:16, skipping insertion in model container [2019-11-07 00:49:16,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:16" (1/1) ... [2019-11-07 00:49:16,704 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:16,790 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:17,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:17,595 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:17,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:17,841 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:17,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17 WrapperNode [2019-11-07 00:49:17,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:17,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:17,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:17,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:17,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:17,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:17,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:17,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:17,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:17,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:17,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (1/1) ... [2019-11-07 00:49:18,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:18,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:18,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:18,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:18,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (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 00:49:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:49:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:49:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:49:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-11-07 00:49:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:49:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:49:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:18,123 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:18,124 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:18,125 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:18,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:18,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:18,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:49:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:18,133 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:18,157 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:49:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:49:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:49:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-11-07 00:49:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:18,166 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:18,167 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:18,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:18,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:20,360 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:20,360 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:20,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:20 BoogieIcfgContainer [2019-11-07 00:49:20,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:20,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:20,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:20,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:20,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:16" (1/3) ... [2019-11-07 00:49:20,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7cff72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:20, skipping insertion in model container [2019-11-07 00:49:20,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:17" (2/3) ... [2019-11-07 00:49:20,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7cff72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:20, skipping insertion in model container [2019-11-07 00:49:20,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:20" (3/3) ... [2019-11-07 00:49:20,376 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.c [2019-11-07 00:49:20,387 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:20,399 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:20,412 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:20,460 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:20,460 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:20,461 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:20,461 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:20,462 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:20,465 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:20,466 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:20,466 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2019-11-07 00:49:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:49:20,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:20,544 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:20,546 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:20,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1102474150, now seen corresponding path program 1 times [2019-11-07 00:49:20,566 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:20,566 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958635319] [2019-11-07 00:49:20,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:21,227 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958635319] [2019-11-07 00:49:21,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:21,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:21,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471720697] [2019-11-07 00:49:21,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:21,236 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:21,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:21,251 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 2 states. [2019-11-07 00:49:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:21,321 INFO L93 Difference]: Finished difference Result 806 states and 1096 transitions. [2019-11-07 00:49:21,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:21,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 188 [2019-11-07 00:49:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:21,359 INFO L225 Difference]: With dead ends: 806 [2019-11-07 00:49:21,359 INFO L226 Difference]: Without dead ends: 531 [2019-11-07 00:49:21,369 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 00:49:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2019-11-07 00:49:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2019-11-07 00:49:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-11-07 00:49:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 725 transitions. [2019-11-07 00:49:21,493 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 725 transitions. Word has length 188 [2019-11-07 00:49:21,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:21,495 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 725 transitions. [2019-11-07 00:49:21,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 725 transitions. [2019-11-07 00:49:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:49:21,502 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:21,503 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:21,503 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:21,504 INFO L82 PathProgramCache]: Analyzing trace with hash 581217033, now seen corresponding path program 1 times [2019-11-07 00:49:21,504 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:21,504 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257555179] [2019-11-07 00:49:21,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:21,815 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257555179] [2019-11-07 00:49:21,815 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:21,815 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:21,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994359419] [2019-11-07 00:49:21,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:21,829 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:21,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:21,836 INFO L87 Difference]: Start difference. First operand 531 states and 725 transitions. Second operand 3 states. [2019-11-07 00:49:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:21,904 INFO L93 Difference]: Finished difference Result 789 states and 1058 transitions. [2019-11-07 