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_spec8_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:25,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:25,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:25,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:25,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:25,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:25,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:25,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:25,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:25,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:25,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:25,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:25,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:25,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:25,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:25,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:25,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:25,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:25,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:25,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:25,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:25,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:25,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:25,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:25,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:25,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:25,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:25,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:25,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:25,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:25,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:25,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:25,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:25,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:25,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:25,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:25,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:25,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:25,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:25,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:25,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:25,259 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 21:18:25,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:25,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:25,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:25,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:25,276 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:25,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:25,277 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:25,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:25,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:25,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:25,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:25,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:25,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:25,278 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:25,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:25,279 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:25,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:25,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:25,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:25,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:25,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:25,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:25,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:25,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:25,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:25,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:25,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:25,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:25,281 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 21:18:25,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:25,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:25,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:25,637 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:25,638 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:25,639 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product26.cil.c [2019-10-13 21:18:25,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c19fcd7/73c539cfbc6e460aae258d2c80bba59d/FLAGf3cf136c8 [2019-10-13 21:18:26,363 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:26,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product26.cil.c [2019-10-13 21:18:26,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c19fcd7/73c539cfbc6e460aae258d2c80bba59d/FLAGf3cf136c8 [2019-10-13 21:18:26,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c19fcd7/73c539cfbc6e460aae258d2c80bba59d [2019-10-13 21:18:26,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:26,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:26,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:26,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:26,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:26,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:26" (1/1) ... [2019-10-13 21:18:26,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57150996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:26, skipping insertion in model container [2019-10-13 21:18:26,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:26" (1/1) ... [2019-10-13 21:18:26,581 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:26,669 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:27,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:27,465 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:27,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:27,740 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:27,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27 WrapperNode [2019-10-13 21:18:27,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:27,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:27,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:27,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:27,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:27,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:27,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:27,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:27,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (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 21:18:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:28,043 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:28,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:28,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:28,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:28,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:28,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:28,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:28,056 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:28,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:28,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:28,063 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:28,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:28,065 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:28,065 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:28,065 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:28,070 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:30,554 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:30,555 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:30,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:30 BoogieIcfgContainer [2019-10-13 21:18:30,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:30,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:30,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:30,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:30,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:26" (1/3) ... [2019-10-13 21:18:30,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b579c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:30, skipping insertion in model container [2019-10-13 21:18:30,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (2/3) ... [2019-10-13 21:18:30,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b579c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:30, skipping insertion in model container [2019-10-13 21:18:30,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:30" (3/3) ... [2019-10-13 21:18:30,569 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product26.cil.c [2019-10-13 21:18:30,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:30,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:30,602 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:30,635 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:30,635 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:30,635 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:30,635 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:30,636 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:30,636 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:30,636 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:30,636 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states. [2019-10-13 21:18:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:18:30,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:30,691 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:30,693 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1684965971, now seen corresponding path program 1 times [2019-10-13 21:18:30,710 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:30,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386145871] [2019-10-13 21:18:30,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:30,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:30,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:31,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386145871] [2019-10-13 21:18:31,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:31,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:31,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829075914] [2019-10-13 