/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec1_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:48:17,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:48:17,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:48:17,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:48:17,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:48:17,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:48:17,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:48:17,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:48:17,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:48:17,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:48:17,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:48:17,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:48:17,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:48:17,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:48:17,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:48:17,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:48:17,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:48:17,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:48:17,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:48:17,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:48:17,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:48:17,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:48:17,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:48:17,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:48:17,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:48:17,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:48:17,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:48:17,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:48:17,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:48:17,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:48:17,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:48:17,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:48:17,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:48:17,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:48:17,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:48:17,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:48:17,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:48:17,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:48:17,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:48:17,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:48:17,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:48:17,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:48:17,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:48:17,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:48:17,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:48:17,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:48:17,317 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:48:17,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:48:17,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:48:17,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:48:17,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:48:17,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:48:17,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:48:17,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:48:17,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:48:17,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:48:17,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:48:17,320 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:48:17,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:48:17,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:48:17,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:48:17,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:48:17,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:48:17,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:48:17,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:48:17,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:48:17,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:48:17,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:48:17,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:48:17,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:48:17,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:48:17,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:48:17,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:48:17,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:48:17,641 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:48:17,642 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:48:17,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product26.cil.c [2019-11-07 00:48:17,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04975adf8/82f07b64cc504bf09dd987fd0869d96d/FLAG6771948ba [2019-11-07 00:48:18,358 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:48:18,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product26.cil.c [2019-11-07 00:48:18,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04975adf8/82f07b64cc504bf09dd987fd0869d96d/FLAG6771948ba [2019-11-07 00:48:18,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04975adf8/82f07b64cc504bf09dd987fd0869d96d [2019-11-07 00:48:18,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:48:18,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:48:18,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:48:18,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:48:18,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:48:18,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:18" (1/1) ... [2019-11-07 00:48:18,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:18, skipping insertion in model container [2019-11-07 00:48:18,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:18" (1/1) ... [2019-11-07 00:48:18,606 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:48:18,776 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:48:20,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:48:20,083 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:48:20,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:48:20,296 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:48:20,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20 WrapperNode [2019-11-07 00:48:20,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:48:20,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:48:20,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:48:20,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:48:20,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... [2019-11-07 00:48:20,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:48:20,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:48:20,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:48:20,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:48:20,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:48:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:48:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:48:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:48:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:48:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:48:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:48:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:48:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:48:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:48:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:48:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:48:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:48:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:48:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:48:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:48:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:48:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:48:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:48:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:48:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:48:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:48:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:48:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:48:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:48:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:48:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:48:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:48:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:48:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:48:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:48:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:48:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:48:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:48:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:48:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:48:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:48:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:48:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:48:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:48:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:48:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:48:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:48:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:48:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:48:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:48:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:48:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:48:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:48:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:48:