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_spec7_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:17:49,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:17:49,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:17:49,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:17:49,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:17:49,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:17:49,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:17:49,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:17:49,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:17:49,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:17:49,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:17:49,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:17:49,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:17:49,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:17:49,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:17:49,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:17:49,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:17:49,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:17:49,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:17:49,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:17:49,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:17:49,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:17:49,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:17:49,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:17:49,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:17:49,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:17:49,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:17:49,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:17:49,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:17:49,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:17:49,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:17:49,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:17:49,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:17:49,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:17:49,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:17:49,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:17:49,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:17:49,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:17:49,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:17:49,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:17:49,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:17:49,580 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 21:17:49,602 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:17:49,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:17:49,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:17:49,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:17:49,607 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:17:49,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:17:49,607 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:17:49,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:17:49,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:17:49,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:17:49,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:17:49,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:17:49,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:17:49,609 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:17:49,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:17:49,610 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:17:49,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:17:49,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:17:49,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:17:49,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:17:49,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:17:49,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:49,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:17:49,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:17:49,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:17:49,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:17:49,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:17:49,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:17:49,612 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 21:17:49,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:17:49,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:17:49,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:17:49,926 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:17:49,926 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:17:49,927 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2019-10-13 21:17:49,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca764a03e/9ba9a1a364524dd6a6db51bd8f852f1b/FLAG2db807084 [2019-10-13 21:17:50,725 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:17:50,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2019-10-13 21:17:50,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca764a03e/9ba9a1a364524dd6a6db51bd8f852f1b/FLAG2db807084 [2019-10-13 21:17:50,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca764a03e/9ba9a1a364524dd6a6db51bd8f852f1b [2019-10-13 21:17:50,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:17:50,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:17:50,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:50,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:17:50,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:17:50,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:50" (1/1) ... [2019-10-13 21:17:50,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362dc79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:50, skipping insertion in model container [2019-10-13 21:17:50,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:50" (1/1) ... [2019-10-13 21:17:50,889 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:17:50,958 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:17:51,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:51,742 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:17:51,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:52,063 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:17:52,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52 WrapperNode [2019-10-13 21:17:52,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:52,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:17:52,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:17:52,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:17:52,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (1/1) ... [2019-10-13 21:17:52,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:17:52,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:17:52,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:17:52,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:17:52,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (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 21:17:52,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:17:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:17:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:17:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:17:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:17:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:17:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:17:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:17:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:17:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:17:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:17:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:17:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:17:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:17:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:17:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:17:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:17:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:17:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:17:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:17:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:17:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:17:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:17:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:17:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:17:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:17:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:17:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:17:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:17:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:17:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:17:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:17:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:17:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:17:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:17:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:17:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:17:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:17:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:17:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:17:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:17:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:17:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:17:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:17:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:17:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:17:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:17:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:17:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:17:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:17:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:17:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptVerify_spec__1 [2019-10-13 21:17:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:17:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:17:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:17:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:17:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:17:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:17:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:17:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:17:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:17:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:17:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:17:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:17:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:17:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:17:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:17:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:17:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:17:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:17:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:17:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:17:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:17:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:17:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:17:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:17:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:17:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:17:52,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:17:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:17:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:17:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:17:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:17:52,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:17:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:17:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:17:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:17:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:17:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:17:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:17:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:17:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:17:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:17:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:17:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:17:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:17:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:17:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:17:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:17:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:17:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:17:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:17:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:17:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:17:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:17:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:17:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:17:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:17:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:17:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:17:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:17:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:17:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:17:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:17:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:17:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:17:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:17:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:17:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:17:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:17:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:17:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:17:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:17:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:17:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:17:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:17:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptVerify_spec__1 [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:17:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:17:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:17:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:17:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:17:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:17:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:17:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:17:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:17:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:17:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:17:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:17:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:17:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:17:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:17:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:17:54,654 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:17:54,654 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:17:54,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:54 BoogieIcfgContainer [2019-10-13 21:17:54,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:17:54,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:17:54,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:17:54,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:17:54,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:50" (1/3) ... [2019-10-13 21:17:54,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:54, skipping insertion in model container [2019-10-13 21:17:54,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:52" (2/3) ... [2019-10-13 21:17:54,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:54, skipping insertion in model container [2019-10-13 21:17:54,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:54" (3/3) ... [2019-10-13 21:17:54,667 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2019-10-13 21:17:54,678 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:17:54,689 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:17:54,702 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:17:54,741 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:17:54,742 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:17:54,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:17:54,742 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:17:54,742 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:17:54,742 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:17:54,742 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:17:54,742 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:17:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states. [2019-10-13 21:17:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:17:54,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:54,811 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:54,813 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash 791417093, now seen corresponding path program 1 times [2019-10-13 21:17:54,828 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:54,828 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440227877] [2019-10-13 21:17:54,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:54,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:54,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:55,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440227877] [2019-10-13 21:17:55,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:55,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:17:55,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637599263] [2019-10-13 21:17:55,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:17:55,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:17:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:55,559 