21:18:31,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:31,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:31,394 INFO L87 Difference]: Start difference. First operand 605 states. Second operand 2 states. [2019-10-13 21:18:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:31,479 INFO L93 Difference]: Finished difference Result 885 states and 1196 transitions. [2019-10-13 21:18:31,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:31,481 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:18:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:31,519 INFO L225 Difference]: With dead ends: 885 [2019-10-13 21:18:31,519 INFO L226 Difference]: Without dead ends: 576 [2019-10-13 21:18:31,532 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 21:18:31,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-10-13 21:18:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-10-13 21:18:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-10-13 21:18:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 784 transitions. [2019-10-13 21:18:31,644 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 784 transitions. Word has length 154 [2019-10-13 21:18:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,646 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 784 transitions. [2019-10-13 21:18:31,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 784 transitions. [2019-10-13 21:18:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:18:31,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,655 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:31,655 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1215749275, now seen corresponding path program 1 times [2019-10-13 21:18:31,656 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465024417] [2019-10-13 21:18:31,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:31,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465024417] [2019-10-13 21:18:31,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:31,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:31,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009605115] [2019-10-13 21:18:31,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:31,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:31,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:31,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,943 INFO L87 Difference]: Start difference. First operand 576 states and 784 transitions. Second operand 3 states. [2019-10-13 21:18:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,020 INFO L93 Difference]: Finished difference Result 868 states and 1162 transitions. [2019-10-13 21:18:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:18:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,029 INFO L225 Difference]: With dead ends: 868 [2019-10-13 21:18:32,029 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 21:18:32,036 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 21:18:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 21:18:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 578. [2019-10-13 21:18:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2019-10-13 21:18:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 786 transitions. [2019-10-13 21:18:32,080 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 786 transitions. Word has length 155 [2019-10-13 21:18:32,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,081 INFO L462 AbstractCegarLoop]: Abstraction has 578 states and 786 transitions. [2019-10-13 21:18:32,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:32,081 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 786 transitions. [2019-10-13 21:18:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:18:32,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,085 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:32,086 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1775436074, now seen corresponding path program 1 times [2019-10-13 21:18:32,086 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526001903] [2019-10-13 21:18:32,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:32,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526001903] [2019-10-13 21:18:32,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:32,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341952359] [2019-10-13 21:18:32,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:32,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:32,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,327 INFO L87 Difference]: Start difference. First operand 578 states and 786 transitions. Second operand 3 states. [2019-10-13 21:18:32,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,389 INFO L93 Difference]: Finished difference Result 1136 states and 1576 transitions. [2019-10-13 21:18:32,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-10-13 21:18:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,402 INFO L225 Difference]: With dead ends: 1136 [2019-10-13 21:18:32,403 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:18:32,409 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 21:18:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:18:32,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 622. [2019-10-13 21:18:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-13 21:18:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 861 transitions. [2019-10-13 21:18:32,444 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 861 transitions. Word has length 167 [2019-10-13 21:18:32,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,445 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 861 transitions. [2019-10-13 21:18:32,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 861 transitions. [2019-10-13 21:18:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:18:32,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,455 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:32,455 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash -309868390, now seen corresponding path program 1 times [2019-10-13 21:18:32,456 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132280665] [2019-10-13 21:18:32,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:32,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132280665] [2019-10-13 21:18:32,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:32,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209576381] [2019-10-13 21:18:32,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:32,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:32,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,633 INFO L87 Difference]: Start difference. First operand 622 states and 861 transitions. Second operand 3 states. [2019-10-13 21:18:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,686 INFO L93 Difference]: Finished difference Result 1265 states and 1796 transitions. [2019-10-13 21:18:32,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:18:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,696 INFO L225 Difference]: With dead ends: 1265 [2019-10-13 21:18:32,697 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 21:18:32,699 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 21:18:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 21:18:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 707. [2019-10-13 21:18:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-13 21:18:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1005 transitions. [2019-10-13 21:18:32,749 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1005 transitions. Word has length 168 [2019-10-13 21:18:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,749 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1005 transitions. [2019-10-13 21:18:32,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1005 transitions. [2019-10-13 21:18:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 21:18:32,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,757 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:32,757 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1506712822, now seen corresponding path program 1 times [2019-10-13 21:18:32,758 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307004844] [2019-10-13 21:18:32,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:33,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307004844] [2019-10-13 21:18:33,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:33,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:33,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849654384] [2019-10-13 21:18:33,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:33,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:33,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:33,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:33,106 INFO L87 Difference]: Start difference. First operand 707 states and 1005 transitions. Second operand 3 states. [2019-10-13 21:18:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:33,171 INFO L93 Difference]: Finished difference Result 1514 states and 2218 transitions. [2019-10-13 21:18:33,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:33,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-13 21:18:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:33,181 INFO L225 Difference]: With dead ends: 1514 [2019-10-13 21:18:33,181 INFO L226 Difference]: Without dead ends: 872 [2019-10-13 21:18:33,184 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 21:18:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2019-10-13 21:18:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 871. [2019-10-13 21:18:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2019-10-13 21:18:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1281 transitions. [2019-10-13 21:18:33,240 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1281 transitions. Word has length 169 [2019-10-13 21:18:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:33,241 INFO L462 AbstractCegarLoop]: Abstraction has 871 states and 1281 transitions. [2019-10-13 21:18:33,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1281 transitions. [2019-10-13 21:18:33,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:18:33,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,246 