java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:18,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:18,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:18,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:18,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:18,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:18,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:18,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:18,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:18,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:18,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:18,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:18,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:18,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:18,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:18,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:18,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:18,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:18,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:18,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:18,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:18,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:18,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:18,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:18,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:18,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:18,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:18,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:18,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:18,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:18,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:18,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:18,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:18,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:18,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:18,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:18,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:18,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:18,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:18,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:18,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:18,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:18,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:18,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:18,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:18,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:18,721 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:18,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:18,721 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:18,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:18,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:18,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:18,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:18,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:18,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:18,724 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:18,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:18,724 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:18,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:18,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:18,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:18,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:18,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:18,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:18,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:18,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:18,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:18,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:18,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:18,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:18,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:19,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:19,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:19,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:19,039 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:19,039 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:19,040 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c [2019-10-13 21:15:19,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01639831/2e8c237c9f33414d96e99e374bc27a64/FLAG6ef30f23e [2019-10-13 21:15:19,746 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:19,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product13.cil.c [2019-10-13 21:15:19,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01639831/2e8c237c9f33414d96e99e374bc27a64/FLAG6ef30f23e [2019-10-13 21:15:19,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01639831/2e8c237c9f33414d96e99e374bc27a64 [2019-10-13 21:15:19,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:19,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:19,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:19,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:19,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:19,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:19,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489c2918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19, skipping insertion in model container [2019-10-13 21:15:19,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,005 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:20,087 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:20,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:20,916 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:21,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:21,094 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:21,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21 WrapperNode [2019-10-13 21:15:21,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:21,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:21,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:21,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:21,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... [2019-10-13 21:15:21,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:21,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:21,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:21,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:21,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:21,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:21,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:21,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:21,363 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:21,364 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:21,365 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:21,365 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:21,365 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:21,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:21,365 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:21,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:21,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:21,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:21,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:21,373 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:23,536 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:23,536 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:23,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:23 BoogieIcfgContainer [2019-10-13 21:15:23,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:23,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:23,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:23,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:23,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:19" (1/3) ... [2019-10-13 21:15:23,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1898aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:23, skipping insertion in model container [2019-10-13 21:15:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:21" (2/3) ... [2019-10-13 21:15:23,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1898aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:23, skipping insertion in model container [2019-10-13 21:15:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:23" (3/3) ... [2019-10-13 21:15:23,549 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product13.cil.c [2019-10-13 21:15:23,560 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:23,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:23,582 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:23,613 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:23,613 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:23,613 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:23,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:23,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:23,614 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:23,614 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:23,614 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states. [2019-10-13 21:15:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:15:23,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,669 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,672 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,679 