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:48:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:48:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:48:20,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:48:20,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:48:20,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:48:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:48:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:48:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:48:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:48:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:48:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:48:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:48:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:48:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:48:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:48:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:48:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:48:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:48:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:48:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:48:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:48:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:48:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:48:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:48:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:48:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:48:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:48:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:48:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:48:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:48:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:48:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:48:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:48:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:48:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:48:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:48:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:48:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:48:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:48:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:48:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:48:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:48:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:48:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:48:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:48:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:48:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:48:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:48:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:48:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:48:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:48:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:48:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:48:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:48:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:48:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:48:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:48:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:48:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:48:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:48:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:48:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:48:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:48:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:48:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:48:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:48:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:48:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:48:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:48:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:48:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:48:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:48:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:48:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:48:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:48:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:48:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:48:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:48:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:48:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:48:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:48:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:48:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:48:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:48:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:48:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:48:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:48:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:48:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:48:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:48:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:48:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:48:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:48:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:48:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:48:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:48:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:48:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:48:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:48:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:48:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:48:22,797 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:48:22,797 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:48:22,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:22 BoogieIcfgContainer [2019-11-07 00:48:22,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:48:22,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:48:22,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:48:22,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:48:22,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:48:18" (1/3) ... [2019-11-07 00:48:22,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f4057c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:22, skipping insertion in model container [2019-11-07 00:48:22,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:20" (2/3) ... [2019-11-07 00:48:22,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f4057c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:22, skipping insertion in model container [2019-11-07 00:48:22,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:22" (3/3) ... [2019-11-07 00:48:22,808 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product26.cil.c [2019-11-07 00:48:22,817 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:48:22,828 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:48:22,840 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:48:22,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:48:22,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:48:22,879 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:48:22,883 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:48:22,883 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:48:22,883 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:48:22,883 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:48:22,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:48:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states. [2019-11-07 00:48:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:48:22,956 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:22,960 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:22,963 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:22,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash 249801548, now seen corresponding path program 1 times [2019-11-07 00:48:22,979 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:22,980 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715542444] [2019-11-07 00:48:22,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:48:23,617 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715542444] [2019-11-07 00:48:23,618 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:23,618 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:48:23,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971951474] [2019-11-07 00:48:23,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:48:23,628 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:48:23,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:48:23,647 INFO L87 Difference]: Start difference. First operand 601 states. Second operand 2 states. [2019-11-07 00:48:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:23,762 INFO L93 Difference]: Finished difference Result 877 states and 1188 transitions. [2019-11-07 00:48:23,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:48:23,763 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-11-07 00:48:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:23,801 INFO L225 Difference]: With dead ends: 877 [2019-11-07 00:48:23,801 INFO L226 Difference]: Without dead ends: 572 [2019-11-07 00:48:23,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:48:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-11-07 00:48:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-11-07 00:48:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-11-07 00:48:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 