INFO L87 Difference]: Start difference. First operand 505 states. Second operand 2 states. [2019-10-13 21:17:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:55,628 INFO L93 Difference]: Finished difference Result 707 states and 939 transitions. [2019-10-13 21:17:55,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:17:55,630 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 182 [2019-10-13 21:17:55,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:55,661 INFO L225 Difference]: With dead ends: 707 [2019-10-13 21:17:55,661 INFO L226 Difference]: Without dead ends: 454 [2019-10-13 21:17:55,671 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 21:17:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-10-13 21:17:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2019-10-13 21:17:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-10-13 21:17:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 605 transitions. [2019-10-13 21:17:55,781 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 605 transitions. Word has length 182 [2019-10-13 21:17:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:55,785 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 605 transitions. [2019-10-13 21:17:55,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:17:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 605 transitions. [2019-10-13 21:17:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:17:55,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:55,797 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:55,798 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash 34062624, now seen corresponding path program 1 times [2019-10-13 21:17:55,799 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:55,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077411617] [2019-10-13 21:17:55,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:55,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:55,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:56,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077411617] [2019-10-13 21:17:56,019 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:56,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:56,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15999112] [2019-10-13 21:17:56,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:56,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:56,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:56,028 INFO L87 Difference]: Start difference. First operand 454 states and 605 transitions. Second operand 3 states. [2019-10-13 21:17:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:56,118 INFO L93 Difference]: Finished difference Result 690 states and 904 transitions. [2019-10-13 21:17:56,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:56,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-10-13 21:17:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:56,126 INFO L225 Difference]: With dead ends: 690 [2019-10-13 21:17:56,126 INFO L226 Difference]: Without dead ends: 457 [2019-10-13 21:17:56,129 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 21:17:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-10-13 21:17:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 456. [2019-10-13 21:17:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2019-10-13 21:17:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 607 transitions. [2019-10-13 21:17:56,207 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 607 transitions. Word has length 183 [2019-10-13 21:17:56,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:56,207 INFO L462 AbstractCegarLoop]: Abstraction has 456 states and 607 transitions. [2019-10-13 21:17:56,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 607 transitions. [2019-10-13 21:17:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:17:56,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:56,213 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:56,213 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:56,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2105837044, now seen corresponding path program 1 times [2019-10-13 21:17:56,214 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:56,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350422199] [2019-10-13 21:17:56,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:56,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:56,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:56,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350422199] [2019-10-13 21:17:56,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:56,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:56,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38539943] [2019-10-13 21:17:56,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:56,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:56,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:56,453 INFO L87 Difference]: Start difference. First operand 456 states and 607 transitions. Second operand 3 states. [2019-10-13 21:17:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:56,501 INFO L93 Difference]: Finished difference Result 886 states and 1209 transitions. [2019-10-13 21:17:56,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:56,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-13 21:17:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:56,510 INFO L225 Difference]: With dead ends: 886 [2019-10-13 21:17:56,510 INFO L226 Difference]: Without dead ends: 495 [2019-10-13 21:17:56,515 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 21:17:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2019-10-13 21:17:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 494. [2019-10-13 21:17:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2019-10-13 21:17:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 673 transitions. [2019-10-13 21:17:56,557 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 673 transitions. Word has length 189 [2019-10-13 21:17:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:56,560 INFO L462 AbstractCegarLoop]: Abstraction has 494 states and 673 transitions. [2019-10-13 21:17:56,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 673 transitions. [2019-10-13 21:17:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:17:56,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:56,568 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:56,569 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash -89354053, now seen corresponding path program 1 times [2019-10-13 21:17:56,569 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:56,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76220261] [2019-10-13 21:17:56,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:56,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:56,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:17:57,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76220261] [2019-10-13 21:17:57,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:57,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:17:57,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627780074] [2019-10-13 21:17:57,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:17:57,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:57,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:17:57,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:17:57,191 INFO L87 Difference]: Start difference. First operand 494 states and 673 transitions. Second operand 19 states. [2019-10-13 21:18:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:01,517 INFO L93 Difference]: Finished difference Result 1666 states and 2267 transitions. [2019-10-13 21:18:01,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-10-13 21:18:01,518 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 190 [2019-10-13 21:18:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:01,528 INFO L225 Difference]: With dead ends: 1666 [2019-10-13 21:18:01,529 INFO L226 Difference]: Without dead ends: 1451 [2019-10-13 21:18:01,532 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=2385, Unknown=0, NotChecked=0, Total=2652 [2019-10-13 21:18:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2019-10-13 21:18:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1419. [2019-10-13 21:18:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2019-10-13 21:18:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1938 transitions. [2019-10-13 21:18:01,615 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1938 transitions. Word has length 190 [2019-10-13 21:18:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:01,616 INFO L462 AbstractCegarLoop]: Abstraction has 1419 states and 1938 transitions. [2019-10-13 21:18:01,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:18:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1938 transitions. [2019-10-13 21:18:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:18:01,623 