INFO L82 PathProgramCache]: Analyzing trace with hash 772821080, now seen corresponding path program 1 times [2019-10-13 21:15:23,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064459222] [2019-10-13 21:15:23,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:24,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064459222] [2019-10-13 21:15:24,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:24,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:24,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999599102] [2019-10-13 21:15:24,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:24,379 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:24,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:24,397 INFO L87 Difference]: Start difference. First operand 459 states. Second operand 2 states. [2019-10-13 21:15:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:24,474 INFO L93 Difference]: Finished difference Result 627 states and 831 transitions. [2019-10-13 21:15:24,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:24,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-10-13 21:15:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:24,514 INFO L225 Difference]: With dead ends: 627 [2019-10-13 21:15:24,514 INFO L226 Difference]: Without dead ends: 414 [2019-10-13 21:15:24,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-13 21:15:24,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2019-10-13 21:15:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2019-10-13 21:15:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 551 transitions. [2019-10-13 21:15:24,665 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 551 transitions. Word has length 170 [2019-10-13 21:15:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:24,667 INFO L462 AbstractCegarLoop]: Abstraction has 414 states and 551 transitions. [2019-10-13 21:15:24,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 551 transitions. [2019-10-13 21:15:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:15:24,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:24,674 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:24,674 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:24,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash -978519588, now seen corresponding path program 1 times [2019-10-13 21:15:24,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:24,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684065657] [2019-10-13 21:15:24,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:24,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684065657] [2019-10-13 21:15:24,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:24,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:24,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103399741] [2019-10-13 21:15:24,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:24,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:24,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,983 INFO L87 Difference]: Start difference. First operand 414 states and 551 transitions. Second operand 3 states. [2019-10-13 21:15:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:25,059 INFO L93 Difference]: Finished difference Result 610 states and 796 transitions. [2019-10-13 21:15:25,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:25,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:15:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:25,064 INFO L225 Difference]: With dead ends: 610 [2019-10-13 21:15:25,064 INFO L226 Difference]: Without dead ends: 417 [2019-10-13 21:15:25,068 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2019-10-13 21:15:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2019-10-13 21:15:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-10-13 21:15:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 553 transitions. [2019-10-13 21:15:25,112 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 553 transitions. Word has length 171 [2019-10-13 21:15:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:25,114 INFO L462 AbstractCegarLoop]: Abstraction has 416 states and 553 transitions. [2019-10-13 21:15:25,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 553 transitions. [2019-10-13 21:15:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:15:25,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:25,121 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:25,121 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:25,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1778759344, now seen corresponding path program 1 times [2019-10-13 21:15:25,122 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:25,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561679444] [2019-10-13 21:15:25,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:25,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561679444] [2019-10-13 21:15:25,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:25,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:25,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150927421] [2019-10-13 21:15:25,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:25,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:25,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:25,381 INFO L87 Difference]: Start difference. First operand 416 states and 553 transitions. Second operand 3 states. [2019-10-13 21:15:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:25,438 INFO L93 Difference]: Finished difference Result 806 states and 1101 transitions. [2019-10-13 21:15:25,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:25,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 21:15:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:25,448 INFO L225 Difference]: With dead ends: 806 [2019-10-13 21:15:25,449 INFO L226 Difference]: Without dead ends: 455 [2019-10-13 21:15:25,451 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-10-13 21:15:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 454. [2019-10-13 21:15:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-10-13 21:15:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 619 transitions. [2019-10-13 21:15:25,488 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 619 transitions. Word has length 177 [2019-10-13 21:15:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:25,491 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 619 transitions. [2019-10-13 21:15:25,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 619 transitions. [2019-10-13 21:15:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:15:25,498 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:25,498 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:25,498 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:25,499 INFO L82 PathProgramCache]: Analyzing trace with hash -603589234, now seen corresponding path program 1 times [2019-10-13 21:15:25,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:25,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190035163] [2019-10-13 21:15:25,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:25,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190035163] [2019-10-13 21:15:25,830 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:25,830 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:15:25,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773644068] [2019-10-13 21:15:25,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:25,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:25,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:15:25,835 INFO L87 Difference]: Start difference. First operand 454 states and 619 transitions. Second operand 12 states. [2019-10-13 21:15:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:34,845 INFO L93 Difference]: Finished difference Result 1819 states and 2403 transitions. [2019-10-13 21:15:34,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:15:34,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2019-10-13 21:15:34,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:34,869 INFO L225 Difference]: With dead ends: 1819 [2019-10-13 21:15:34,870 INFO L226 Difference]: Without dead ends: 1485 [2019-10-13 21:15:34,875 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:15:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2019-10-13 21:15:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1466. [2019-10-13 21:15:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2019-10-13 21:15:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1913 transitions. [2019-10-13 21:15:35,041 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1913 transitions. Word has length 178 [2019-10-13 21:15:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:35,043 INFO L462 AbstractCegarLoop]: Abstraction has 1466 states and 1913 transitions. [2019-10-13 21:15:35,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1913 transitions. [2019-10-13 21:15:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:15:35,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:35,052 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:35,052 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:35,054 INFO L82 PathProgramCache]: Analyzing trace with hash 14445678, now seen corresponding path program 1 times [2019-10-13 21:15:35,054 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:35,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903491781] [2019-10-13 