00:49:21,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:21,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-11-07 00:49:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:21,910 INFO L225 Difference]: With dead ends: 789 [2019-11-07 00:49:21,910 INFO L226 Difference]: Without dead ends: 534 [2019-11-07 00:49:21,914 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 00:49:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-11-07 00:49:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-11-07 00:49:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-11-07 00:49:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 727 transitions. [2019-11-07 00:49:21,942 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 727 transitions. Word has length 189 [2019-11-07 00:49:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:21,943 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 727 transitions. [2019-11-07 00:49:21,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 727 transitions. [2019-11-07 00:49:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 00:49:21,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:21,990 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:21,990 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash -762170887, now seen corresponding path program 1 times [2019-11-07 00:49:21,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:21,991 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969852226] [2019-11-07 00:49:21,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:22,157 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969852226] [2019-11-07 00:49:22,157 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:22,157 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:22,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250286771] [2019-11-07 00:49:22,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:22,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:22,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:22,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:22,163 INFO L87 Difference]: Start difference. First operand 533 states and 727 transitions. Second operand 3 states. [2019-11-07 00:49:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:22,225 INFO L93 Difference]: Finished difference Result 1044 states and 1455 transitions. [2019-11-07 00:49:22,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:22,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-11-07 00:49:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:22,236 INFO L225 Difference]: With dead ends: 1044 [2019-11-07 00:49:22,236 INFO L226 Difference]: Without dead ends: 576 [2019-11-07 00:49:22,240 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 00:49:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-07 00:49:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 575. [2019-11-07 00:49:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2019-11-07 00:49:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 799 transitions. [2019-11-07 00:49:22,300 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 799 transitions. Word has length 199 [2019-11-07 00:49:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:22,302 INFO L462 AbstractCegarLoop]: Abstraction has 575 states and 799 transitions. [2019-11-07 00:49:22,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 799 transitions. [2019-11-07 00:49:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:49:22,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:22,309 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:22,310 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2111399604, now seen corresponding path program 1 times [2019-11-07 00:49:22,311 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:22,311 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506342866] [2019-11-07 00:49:22,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:22,552 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506342866] [2019-11-07 00:49:22,552 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:22,552 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:22,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390905547] [2019-11-07 00:49:22,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:22,554 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:22,555 INFO L87 Difference]: Start difference. First operand 575 states and 799 transitions. Second operand 3 states. [2019-11-07 00:49:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:22,602 INFO L93 Difference]: Finished difference Result 1167 states and 1666 transitions. [2019-11-07 00:49:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:22,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2019-11-07 00:49:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:22,613 INFO L225 Difference]: With dead ends: 1167 [2019-11-07 00:49:22,613 INFO L226 Difference]: Without dead ends: 657 [2019-11-07 00:49:22,616 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 00:49:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-11-07 00:49:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 656. [2019-11-07 00:49:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-11-07 00:49:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 937 transitions. [2019-11-07 00:49:22,721 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 937 transitions. Word has length 200 [2019-11-07 00:49:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:22,722 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 937 transitions. [2019-11-07 00:49:22,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 937 transitions. [2019-11-07 00:49:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-07 00:49:22,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:22,732 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:22,732 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1097400825, now seen corresponding path program 1 times [2019-11-07 00:49:22,733 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:22,734 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658348625] [2019-11-07 00:49:22,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:22,962 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658348625] [2019-11-07 00:49:22,962 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:22,962 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:22,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465726847] [2019-11-07 00:49:22,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:22,964 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:22,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:22,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:22,965 INFO L87 Difference]: Start difference. First operand 656 states and 937 transitions. Second operand 3 states. [2019-11-07 00:49:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:23,008 INFO L93 Difference]: Finished difference Result 1404 states and 2070 transitions. [2019-11-07 00:49:23,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:23,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-11-07 00:49:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:23,015 INFO L225 Difference]: With dead ends: 1404 [2019-11-07 00:49:23,016 INFO L226 Difference]: Without dead ends: 813 [2019-11-07 00:49:23,018 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 00:49:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-11-07 00:49:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 812. [2019-11-07 00:49:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2019-11-07 00:49:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1201 transitions. [2019-11-07 00:49:23,060 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1201 transitions. Word has length 201 [2019-11-07 00:49:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:23,060 INFO L462 AbstractCegarLoop]: Abstraction has 812 states and 1201 transitions. [2019-11-07 00:49:23,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1201 transitions. [2019-11-07 00:49:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-07 00:49:23,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:23,067 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:23,067 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:23,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1333357236, now seen corresponding path program 1 times [2019-11-07 00:49:23,068 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:23,068 