java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:27,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:27,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:27,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:27,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:27,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:27,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:27,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:27,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:27,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:27,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:27,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:27,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:27,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:27,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:27,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:27,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:27,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:27,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:27,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:27,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:27,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:27,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:27,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:27,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:27,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:27,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:27,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:27,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:27,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:27,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:27,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:27,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:27,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:27,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:27,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:27,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:27,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:27,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:27,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:27,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:27,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:27,467 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:27,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:27,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:27,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:27,470 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:27,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:27,471 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:27,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:27,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:27,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:27,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:27,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:27,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:27,473 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:27,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:27,474 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:27,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:27,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:27,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:27,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:27,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:27,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:27,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:27,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:27,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:27,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:27,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:27,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:27,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:27,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:27,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:27,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:27,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:27,842 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:27,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-10-13 21:15:27,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a64ce995/e0e9eafdc94c4db4a79a20def671092b/FLAG30a0af81a [2019-10-13 21:15:28,496 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:28,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-10-13 21:15:28,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a64ce995/e0e9eafdc94c4db4a79a20def671092b/FLAG30a0af81a [2019-10-13 21:15:28,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a64ce995/e0e9eafdc94c4db4a79a20def671092b [2019-10-13 21:15:28,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:28,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:28,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:28,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:28,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:28,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:28" (1/1) ... [2019-10-13 21:15:28,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f6a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:28, skipping insertion in model container [2019-10-13 21:15:28,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:28" (1/1) ... [2019-10-13 21:15:28,830 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:28,943 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:29,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:29,782 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:29,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:30,047 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:30,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30 WrapperNode [2019-10-13 21:15:30,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:30,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:30,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:30,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:30,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... [2019-10-13 21:15:30,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:30,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:30,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:30,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:30,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:30,348 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:30,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:15:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:30,369 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:30,369 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:30,370 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:30,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:30,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:30,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:30,401 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:30,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:30,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:30,404 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:30,405 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:30,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:30,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:32,434 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:32,434 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:32,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:32 BoogieIcfgContainer [2019-10-13 21:15:32,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:32,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:32,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:32,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:28" (1/3) ... [2019-10-13 21:15:32,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168cc564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:32, skipping insertion in model container [2019-10-13 21:15:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:30" (2/3) ... [2019-10-13 21:15:32,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168cc564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:32, skipping insertion in model container [2019-10-13 21:15:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:32" (3/3) ... [2019-10-13 21:15:32,445 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2019-10-13 21:15:32,455 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:32,466 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:32,477 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:32,525 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:32,525 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:32,526 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:32,526 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:32,526 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:32,526 