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:01,623 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:01,623 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:01,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:01,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2067450055, now seen corresponding path program 1 times [2019-10-13 21:18:01,624 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:01,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853832036] [2019-10-13 21:18:01,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:01,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:01,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:01,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853832036] [2019-10-13 21:18:01,924 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:01,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:18:01,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330074884] [2019-10-13 21:18:01,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:01,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:01,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:01,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:18:01,927 INFO L87 Difference]: Start difference. First operand 1419 states and 1938 transitions. Second operand 11 states. [2019-10-13 21:18:02,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:02,351 INFO L93 Difference]: Finished difference Result 2414 states and 3259 transitions. [2019-10-13 21:18:02,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:18:02,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 191 [2019-10-13 21:18:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:02,363 INFO L225 Difference]: With dead ends: 2414 [2019-10-13 21:18:02,363 INFO L226 Difference]: Without dead ends: 1484 [2019-10-13 21:18:02,366 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:18:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2019-10-13 21:18:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1477. [2019-10-13 21:18:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2019-10-13 21:18:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2031 transitions. [2019-10-13 21:18:02,465 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2031 transitions. Word has length 191 [2019-10-13 21:18:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:02,468 INFO L462 AbstractCegarLoop]: Abstraction has 1477 states and 2031 transitions. [2019-10-13 21:18:02,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2031 transitions. [2019-10-13 21:18:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:18:02,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:02,475 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:02,475 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash -393480967, now seen corresponding path program 1 times [2019-10-13 21:18:02,476 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:02,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122127505] [2019-10-13 21:18:02,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:02,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:02,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:02,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122127505] [2019-10-13 21:18:02,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:02,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:18:02,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326231769] [2019-10-13 21:18:02,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:18:02,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:18:02,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:02,663 INFO L87 Difference]: Start difference. First operand 1477 states and 2031 transitions. Second operand 5 states. [2019-10-13 21:18:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:03,788 INFO L93 Difference]: Finished difference Result 3622 states and 4991 transitions. [2019-10-13 21:18:03,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:03,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2019-10-13 21:18:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:03,809 INFO L225 Difference]: With dead ends: 3622 [2019-10-13 21:18:03,810 INFO L226 Difference]: Without dead ends: 3145 [2019-10-13 21:18:03,814 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:18:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2019-10-13 21:18:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 3125. [2019-10-13 21:18:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2019-10-13 21:18:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4309 transitions. [2019-10-13 21:18:04,000 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4309 transitions. Word has length 191 [2019-10-13 21:18:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:04,001 INFO L462 AbstractCegarLoop]: Abstraction has 3125 states and 4309 transitions. [2019-10-13 21:18:04,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:18:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4309 transitions. [2019-10-13 21:18:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:18:04,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:04,010 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:04,010 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:04,011 INFO L82 PathProgramCache]: Analyzing trace with hash -373143592, now seen corresponding path program 1 times [2019-10-13 21:18:04,011 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:04,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927911053] [2019-10-13 21:18:04,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:04,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:04,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:04,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927911053] [2019-10-13 21:18:04,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:04,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:18:04,296 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162001761] [2019-10-13 21:18:04,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:04,297 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:04,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:04,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:18:04,298 INFO L87 Difference]: Start difference. First operand 3125 states and 4309 transitions. Second operand 7 states. [2019-10-13 21:18:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:05,973 INFO L93 Difference]: Finished difference Result 10144 states and 14343 transitions. [2019-10-13 21:18:05,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:18:05,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2019-10-13 21:18:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:06,036 INFO L225 Difference]: With dead ends: 10144 [2019-10-13 21:18:06,036 INFO L226 Difference]: Without dead ends: 7862 [2019-10-13 21:18:06,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:18:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7862 states. [2019-10-13 21:18:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7862 to 7822. [2019-10-13 21:18:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7822 states. [2019-10-13 21:18:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 10819 transitions. [2019-10-13 21:18:06,544 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 10819 transitions. Word has length 191 [2019-10-13 21:18:06,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:06,546 INFO L462 AbstractCegarLoop]: Abstraction has 7822 states and 10819 transitions. [2019-10-13 21:18:06,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 10819 transitions. [2019-10-13 21:18:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 21:18:06,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:06,555 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:06,556 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:06,556 INFO L82 PathProgramCache]: Analyzing trace with hash 960811411, now seen corresponding path program 1 times [2019-10-13 21:18:06,557 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:06,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605584610] [2019-10-13 21:18:06,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:06,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:06,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:07,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605584610] [2019-10-13 21:18:07,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:07,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:18:07,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147057396] [2019-10-13 21:18:07,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:18:07,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:07,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:18:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:18:07,125 INFO L87 Difference]: Start difference. First operand 7822 states and 10819 transitions. Second operand 26 states. [2019-10-13 21:18:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:08,417 