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:33,246 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,247 INFO L82 PathProgramCache]: Analyzing trace with hash 43767191, now seen corresponding path program 1 times [2019-10-13 21:18:33,247 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828208137] [2019-10-13 21:18:33,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:33,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828208137] [2019-10-13 21:18:33,438 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:33,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:33,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680627070] [2019-10-13 21:18:33,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:33,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:33,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:33,440 INFO L87 Difference]: Start difference. First operand 871 states and 1281 transitions. Second operand 3 states. [2019-10-13 21:18:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:33,492 INFO L93 Difference]: Finished difference Result 1261 states and 1810 transitions. [2019-10-13 21:18:33,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:33,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:18:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:33,501 INFO L225 Difference]: With dead ends: 1261 [2019-10-13 21:18:33,501 INFO L226 Difference]: Without dead ends: 985 [2019-10-13 21:18:33,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 21:18:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-10-13 21:18:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 984. [2019-10-13 21:18:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-10-13 21:18:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1443 transitions. [2019-10-13 21:18:33,562 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1443 transitions. Word has length 171 [2019-10-13 21:18:33,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:33,567 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1443 transitions. [2019-10-13 21:18:33,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1443 transitions. [2019-10-13 21:18:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-10-13 21:18:33,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,578 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:33,578 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1934700536, now seen corresponding path program 1 times [2019-10-13 21:18:33,579 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099368255] [2019-10-13 21:18:33,585 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,585 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:33,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099368255] [2019-10-13 21:18:33,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:33,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:33,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169920880] [2019-10-13 21:18:33,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:33,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:33,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:33,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:33,993 INFO L87 Difference]: Start difference. First operand 984 states and 1443 transitions. Second operand 6 states. [2019-10-13 21:18:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:34,773 INFO L93 Difference]: Finished difference Result 2297 states and 3345 transitions. [2019-10-13 21:18:34,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:34,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2019-10-13 21:18:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:34,787 INFO L225 Difference]: With dead ends: 2297 [2019-10-13 21:18:34,787 INFO L226 Difference]: Without dead ends: 1919 [2019-10-13 21:18:34,790 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 21:18:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2019-10-13 21:18:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1908. [2019-10-13 21:18:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2019-10-13 21:18:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2828 transitions. [2019-10-13 21:18:34,893 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2828 transitions. Word has length 306 [2019-10-13 21:18:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:34,893 INFO L462 AbstractCegarLoop]: Abstraction has 1908 states and 2828 transitions. [2019-10-13 21:18:34,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2828 transitions. [2019-10-13 21:18:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-10-13 21:18:34,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:34,908 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:34,908 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:34,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:34,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1767300773, now seen corresponding path program 1 times [2019-10-13 21:18:34,909 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:34,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198134408] [2019-10-13 21:18:34,909 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:34,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:34,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:35,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198134408] [2019-10-13 21:18:35,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:35,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:18:35,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023510366] [2019-10-13 21:18:35,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:35,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:35,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:35,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:35,256 INFO L87 Difference]: Start difference. First operand 1908 states and 2828 transitions. Second operand 9 states. [2019-10-13 21:18:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:35,672 INFO L93 Difference]: Finished difference Result 2661 states and 3825 transitions. [2019-10-13 21:18:35,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:35,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 307 [2019-10-13 21:18:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:35,690 INFO L225 Difference]: With dead ends: 2661 [2019-10-13 21:18:35,690 INFO L226 Difference]: Without dead ends: 1882 [2019-10-13 21:18:35,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:18:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2019-10-13 21:18:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1878. [2019-10-13 21:18:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2019-10-13 21:18:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2777 transitions. [2019-10-13 21:18:35,811 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2777 transitions. Word has length 307 [2019-10-13 21:18:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:35,812 INFO L462 AbstractCegarLoop]: Abstraction has 1878 states and 2777 transitions. [2019-10-13 21:18:35,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2777 transitions. [2019-10-13 21:18:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2019-10-13 21:18:35,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,861 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,862 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1453025090, now seen corresponding path program 1 times [2019-10-13 21:18:35,863 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015260259] [2019-10-13 21:18:35,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:36,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015260259] [2019-10-13 21:18:36,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162887607] [2019-10-13 21:18:36,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:37,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:18:37,534 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:38,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:38,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:38,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:38,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:38,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:38,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463765865] [2019-10-13 21:18:38,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:38,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:38,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:38,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:38,629 INFO L87 Difference]: Start difference. First operand 1878 states and 2777 transitions. Second operand 9 states. [2019-10-13 21:18:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:40,229 INFO L93 Difference]: Finished difference Result 3734 states and 5534 transitions. [2019-10-13 21:18:40,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:40,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 300 [2019-10-13 21:18:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:40,242 INFO L225 Difference]: With dead ends: 3734 [2019-10-13 21:18:40,242 INFO L226 Difference]: Without dead ends: 1892 [2019-10-13 21:18:40,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 589 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2019-10-13 21:18:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2019-10-13 21:18:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2019-10-13 21:18:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2795 transitions. [2019-10-13 21:18:40,359 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2795 transitions. Word has length 300 [2019-10-13 21:18:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:40,360 INFO L462 AbstractCegarLoop]: Abstraction has 1892 states and 2795 transitions. [2019-10-13 21:18:40,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2795 transitions. [2019-10-13 21:18:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-10-13 21:18:40,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:40,374 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:40,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:40,583 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:40,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1014814420, now