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:32,526 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:32,526 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:32,566 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states. [2019-10-13 21:15:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:15:32,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:32,603 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:32,605 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:32,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:32,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1409604361, now seen corresponding path program 1 times [2019-10-13 21:15:32,620 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:32,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847176497] [2019-10-13 21:15:32,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:32,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:32,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:33,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847176497] [2019-10-13 21:15:33,309 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:33,309 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:33,309 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429276701] [2019-10-13 21:15:33,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:33,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:33,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:33,335 INFO L87 Difference]: Start difference. First operand 494 states. Second operand 2 states. [2019-10-13 21:15:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:33,414 INFO L93 Difference]: Finished difference Result 686 states and 905 transitions. [2019-10-13 21:15:33,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:33,417 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-10-13 21:15:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:33,454 INFO L225 Difference]: With dead ends: 686 [2019-10-13 21:15:33,455 INFO L226 Difference]: Without dead ends: 449 [2019-10-13 21:15:33,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-10-13 21:15:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2019-10-13 21:15:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-13 21:15:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 595 transitions. [2019-10-13 21:15:33,564 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 595 transitions. Word has length 170 [2019-10-13 21:15:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:33,566 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 595 transitions. [2019-10-13 21:15:33,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 595 transitions. [2019-10-13 21:15:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:15:33,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:33,571 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:33,572 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 295988568, now seen corresponding path program 1 times [2019-10-13 21:15:33,572 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:33,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397464238] [2019-10-13 21:15:33,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:33,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:33,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:33,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397464238] [2019-10-13 21:15:33,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:33,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:33,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013986263] [2019-10-13 21:15:33,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:33,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:33,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:33,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:33,873 INFO L87 Difference]: Start difference. First operand 449 states and 595 transitions. Second operand 3 states. [2019-10-13 21:15:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:33,955 INFO L93 Difference]: Finished difference Result 669 states and 870 transitions. [2019-10-13 21:15:33,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:33,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:15:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:33,960 INFO L225 Difference]: With dead ends: 669 [2019-10-13 21:15:33,960 INFO L226 Difference]: Without dead ends: 452 [2019-10-13 21:15:33,962 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-13 21:15:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2019-10-13 21:15:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-10-13 21:15:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 597 transitions. [2019-10-13 21:15:33,992 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 597 transitions. Word has length 171 [2019-10-13 21:15:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:33,993 INFO L462 AbstractCegarLoop]: Abstraction has 451 states and 597 transitions. [2019-10-13 21:15:33,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 597 transitions. [2019-10-13 21:15:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:15:33,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:33,997 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:33,997 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1559518136, now seen corresponding path program 1 times [2019-10-13 21:15:33,997 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:33,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399907367] [2019-10-13 21:15:33,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:33,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:33,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:34,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399907367] [2019-10-13 21:15:34,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:34,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:34,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072622973] [2019-10-13 21:15:34,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:34,265 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:34,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:34,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:34,266 INFO L87 Difference]: Start difference. First operand 451 states and 597 transitions. Second operand 3 states. [2019-10-13 21:15:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:34,333 INFO L93 Difference]: Finished difference Result 878 states and 1192 transitions. [2019-10-13 21:15:34,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:34,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-13 21:15:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:34,345 INFO L225 Difference]: With dead ends: 878 [2019-10-13 21:15:34,345 INFO L226 Difference]: Without dead ends: 492 [2019-10-13 21:15:34,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-13 21:15:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-13 21:15:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-13 21:15:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 666 transitions. [2019-10-13 21:15:34,401 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 666 transitions. Word has length 181 [2019-10-13 21:15:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:34,404 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 666 transitions. [2019-10-13 21:15:34,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 666 transitions. [2019-10-13 21:15:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:15:34,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:34,413 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:34,413 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1957887877, now seen corresponding path program 1 times [2019-10-13 21:15:34,414 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:34,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391462021] [2019-10-13 21:15:34,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:34,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:34,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:34,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391462021] [2019-10-13 21:15:34,640 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:34,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:34,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758022113] [2019-10-13 21:15:34,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:34,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:34,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:34,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:34,642 INFO L87 Difference]: Start difference. First operand 491 states and 666 transitions. Second operand 3 states. [2019-10-13 21:15:34,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:34,676 INFO L93 Difference]: Finished difference Result 995 states and 1394 transitions. [2019-10-13 21:15:34,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:34,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-10-13 