780 transitions. [2019-11-07 00:48:23,936 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 780 transitions. Word has length 154 [2019-11-07 00:48:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:23,938 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 780 transitions. [2019-11-07 00:48:23,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:48:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 780 transitions. [2019-11-07 00:48:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:48:23,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:23,944 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:23,944 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:23,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1309331988, now seen corresponding path program 1 times [2019-11-07 00:48:23,945 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:23,945 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115165388] [2019-11-07 00:48:23,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:48:24,212 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115165388] [2019-11-07 00:48:24,212 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:24,212 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:24,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114542691] [2019-11-07 00:48:24,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:24,226 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:24,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:24,232 INFO L87 Difference]: Start difference. First operand 572 states and 780 transitions. Second operand 3 states. [2019-11-07 00:48:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:24,318 INFO L93 Difference]: Finished difference Result 860 states and 1154 transitions. [2019-11-07 00:48:24,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:24,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:48:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:24,374 INFO L225 Difference]: With dead ends: 860 [2019-11-07 00:48:24,374 INFO L226 Difference]: Without dead ends: 575 [2019-11-07 00:48:24,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2019-11-07 00:48:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 574. [2019-11-07 00:48:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2019-11-07 00:48:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 782 transitions. [2019-11-07 00:48:24,437 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 782 transitions. Word has length 155 [2019-11-07 00:48:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:24,439 INFO L462 AbstractCegarLoop]: Abstraction has 574 states and 782 transitions. [2019-11-07 00:48:24,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 782 transitions. [2019-11-07 00:48:24,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:48:24,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:24,447 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:24,447 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:24,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1076372643, now seen corresponding path program 1 times [2019-11-07 00:48:24,447 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:24,448 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958550637] [2019-11-07 00:48:24,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:48:24,668 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958550637] [2019-11-07 00:48:24,668 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:24,669 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:24,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740700205] [2019-11-07 00:48:24,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:24,677 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:24,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:24,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:24,678 INFO L87 Difference]: Start difference. First operand 574 states and 782 transitions. Second operand 3 states. [2019-11-07 00:48:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:24,745 INFO L93 Difference]: Finished difference Result 1128 states and 1568 transitions. [2019-11-07 00:48:24,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:24,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-11-07 00:48:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:24,755 INFO L225 Difference]: With dead ends: 1128 [2019-11-07 00:48:24,755 INFO L226 Difference]: Without dead ends: 619 [2019-11-07 00:48:24,758 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-11-07 00:48:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 618. [2019-11-07 00:48:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-11-07 00:48:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 857 transitions. [2019-11-07 00:48:24,810 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 857 transitions. Word has length 167 [2019-11-07 00:48:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:24,811 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 857 transitions. [2019-11-07 00:48:24,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 857 transitions. [2019-11-07 00:48:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:48:24,822 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:24,822 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:24,822 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -55572167, now seen corresponding path program 1 times [2019-11-07 00:48:24,824 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:24,824 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849081576] [2019-11-07 00:48:24,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:48:25,068 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849081576] [2019-11-07 00:48:25,069 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:25,069 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:25,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449772504] [2019-11-07 00:48:25,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:25,071 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:25,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:25,072 INFO L87 Difference]: Start difference. First operand 618 states and 857 transitions. Second operand 3 states. [2019-11-07 00:48:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:25,192 INFO L93 Difference]: Finished difference Result 1257 states and 1788 transitions. [2019-11-07 00:48:25,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:25,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:48:25,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:25,202 INFO L225 Difference]: With dead ends: 1257 [2019-11-07 00:48:25,202 INFO L226 Difference]: Without dead ends: 704 [2019-11-07 00:48:25,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-11-07 00:48:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 703. [2019-11-07 00:48:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-11-07 00:48:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1001 transitions. [2019-11-07 00:48:25,255 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1001 transitions. Word has length 168 [2019-11-07 00:48:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:25,256 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 1001 transitions. [2019-11-07 00:48:25,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1001 transitions. [2019-11-07 00:48:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:48:25,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:25,263 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:48:25,263 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:25,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1062481768, now seen corresponding path program 1 times [2019-11-07 00:48:25,264 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:25,264 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694936658] [2019-11-07 00:48:25,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-07 00:48:26,286 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694936658] [2019-11-07 00:48:26,287 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:26,287 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-11-07 00:48:26,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99865114] [2019-11-07 00:48:26,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-07 00:48:26,288 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-07 00:48:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:48:26,289 INFO L87 Difference]: Start difference. First operand 703 states and 1001 transitions. Second operand 35 states. [2019-11-07 00:48:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:32,505 INFO L93 Difference]: Finished difference Result 2051 states and 2980 transitions. [2019-11-07 00:48:32,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-07 00:48:32,505 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 171 [2019-11-07 00:48:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:32,515 INFO L225 Difference]: With dead ends: 2051 [2019-11-07 00:48:32,516 INFO L226 Difference]: Without dead ends: 1380 [2019-11-07 00:48:32,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2019-11-07 00:48:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2019-11-07 00:48:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1070. [2019-11-07 00:48:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2019-11-07 00:48:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1597 transitions. [2019-11-07 00:48:32,598 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1597 transitions. Word has length 171 [2019-11-07 00:48:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:32,599 