INFO L93 Difference]: Finished difference Result 15767 states and 22449 transitions. [2019-10-13 21:18:08,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:18:08,417 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 192 [2019-10-13 21:18:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:08,482 INFO L225 Difference]: With dead ends: 15767 [2019-10-13 21:18:08,482 INFO L226 Difference]: Without dead ends: 7467 [2019-10-13 21:18:08,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:18:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7467 states. [2019-10-13 21:18:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7467 to 7197. [2019-10-13 21:18:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7197 states. [2019-10-13 21:18:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7197 states to 7197 states and 9976 transitions. [2019-10-13 21:18:08,883 INFO L78 Accepts]: Start accepts. Automaton has 7197 states and 9976 transitions. Word has length 192 [2019-10-13 21:18:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:08,884 INFO L462 AbstractCegarLoop]: Abstraction has 7197 states and 9976 transitions. [2019-10-13 21:18:08,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:18:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 7197 states and 9976 transitions. [2019-10-13 21:18:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:18:08,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:08,895 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:08,895 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1419526608, now seen corresponding path program 1 times [2019-10-13 21:18:08,896 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:08,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594682413] [2019-10-13 21:18:08,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:08,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:08,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:09,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594682413] [2019-10-13 21:18:09,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:09,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:18:09,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458801557] [2019-10-13 21:18:09,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:18:09,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:09,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:18:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:18:09,236 INFO L87 Difference]: Start difference. First operand 7197 states and 9976 transitions. Second operand 10 states. [2019-10-13 21:18:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:09,417 INFO L93 Difference]: Finished difference Result 7262 states and 10060 transitions. [2019-10-13 21:18:09,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:09,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 196 [2019-10-13 21:18:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:09,459 INFO L225 Difference]: With dead ends: 7262 [2019-10-13 21:18:09,459 INFO L226 Difference]: Without dead ends: 7187 [2019-10-13 21:18:09,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:18:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2019-10-13 21:18:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 7187. [2019-10-13 21:18:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7187 states. [2019-10-13 21:18:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7187 states to 7187 states and 9926 transitions. [2019-10-13 21:18:09,769 INFO L78 Accepts]: Start accepts. Automaton has 7187 states and 9926 transitions. Word has length 196 [2019-10-13 21:18:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:09,770 INFO L462 AbstractCegarLoop]: Abstraction has 7187 states and 9926 transitions. [2019-10-13 21:18:09,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:18:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7187 states and 9926 transitions. [2019-10-13 21:18:09,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:18:09,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:09,781 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:09,781 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:09,782 INFO L82 PathProgramCache]: Analyzing trace with hash -106874396, now seen corresponding path program 1 times [2019-10-13 21:18:09,782 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:09,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092439739] [2019-10-13 21:18:09,782 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:09,782 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:09,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:09,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092439739] [2019-10-13 21:18:09,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:09,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:18:09,918 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678273578] [2019-10-13 21:18:09,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:18:09,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:09,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:18:09,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:09,920 INFO L87 Difference]: Start difference. First operand 7187 states and 9926 transitions. Second operand 5 states. [2019-10-13 21:18:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:10,195 INFO L93 Difference]: Finished difference Result 13263 states and 18050 transitions. [2019-10-13 21:18:10,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:18:10,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2019-10-13 21:18:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:10,234 INFO L225 Difference]: With dead ends: 13263 [2019-10-13 21:18:10,234 INFO L226 Difference]: Without dead ends: 7392 [2019-10-13 21:18:10,257 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7392 states. [2019-10-13 21:18:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7392 to 7291. [2019-10-13 21:18:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7291 states. [2019-10-13 21:18:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 10066 transitions. [2019-10-13 21:18:10,580 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 10066 transitions. Word has length 201 [2019-10-13 21:18:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:10,580 INFO L462 AbstractCegarLoop]: Abstraction has 7291 states and 10066 transitions. [2019-10-13 21:18:10,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:18:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 10066 transitions. [2019-10-13 21:18:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:18:10,591 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:10,592 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:10,592 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:10,593 INFO L82 PathProgramCache]: Analyzing trace with hash -530905528, now seen corresponding path program 1 times [2019-10-13 21:18:10,593 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:10,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213885557] [2019-10-13 21:18:10,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:10,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:10,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:10,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213885557] [2019-10-13 21:18:10,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:10,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:18:10,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035638881] [2019-10-13 21:18:10,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:18:10,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:10,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:18:10,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:18:10,732 INFO L87 Difference]: Start difference. First operand 7291 states and 10066 transitions. Second operand 5 states. [2019-10-13 21:18:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:10,895 INFO L93 Difference]: Finished difference Result 9177 states and 12566 transitions. [2019-10-13 21:18:10,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:18:10,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2019-10-13 21:18:10,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:10,921 INFO L225 Difference]: With dead ends: 9177 [2019-10-13 21:18:10,922 INFO L226 Difference]: Without dead ends: 5691 [2019-10-13 21:18:10,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2019-10-13 21:18:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 5679. [2019-10-13 21:18:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5679 states. [2019-10-13 21:18:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7775 transitions. [2019-10-13 21:18:11,295 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7775 transitions. Word has length 203 [2019-10-13 21:18:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:11,296 INFO L462 AbstractCegarLoop]: Abstraction has 5679 states and 7775 transitions. [2019-10-13 