21:15:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:34,681 INFO L225 Difference]: With dead ends: 995 [2019-10-13 21:15:34,682 INFO L226 Difference]: Without dead ends: 569 [2019-10-13 21:15:34,684 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-13 21:15:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 568. [2019-10-13 21:15:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 21:15:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 798 transitions. [2019-10-13 21:15:34,721 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 798 transitions. Word has length 182 [2019-10-13 21:15:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:34,722 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 798 transitions. [2019-10-13 21:15:34,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 798 transitions. [2019-10-13 21:15:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:15:34,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:34,729 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:34,730 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash 529348680, now seen corresponding path program 1 times [2019-10-13 21:15:34,730 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:34,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447512455] [2019-10-13 21:15:34,731 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:34,731 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:34,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:34,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447512455] [2019-10-13 21:15:34,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:34,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:34,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61219534] [2019-10-13 21:15:34,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:34,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:34,949 INFO L87 Difference]: Start difference. First operand 568 states and 798 transitions. Second operand 3 states. [2019-10-13 21:15:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:34,984 INFO L93 Difference]: Finished difference Result 1220 states and 1780 transitions. [2019-10-13 21:15:34,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:34,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-10-13 21:15:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:34,989 INFO L225 Difference]: With dead ends: 1220 [2019-10-13 21:15:34,990 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 21:15:34,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 21:15:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 716. [2019-10-13 21:15:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2019-10-13 21:15:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1050 transitions. [2019-10-13 21:15:35,026 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1050 transitions. Word has length 183 [2019-10-13 21:15:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:35,027 INFO L462 AbstractCegarLoop]: Abstraction has 716 states and 1050 transitions. [2019-10-13 21:15:35,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1050 transitions. [2019-10-13 21:15:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:15:35,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:35,035 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:35,036 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1690978181, now seen corresponding path program 1 times [2019-10-13 21:15:35,037 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:35,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441851023] [2019-10-13 21:15:35,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,038 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:35,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441851023] [2019-10-13 21:15:35,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:35,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:35,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014955721] [2019-10-13 21:15:35,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:35,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:35,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:35,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:35,232 INFO L87 Difference]: Start difference. First operand 716 states and 1050 transitions. Second operand 3 states. [2019-10-13 21:15:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:35,338 INFO L93 Difference]: Finished difference Result 1652 states and 2516 transitions. [2019-10-13 21:15:35,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:35,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-13 21:15:35,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:35,346 INFO L225 Difference]: With dead ends: 1652 [2019-10-13 21:15:35,346 INFO L226 Difference]: Without dead ends: 1001 [2019-10-13 21:15:35,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:35,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-13 21:15:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1000. [2019-10-13 21:15:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2019-10-13 21:15:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1530 transitions. [2019-10-13 21:15:35,401 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1530 transitions. Word has length 184 [2019-10-13 21:15:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:35,402 INFO L462 AbstractCegarLoop]: Abstraction has 1000 states and 1530 transitions. [2019-10-13 21:15:35,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1530 transitions. [2019-10-13 21:15:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:15:35,409 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:35,409 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:35,409 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:35,410 INFO L82 PathProgramCache]: Analyzing trace with hash -897317591, now seen corresponding path program 1 times [2019-10-13 21:15:35,410 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:35,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365577452] [2019-10-13 21:15:35,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:35,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365577452] [2019-10-13 21:15:35,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:35,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:15:35,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101406676] [2019-10-13 21:15:35,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:35,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:35,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:35,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:15:35,694 INFO L87 Difference]: Start difference. First operand 1000 states and 1530 transitions. Second operand 12 states. [2019-10-13 21:15:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:45,470 INFO L93 Difference]: Finished difference Result 2626 states and 3638 transitions. [2019-10-13 21:15:45,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:15:45,472 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 187 [2019-10-13 21:15:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:45,493 INFO L225 Difference]: With dead ends: 2626 [2019-10-13 21:15:45,494 INFO L226 Difference]: Without dead ends: 2205 [2019-10-13 21:15:45,504 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:15:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2019-10-13 21:15:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2186. [2019-10-13 21:15:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2186 states. [2019-10-13 21:15:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 3040 transitions. [2019-10-13 21:15:45,777 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 3040 transitions. Word has length 187 [2019-10-13 21:15:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:45,778 INFO L462 AbstractCegarLoop]: Abstraction has 2186 states and 3040 transitions. [2019-10-13 21:15:45,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 3040 transitions. [2019-10-13 21:15:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:15:45,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:45,789 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:45,790 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1638781378, now seen corresponding path program 1 times [2019-10-13 21:15:45,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:45,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300080791] [2019-10-13 21:15:45,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:45,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:45,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:46,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300080791] [2019-10-13 21:15:46,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:46,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:15:46,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471243682] [2019-10-13 