21:15:35,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:35,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903491781] [2019-10-13 21:15:35,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:35,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:15:35,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80849555] [2019-10-13 21:15:35,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:35,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:35,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:35,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:35,485 INFO L87 Difference]: Start difference. First operand 1466 states and 1913 transitions. Second operand 16 states. [2019-10-13 21:15:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:36,050 INFO L93 Difference]: Finished difference Result 2325 states and 3021 transitions. [2019-10-13 21:15:36,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:15:36,051 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 179 [2019-10-13 21:15:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:36,062 INFO L225 Difference]: With dead ends: 2325 [2019-10-13 21:15:36,062 INFO L226 Difference]: Without dead ends: 1070 [2019-10-13 21:15:36,068 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:15:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2019-10-13 21:15:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 952. [2019-10-13 21:15:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2019-10-13 21:15:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1251 transitions. [2019-10-13 21:15:36,143 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1251 transitions. Word has length 179 [2019-10-13 21:15:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:36,145 INFO L462 AbstractCegarLoop]: Abstraction has 952 states and 1251 transitions. [2019-10-13 21:15:36,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1251 transitions. [2019-10-13 21:15:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:15:36,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:36,150 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:36,150 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:36,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2119995647, now seen corresponding path program 1 times [2019-10-13 21:15:36,151 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:36,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599184108] [2019-10-13 21:15:36,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:15:38,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599184108] [2019-10-13 21:15:38,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371338614] [2019-10-13 21:15:38,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:38,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:38,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:15:39,424 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:39,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:40,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:40,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:40,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:40,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [51, 9] total 63 [2019-10-13 21:15:40,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464481645] [2019-10-13 21:15:40,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:40,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:40,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3748, Unknown=0, NotChecked=0, Total=3906 [2019-10-13 21:15:40,374 INFO L87 Difference]: Start difference. First operand 952 states and 1251 transitions. Second operand 9 states. [2019-10-13 21:15:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:41,487 INFO L93 Difference]: Finished difference Result 1882 states and 2482 transitions. [2019-10-13 21:15:41,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:41,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 188 [2019-10-13 21:15:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:41,493 INFO L225 Difference]: With dead ends: 1882 [2019-10-13 21:15:41,493 INFO L226 Difference]: Without dead ends: 966 [2019-10-13 21:15:41,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 363 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=185, Invalid=4105, Unknown=0, NotChecked=0, Total=4290 [2019-10-13 21:15:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-10-13 21:15:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2019-10-13 21:15:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2019-10-13 21:15:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1269 transitions. [2019-10-13 21:15:41,560 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1269 transitions. Word has length 188 [2019-10-13 21:15:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:41,561 INFO L462 AbstractCegarLoop]: Abstraction has 966 states and 1269 transitions. [2019-10-13 21:15:41,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1269 transitions. [2019-10-13 21:15:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:15:41,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:41,565 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:41,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:41,773 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash 870435541, now seen corresponding path program 1 times [2019-10-13 21:15:41,774 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:41,775 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673674544] [2019-10-13 21:15:41,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:41,775 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:41,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:15:43,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673674544] [2019-10-13 21:15:43,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194650269] [2019-10-13 21:15:43,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:44,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:44,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:15:44,704 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:45,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:45,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:45,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:45,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [49, 7] total 57 [2019-10-13 21:15:45,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82549816] [2019-10-13 21:15:45,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:45,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:45,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:45,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=3057, Unknown=0, NotChecked=0, Total=3192 [2019-10-13 21:15:45,362 INFO L87 Difference]: Start difference. First operand 966 states and 1269 transitions. Second operand 7 states. [2019-10-13 21:15:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:46,846 INFO L93 Difference]: Finished difference Result 1883 states and 2486 transitions. [2019-10-13 21:15:46,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:46,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-13 21:15:46,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:46,853 INFO L225 Difference]: With dead ends: 1883 [2019-10-13 21:15:46,853 INFO L226 Difference]: Without dead ends: 968 [2019-10-13 21:15:46,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=153, Invalid=3269, Unknown=0, NotChecked=0, Total=3422 [2019-10-13 21:15:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2019-10-13 21:15:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2019-10-13 21:15:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2019-10-13 21:15:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1272 transitions. [2019-10-13 21:15:46,902 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1272 transitions. Word has length 189 [2019-10-13 21:15:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:46,903 INFO L462 AbstractCegarLoop]: Abstraction has 968 states and 1272 transitions. [2019-10-13 21:15:46,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1272 transitions. [2019-10-13 21:15:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:15:46,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:46,907 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:47,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:47,126 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash 283611253, now seen corresponding path program 1 times [2019-10-13 21:15:47,127 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:47,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262178277] [2019-10-13 21:15:47,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:47,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:47,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:48,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262178277] [2019-10-13 21:15:48,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:48,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2019-10-13 21:15:48,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792404933] [2019-10-13 21:15:48,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-13 21:15:48,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:48,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-13 21:15:48,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 21:15:48,795 INFO L87 Difference]: Start difference. First operand 968 states and 1272 transitions. Second operand 44 states.