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140820241] [2019-11-07 00:49:23,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:23,316 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140820241] [2019-11-07 00:49:23,317 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:23,317 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:23,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428544085] [2019-11-07 00:49:23,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:23,318 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:23,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:23,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:23,319 INFO L87 Difference]: Start difference. First operand 812 states and 1201 transitions. Second operand 3 states. [2019-11-07 00:49:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:23,383 INFO L93 Difference]: Finished difference Result 1860 states and 2842 transitions. [2019-11-07 00:49:23,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:23,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-11-07 00:49:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:23,394 INFO L225 Difference]: With dead ends: 1860 [2019-11-07 00:49:23,395 INFO L226 Difference]: Without dead ends: 1113 [2019-11-07 00:49:23,399 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 00:49:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2019-11-07 00:49:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1112. [2019-11-07 00:49:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-11-07 00:49:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1705 transitions. [2019-11-07 00:49:23,464 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1705 transitions. Word has length 202 [2019-11-07 00:49:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:23,466 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1705 transitions. [2019-11-07 00:49:23,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1705 transitions. [2019-11-07 00:49:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:49:23,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:23,473 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:23,474 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1889313127, now seen corresponding path program 1 times [2019-11-07 00:49:23,474 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:23,475 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151796990] [2019-11-07 00:49:23,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:23,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151796990] [2019-11-07 00:49:23,699 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:23,699 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:49:23,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227914366] [2019-11-07 00:49:23,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:49:23,700 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:23,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:49:23,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:23,701 INFO L87 Difference]: Start difference. First operand 1112 states and 1705 transitions. Second operand 8 states. [2019-11-07 00:49:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:23,786 INFO L93 Difference]: Finished difference Result 1354 states and 2026 transitions. [2019-11-07 00:49:23,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:49:23,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2019-11-07 00:49:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:23,796 INFO L225 Difference]: With dead ends: 1354 [2019-11-07 00:49:23,796 INFO L226 Difference]: Without dead ends: 1112 [2019-11-07 00:49:23,798 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-11-07 00:49:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-11-07 00:49:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-11-07 00:49:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1704 transitions. [2019-11-07 00:49:23,866 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1704 transitions. Word has length 205 [2019-11-07 00:49:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:23,868 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1704 transitions. [2019-11-07 00:49:23,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:49:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1704 transitions. [2019-11-07 00:49:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:49:23,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:23,879 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:23,879 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:23,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1379903379, now seen corresponding path program 1 times [2019-11-07 00:49:23,881 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:23,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769808834] [2019-11-07 00:49:23,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:24,275 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769808834] [2019-11-07 00:49:24,275 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:24,276 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:49:24,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000465190] [2019-11-07 00:49:24,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:24,277 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:24,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:24,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:49:24,278 INFO L87 Difference]: Start difference. First operand 1112 states and 1704 transitions. Second operand 7 states. [2019-11-07 00:49:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:27,080 INFO L93 Difference]: Finished difference Result 1625 states and 2384 transitions. [2019-11-07 00:49:27,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:49:27,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2019-11-07 00:49:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:27,091 INFO L225 Difference]: With dead ends: 1625 [2019-11-07 00:49:27,091 INFO L226 Difference]: Without dead ends: 1379 [2019-11-07 00:49:27,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:49:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-11-07 00:49:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1370. [2019-11-07 00:49:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2019-11-07 00:49:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2044 transitions. [2019-11-07 00:49:27,199 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2044 transitions. Word has length 212 [2019-11-07 00:49:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:27,202 INFO L462 AbstractCegarLoop]: Abstraction has 1370 states and 2044 transitions. [2019-11-07 00:49:27,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:27,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2044 transitions. [2019-11-07 00:49:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 00:49:27,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:27,210 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:27,211 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1428432739, now seen corresponding path program 1 times [2019-11-07 00:49:27,211 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:27,212 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636090442] [2019-11-07 00:49:27,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:27,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636090442] [2019-11-07 00:49:27,878 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:27,878 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:49:27,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147101746] [2019-11-07 00:49:27,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:49:27,880 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:49:27,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:49:27,881 INFO L87 Difference]: Start difference. First operand 1370 states and 2044 transitions. Second operand 26 states. [2019-11-07 00:49:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:28,663 INFO L93 Difference]: Finished difference Result 2001 states and 2897 transitions. [2019-11-07 00:49:28,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:49:28,664 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 213 [2019-11-07 00:49:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:28,673 INFO L225 Difference]: With dead ends: 2001 [2019-11-07 00:49:28,673 INFO L226 Difference]: Without dead ends: 1493 [2019-11-07 00:49:28,676 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:49:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2019-11-07 00:49:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1488. [2019-11-07 00:49:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2019-11-07 00:49:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2195 transitions. [2019-11-07 00:49:28,745 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2195 transitions. Word has length 213 [2019-11-07 00:49:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:28,745 INFO L462 AbstractCegarLoop]: Abstraction has 1488 states and 2195 transitions. [2019-11-07 00:49:28,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:49:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2195 transitions. [2019-11-07 00:49:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-11-07 00:49:28,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:28,754 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:28,754 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1536275324, now seen corresponding path program 1 times [2019-11-07 00:49:28,755 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:28,755 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054915264] [2019-11-07 00:49:28,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:49:29,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054915264] [2019-11-07 00:49:29,019 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:29,019 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:49:29,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244554886] [2019-11-07 00:49:29,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:49:29,024 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:29,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:49:29,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:29,026 INFO L87 Difference]: Start difference. First operand 1488 states and 2195 transitions. Second operand 8 states. [2019-11-07 00:49:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:33,988 INFO L93 Difference]: Finished difference Result 3380 states and 4772 transitions. [2019-11-07 00:49:33,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:49:33,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2019-11-07 00:49:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:34,023 INFO L225 Difference]: With dead ends: 3380 [2019-11-07 00:49:34,023 INFO L226 Difference]: Without dead ends: 2778 [2019-11-07 00:49:34,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:49:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2019-11-07 00:49:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2766. [2019-11-07 00:49:34,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2019-11-07 00:49:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3927 transitions. [2019-11-07 00:49:34,189 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3927 transitions. Word has length 244 [2019-11-07 00:49:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:34,190 INFO L462 AbstractCegarLoop]: Abstraction has 2766 states and 3927 transitions. [2019-11-07 00:49:34,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:49:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3927 transitions. [2019-11-07 00:49:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-11-07 00:49:34,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:34,205 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:34,205 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1613499385, now seen corresponding path program 1 times [2019-11-07 00:49:34,206 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:34,206 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477348704] [2019-11-07 00:49:34,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:49:34,643 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477348704] [2019-11-07 00:49:34,643 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:34,643 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-11-07 00:49:34,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424765419] [2019-11-07 00:49:34,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 00:49:34,644 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:34,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 00:49:34,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:49:34,645 INFO L87 Difference]: Start difference. First operand 2766 states and 3927 transitions. Second operand 20 states. [2019-11-07 00:49:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:35,217 INFO L93 Difference]: Finished difference Result 4306 states and 5976 transitions. [2019-11-07 00:49:35,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 00:49:35,218 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 245 [2019-11-07 00:49:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:35,234 INFO L225 Difference]: With dead ends: 4306 [2019-11-07 00:49:35,235 INFO L226 Difference]: Without dead ends: 2470 [2019-11-07 00:49:35,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:49:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2019-11-07 00:49:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2460. [2019-11-07 00:49:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2460 states. [2019-11-07 00:49:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3505 transitions. [2019-11-07 00:49:35,354 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3505 transitions. Word has length 245 [2019-11-07 00:49:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:35,355 INFO L462 AbstractCegarLoop]: Abstraction has 2460 states and 3505 transitions. [2019-11-07 00:49:35,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 00:49:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3505 transitions. [2019-11-07 00:49:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-11-07 00:49:35,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:35,365 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:35,366 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:35,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:35,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1147475467, now seen corresponding path program 1 times [2019-11-07 00:49:35,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:35,367 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34597217] [2019-11-07 00:49:35,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:35,634 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34597217] [2019-11-07 00:49:35,634 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969563793] [2019-11-07 00:49:35,634 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 00:49:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:36,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:36,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:49:36,608 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:37,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:37,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:37,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:37,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:37,324 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:49:37,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696770761] [2019-11-07 00:49:37,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:49:37,325 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:37,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:49:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:49:37,325 INFO L87 Difference]: Start difference. First operand 2460 states and 3505 transitions. Second operand 9 states. [2019-11-07 00:49:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:38,933 INFO L93 Difference]: Finished difference Result 4898 states and 6990 transitions. [2019-11-07 00:49:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:49:38,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2019-11-07 00:49:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:38,948 INFO L225 Difference]: With dead ends: 4898 [2019-11-07 00:49:38,949 INFO L226 Difference]: Without dead ends: 2474 [2019-11-07 00:49:38,958 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 494 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:49:38,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2019-11-07 00:49:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2474. [2019-11-07 00:49:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2019-11-07 