21:15:46,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:46,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:46,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:46,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:46,286 INFO L87 Difference]: Start difference. First operand 2186 states and 3040 transitions. Second operand 16 states. [2019-10-13 21:15:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:46,779 INFO L93 Difference]: Finished difference Result 3248 states and 4400 transitions. [2019-10-13 21:15:46,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:15:46,780 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-10-13 21:15:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:46,795 INFO L225 Difference]: With dead ends: 3248 [2019-10-13 21:15:46,795 INFO L226 Difference]: Without dead ends: 1679 [2019-10-13 21:15:46,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:15:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2019-10-13 21:15:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1561. [2019-10-13 21:15:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2019-10-13 21:15:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2240 transitions. [2019-10-13 21:15:46,895 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2240 transitions. Word has length 188 [2019-10-13 21:15:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:46,898 INFO L462 AbstractCegarLoop]: Abstraction has 1561 states and 2240 transitions. [2019-10-13 21:15:46,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2240 transitions. [2019-10-13 21:15:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-13 21:15:46,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:46,909 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:46,909 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:46,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:46,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1262940159, now seen corresponding path program 1 times [2019-10-13 21:15:46,910 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:46,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781525675] [2019-10-13 21:15:46,910 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:46,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:46,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:15:49,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781525675] [2019-10-13 21:15:49,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200885968] [2019-10-13 21:15:49,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:49,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:49,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:15:50,255 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:50,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:50,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:50,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:51,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:51,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [55, 9] total 67 [2019-10-13 21:15:51,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170282079] [2019-10-13 21:15:51,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:51,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:51,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4248, Unknown=0, NotChecked=0, Total=4422 [2019-10-13 21:15:51,205 INFO L87 Difference]: Start difference. First operand 1561 states and 2240 transitions. Second operand 9 states. [2019-10-13 21:15:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:53,577 INFO L93 Difference]: Finished difference Result 3100 states and 4460 transitions. [2019-10-13 21:15:53,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:53,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-10-13 21:15:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:53,587 INFO L225 Difference]: With dead ends: 3100 [2019-10-13 21:15:53,588 INFO L226 Difference]: Without dead ends: 1575 [2019-10-13 21:15:53,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 382 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=201, Invalid=4629, Unknown=0, NotChecked=0, Total=4830 [2019-10-13 21:15:53,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2019-10-13 21:15:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2019-10-13 21:15:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2019-10-13 21:15:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2258 transitions. [2019-10-13 21:15:53,687 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2258 transitions. Word has length 197 [2019-10-13 21:15:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:53,687 INFO L462 AbstractCegarLoop]: Abstraction has 1575 states and 2258 transitions. [2019-10-13 21:15:53,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2258 transitions. [2019-10-13 21:15:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-13 21:15:53,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:53,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:53,901 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:53,901 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1259135260, now seen corresponding path program 1 times [2019-10-13 21:15:53,903 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:53,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360334159] [2019-10-13 21:15:53,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:53,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:53,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:15:55,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360334159] [2019-10-13 21:15:55,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121471372] [2019-10-13 21:15:55,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:56,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:56,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:15:56,793 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:57,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:57,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:57,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:57,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [53, 7] total 61 [2019-10-13 21:15:57,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288506092] [2019-10-13 21:15:57,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:57,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:57,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3511, Unknown=0, NotChecked=0, Total=3660 [2019-10-13 21:15:57,341 INFO L87 Difference]: Start difference. First operand 1575 states and 2258 transitions. Second operand 7 states. [2019-10-13 21:15:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:58,313 INFO L93 Difference]: Finished difference Result 3101 states and 4470 transitions. [2019-10-13 21:15:58,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:58,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2019-10-13 21:15:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:58,326 INFO L225 Difference]: With dead ends: 3101 [2019-10-13 21:15:58,327 INFO L226 Difference]: Without dead ends: 1577 [2019-10-13 21:15:58,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 389 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=167, Invalid=3739, Unknown=0, NotChecked=0, Total=3906 [2019-10-13 21:15:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2019-10-13 21:15:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1577. [2019-10-13 21:15:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2019-10-13 21:15:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2261 transitions. [2019-10-13 21:15:58,430 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2261 transitions. Word has length 198 [2019-10-13 21:15:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:58,431 INFO L462 AbstractCegarLoop]: Abstraction has 1577 states and 2261 transitions. [2019-10-13 21:15:58,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2261 transitions. [2019-10-13 21:15:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 21:15:58,437 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,438 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:58,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:58,655 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash -766244951, now seen corresponding path program 1 times [2019-10-13 21:15:58,657 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120642321] [2019-10-13 21:15:58,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:16:00,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120642321] [2019-10-13 21:16:00,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:00,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2019-10-13 21:16:00,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104591511] [2019-10-13 21:16:00,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-10-13 21:16:00,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-10-13 21:16:00,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2160, Unknown=0, NotChecked=0, Total=2256 [2019-10-13 21:16:00,319 INFO L87 Difference]: Start difference. First operand 1577 states and 2261 transitions. Second operand 48 states.