21:18:11,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:18:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7775 transitions. [2019-10-13 21:18:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:18:11,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:11,305 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:11,306 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:11,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash -927665010, now seen corresponding path program 1 times [2019-10-13 21:18:11,306 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:11,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489387020] [2019-10-13 21:18:11,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:11,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:11,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:18:11,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489387020] [2019-10-13 21:18:11,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:11,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:11,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581501546] [2019-10-13 21:18:11,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:11,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:11,458 INFO L87 Difference]: Start difference. First operand 5679 states and 7775 transitions. Second operand 6 states. [2019-10-13 21:18:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:12,110 INFO L93 Difference]: Finished difference Result 15992 states and 21689 transitions. [2019-10-13 21:18:12,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:12,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-10-13 21:18:12,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:12,164 INFO L225 Difference]: With dead ends: 15992 [2019-10-13 21:18:12,164 INFO L226 Difference]: Without dead ends: 11287 [2019-10-13 21:18:12,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2019-10-13 21:18:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 11125. [2019-10-13 21:18:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11125 states. [2019-10-13 21:18:13,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 15225 transitions. [2019-10-13 21:18:13,207 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 15225 transitions. Word has length 201 [2019-10-13 21:18:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:13,208 INFO L462 AbstractCegarLoop]: Abstraction has 11125 states and 15225 transitions. [2019-10-13 21:18:13,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 15225 transitions. [2019-10-13 21:18:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:18:13,227 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:13,227 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:13,228 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:13,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1787182647, now seen corresponding path program 1 times [2019-10-13 21:18:13,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:13,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769925464] [2019-10-13 21:18:13,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:13,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:13,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:18:13,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769925464] [2019-10-13 21:18:13,409 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:13,409 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:18:13,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599345363] [2019-10-13 21:18:13,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:18:13,410 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:13,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:18:13,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:18:13,411 INFO L87 Difference]: Start difference. First operand 11125 states and 15225 transitions. Second operand 8 states. [2019-10-13 21:18:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:14,764 INFO L93 Difference]: Finished difference Result 32906 states and 45382 transitions. [2019-10-13 21:18:14,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:14,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2019-10-13 21:18:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:14,846 INFO L225 Difference]: With dead ends: 32906 [2019-10-13 21:18:14,846 INFO L226 Difference]: Without dead ends: 23146 [2019-10-13 21:18:14,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:18:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23146 states. [2019-10-13 21:18:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23146 to 22773. [2019-10-13 21:18:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22773 states. [2019-10-13 21:18:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 31350 transitions. [2019-10-13 21:18:15,954 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 31350 transitions. Word has length 221 [2019-10-13 21:18:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:15,955 INFO L462 AbstractCegarLoop]: Abstraction has 22773 states and 31350 transitions. [2019-10-13 21:18:15,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:18:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 31350 transitions. [2019-10-13 21:18:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:18:15,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:15,991 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:15,991 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash 880838603, now seen corresponding path program 1 times [2019-10-13 21:18:15,992 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:15,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821885459] [2019-10-13 21:18:15,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:15,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:15,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:18:16,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821885459] [2019-10-13 21:18:16,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:16,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:18:16,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662757934] [2019-10-13 21:18:16,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:16,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:16,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:16,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:18:16,231 INFO L87 Difference]: Start difference. First operand 22773 states and 31350 transitions. Second operand 15 states. [2019-10-13 21:18:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:19,979 INFO L93 Difference]: Finished difference Result 32120 states and 44500 transitions. [2019-10-13 21:18:19,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 21:18:19,980 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 221 [2019-10-13 21:18:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:20,082 INFO L225 Difference]: With dead ends: 32120 [2019-10-13 21:18:20,083 INFO L226 Difference]: Without dead ends: 24947 [2019-10-13 21:18:20,111 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24947 states. [2019-10-13 21:18:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24947 to 23709. [2019-10-13 21:18:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23709 states. [2019-10-13 21:18:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23709 states to 23709 states and 32854 transitions. [2019-10-13 21:18:21,095 INFO L78 Accepts]: Start accepts. Automaton has 23709 states and 32854 transitions. Word has length 221 [2019-10-13 21:18:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:21,095 INFO L462 AbstractCegarLoop]: Abstraction has 23709 states and 32854 transitions. [2019-10-13 21:18:21,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:18:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 23709 states and 32854 transitions. [2019-10-13 21:18:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:18:21,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:21,130 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:21,130 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:21,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1913967346, now seen corresponding path program 1 times [2019-10-13 21:18:21,131 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:21,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879000464] [2019-10-13 21:18:21,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:18:21,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879000464] [2019-10-13 21:18:21,320 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:21,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:18:21,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884020403] [2019-10-13 21:18:21,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:21,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:21,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:18:21,322 INFO L87 Difference]: Start difference. First operand 23709 states and 32854 transitions. Second operand 7 states.