00:49:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3523 transitions. [2019-11-07 00:49:39,073 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3523 transitions. Word has length 254 [2019-11-07 00:49:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:39,073 INFO L462 AbstractCegarLoop]: Abstraction has 2474 states and 3523 transitions. [2019-11-07 00:49:39,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:49:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3523 transitions. [2019-11-07 00:49:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-11-07 00:49:39,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:39,081 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:39,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:39,291 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash 990010452, now seen corresponding path program 1 times [2019-11-07 00:49:39,291 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:39,292 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366973004] [2019-11-07 00:49:39,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:39,522 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366973004] [2019-11-07 00:49:39,522 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959963740] [2019-11-07 00:49:39,522 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 00:49:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:40,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:40,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:49:40,225 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:40,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:40,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:40,715 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:40,715 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:49:40,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959610696] [2019-11-07 00:49:40,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:40,717 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:40,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:40,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:49:40,717 INFO L87 Difference]: Start difference. First operand 2474 states and 3523 transitions. Second operand 7 states. [2019-11-07 00:49:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:42,099 INFO L93 Difference]: Finished difference Result 4899 states and 7000 transitions. [2019-11-07 00:49:42,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:49:42,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2019-11-07 00:49:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:42,120 INFO L225 Difference]: With dead ends: 4899 [2019-11-07 00:49:42,120 INFO L226 Difference]: Without dead ends: 2476 [2019-11-07 00:49:42,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 501 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:49:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2019-11-07 00:49:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2019-11-07 00:49:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2019-11-07 00:49:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3526 transitions. [2019-11-07 00:49:42,232 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3526 transitions. Word has length 255 [2019-11-07 00:49:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:42,233 INFO L462 AbstractCegarLoop]: Abstraction has 2476 states and 3526 transitions. [2019-11-07 00:49:42,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3526 transitions. [2019-11-07 00:49:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-11-07 00:49:42,242 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:42,242 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:42,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:42,456 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 941903647, now seen corresponding path program 1 times [2019-11-07 00:49:42,457 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:42,457 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962915942] [2019-11-07 00:49:42,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:42,645 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962915942] [2019-11-07 00:49:42,646 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490089540] [2019-11-07 00:49:42,646 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 00:49:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:43,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:43,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:43,417 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:43,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:43,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:43,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:44,022 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:49:44,022 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:49:44,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309820532] [2019-11-07 00:49:44,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:49:44,025 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:49:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:49:44,026 INFO L87 Difference]: Start difference. First operand 2476 states and 3526 transitions. Second operand 16 states. [2019-11-07 00:49:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:46,435 INFO L93 Difference]: Finished difference Result 4903 states and 6994 transitions. [2019-11-07 00:49:46,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:49:46,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 256 [2019-11-07 00:49:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:46,452 INFO L225 Difference]: With dead ends: 4903 [2019-11-07 00:49:46,452 INFO L226 Difference]: Without dead ends: 2488 [2019-11-07 00:49:46,464 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 498 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:49:46,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2019-11-07 00:49:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2486. [2019-11-07 00:49:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2019-11-07 00:49:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3537 transitions. [2019-11-07 00:49:46,586 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3537 transitions. Word has length 256 [2019-11-07 00:49:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:46,587 INFO L462 AbstractCegarLoop]: Abstraction has 2486 states and 3537 transitions. [2019-11-07 00:49:46,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:49:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3537 transitions. [2019-11-07 00:49:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-11-07 00:49:46,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:46,595 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:46,803 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:46,804 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:46,804 INFO L82 PathProgramCache]: Analyzing trace with hash 115213538, now seen corresponding path program 2 times [2019-11-07 00:49:46,804 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:46,805 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708330086] [2019-11-07 00:49:46,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:47,413 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708330086] [2019-11-07 00:49:47,413 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615833629] [2019-11-07 00:49:47,413 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 00:49:48,078 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:49:48,078 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:49:48,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:48,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:48,339 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:48,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:48,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:49:48,891 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:49:48,891 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-11-07 00:49:48,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308894714] [2019-11-07 00:49:48,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:49:48,892 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:48,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:49:48,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:49:48,893 INFO L87 Difference]: Start difference. First operand 2486 states and 3537 transitions. Second operand 12 states.