seen corresponding path program 1 times [2019-10-13 21:18:40,585 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:40,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117975901] [2019-10-13 21:18:40,585 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:40,585 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:40,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:41,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117975901] [2019-10-13 21:18:41,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900005076] [2019-10-13 21:18:41,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:41,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:41,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:18:42,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:42,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:42,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:42,850 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:42,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:42,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032975096] [2019-10-13 21:18:42,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:42,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:42,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:42,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:42,853 INFO L87 Difference]: Start difference. First operand 1892 states and 2795 transitions. Second operand 7 states. [2019-10-13 21:18:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:44,674 INFO L93 Difference]: Finished difference Result 3737 states and 5547 transitions. [2019-10-13 21:18:44,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:44,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2019-10-13 21:18:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:44,688 INFO L225 Difference]: With dead ends: 3737 [2019-10-13 21:18:44,688 INFO L226 Difference]: Without dead ends: 1896 [2019-10-13 21:18:44,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 596 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2019-10-13 21:18:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1896. [2019-10-13 21:18:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2019-10-13 21:18:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2800 transitions. [2019-10-13 21:18:44,799 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2800 transitions. Word has length 301 [2019-10-13 21:18:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:44,800 INFO L462 AbstractCegarLoop]: Abstraction has 1896 states and 2800 transitions. [2019-10-13 21:18:44,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2800 transitions. [2019-10-13 21:18:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2019-10-13 21:18:44,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:44,814 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:45,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:45,023 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash 806246766, now seen corresponding path program 1 times [2019-10-13 21:18:45,025 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:45,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248923021] [2019-10-13 21:18:45,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:45,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:45,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248923021] [2019-10-13 21:18:45,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542150132] [2019-10-13 21:18:45,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:46,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:46,595 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:47,228 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 21:18:47,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:47,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:47,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:48,061 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:48,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:48,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462866315] [2019-10-13 21:18:48,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:48,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:48,063 INFO L87 Difference]: Start difference. First operand 1896 states and 2800 transitions. Second operand 16 states. [2019-10-13 21:18:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,290 INFO L93 Difference]: Finished difference Result 3743 states and 5542 transitions. [2019-10-13 21:18:50,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:50,291 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2019-10-13 21:18:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,304 INFO L225 Difference]: With dead ends: 3743 [2019-10-13 21:18:50,304 INFO L226 Difference]: Without dead ends: 1908 [2019-10-13 21:18:50,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 593 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:18:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2019-10-13 21:18:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2019-10-13 21:18:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-10-13 21:18:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2811 transitions. [2019-10-13 21:18:50,412 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2811 transitions. Word has length 302 [2019-10-13 21:18:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,412 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2811 transitions. [2019-10-13 21:18:50,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2811 transitions. [2019-10-13 21:18:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2019-10-13 21:18:50,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,421 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:50,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:50,630 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1589379152, now seen corresponding path program 2 times [2019-10-13 21:18:50,631 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:50,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17450870] [2019-10-13 21:18:50,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:18:51,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17450870] [2019-10-13 21:18:51,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649605329] [2019-10-13 21:18:51,224 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:51,953 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:51,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:51,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:51,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:52,308 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:52,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:53,191 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:53,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:18:53,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106903418] [2019-10-13 21:18:53,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:53,192 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:53,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:53,193 INFO L87 Difference]: Start difference. First operand 1906 states and 2811 transitions. Second operand 12 states. [2019-10-13 21:18:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:54,771 INFO L93 Difference]: Finished difference Result 3734 states and 5530 transitions. [2019-10-13 21:18:54,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:54,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 303 [2019-10-13 21:18:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:54,784 INFO L225 Difference]: With dead ends: 3734 [2019-10-13 21:18:54,784 INFO L226 Difference]: Without dead ends: 1908 [2019-10-13 21:18:54,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 600 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:54,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2019-10-13 21:18:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2019-10-13 21:18:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-10-13 21:18:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2810 transitions. [2019-10-13 21:18:54,870 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2810 transitions. Word has length 303 [2019-10-13 21:18:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:54,870 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2810 transitions. [2019-10-13 21:18:54,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2810 transitions. [2019-10-13 21:18:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2019-10-13 21:18:54,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:54,879 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:55,089 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:55,089 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash 309868026, now seen corresponding path program 3 times [2019-10-13 21:18:55,090 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:55,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107131513] [2019-10-13 21:18:55,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:55,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107131513] [2019-10-13 21:18:55,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531387355] [2019-10-13 21:18:55,584 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:56,288 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:56,288 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:56,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:56,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:56,614 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:57,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:57,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:57,540 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:57,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:18:57,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499682923] [2019-10-13 21:18:57,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:57,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:57,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:57,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:57,543 INFO L87 Difference]: Start difference. First operand 1906 states and 2810 transitions. Second operand 15 states.