INFO L462 AbstractCegarLoop]: Abstraction has 1070 states and 1597 transitions. [2019-11-07 00:48:32,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-07 00:48:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1597 transitions. [2019-11-07 00:48:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-07 00:48:32,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:32,604 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:48:32,605 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:32,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1787377896, now seen corresponding path program 1 times [2019-11-07 00:48:32,605 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:32,606 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162607265] [2019-11-07 00:48:32,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:48:32,756 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162607265] [2019-11-07 00:48:32,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:32,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:48:32,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768332773] [2019-11-07 00:48:32,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:48:32,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:48:32,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:32,759 INFO L87 Difference]: Start difference. First operand 1070 states and 1597 transitions. Second operand 3 states. [2019-11-07 00:48:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:32,830 INFO L93 Difference]: Finished difference Result 2390 states and 3682 transitions. [2019-11-07 00:48:32,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:48:32,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-11-07 00:48:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:32,839 INFO L225 Difference]: With dead ends: 2390 [2019-11-07 00:48:32,839 INFO L226 Difference]: Without dead ends: 1399 [2019-11-07 00:48:32,846 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:48:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-11-07 00:48:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1398. [2019-11-07 00:48:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1398 states. [2019-11-07 00:48:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2167 transitions. [2019-11-07 00:48:32,943 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2167 transitions. Word has length 170 [2019-11-07 00:48:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:32,945 INFO L462 AbstractCegarLoop]: Abstraction has 1398 states and 2167 transitions. [2019-11-07 00:48:32,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:48:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2167 transitions. [2019-11-07 00:48:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:48:32,953 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:32,954 INFO L410 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] [2019-11-07 00:48:32,954 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:32,955 INFO L82 PathProgramCache]: Analyzing trace with hash -50944113, now seen corresponding path program 1 times [2019-11-07 00:48:32,955 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:32,955 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266530891] [2019-11-07 00:48:32,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 00:48:33,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266530891] [2019-11-07 00:48:33,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697280381] [2019-11-07 00:48:33,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:48:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:34,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:48:34,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:48:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:48:34,833 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:48:35,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:35,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:48:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:35,549 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:48:35,550 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-11-07 00:48:35,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698395044] [2019-11-07 00:48:35,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:48:35,551 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:35,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:48:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:48:35,552 INFO L87 Difference]: Start difference. First operand 1398 states and 2167 transitions. Second operand 7 states. [2019-11-07 00:48:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:36,815 INFO L93 Difference]: Finished difference Result 2749 states and 4291 transitions. [2019-11-07 00:48:36,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:36,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-11-07 00:48:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:36,825 INFO L225 Difference]: With dead ends: 2749 [2019-11-07 00:48:36,826 INFO L226 Difference]: Without dead ends: 1402 [2019-11-07 00:48:36,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-11-07 00:48:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-11-07 00:48:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1402. [2019-11-07 00:48:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2019-11-07 00:48:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2172 transitions. [2019-11-07 00:48:36,933 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2172 transitions. Word has length 173 [2019-11-07 00:48:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:36,934 INFO L462 AbstractCegarLoop]: Abstraction has 1402 states and 2172 transitions. [2019-11-07 00:48:36,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:48:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2172 transitions. [2019-11-07 00:48:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:48:36,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:36,944 INFO L410 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] [2019-11-07 00:48:37,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:48:37,154 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2069323625, now seen corresponding path program 1 times [2019-11-07 00:48:37,155 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:37,155 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707318201] [2019-11-07 00:48:37,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:37,910 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707318201] [2019-11-07 00:48:37,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:37,911 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:48:37,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931734147] [2019-11-07 00:48:37,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:48:37,912 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:37,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:48:37,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:48:37,913 INFO L87 Difference]: Start difference. First operand 1402 states and 2172 transitions. Second operand 26 states. [2019-11-07 00:48:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:48,010 INFO L93 Difference]: Finished difference Result 3922 states and 5848 transitions. [2019-11-07 00:48:48,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-07 00:48:48,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 174 [2019-11-07 00:48:48,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:48,035 INFO L225 Difference]: With dead ends: 3922 [2019-11-07 00:48:48,035 INFO L226 Difference]: Without dead ends: 3646 [2019-11-07 00:48:48,039 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-11-07 00:48:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2019-11-07 00:48:48,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3035. [2019-11-07 00:48:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3035 states. [2019-11-07 00:48:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4680 transitions. [2019-11-07 00:48:48,283 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4680 transitions. Word has length 174 [2019-11-07 00:48:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:48,286 INFO L462 AbstractCegarLoop]: Abstraction has 3035 states and 4680 transitions. [2019-11-07 00:48:48,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:48:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4680 transitions. [2019-11-07 00:48:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:48:48,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:48,313 INFO L410 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] [2019-11-07 00:48:48,314 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1871716322, now seen corresponding path program 1 times [2019-11-07 00:48:48,314 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:48,315 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767889568] [2019-11-07 00:48:48,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:48:48,568 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767889568] [2019-11-07 00:48:48,569 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:48,569 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:48:48,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981689605] [2019-11-07 00:48:48,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:48:48,570 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:48,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:48:48,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:48:48,571 INFO L87 Difference]: Start difference. First operand 3035 states and 4680 transitions. Second operand 12 states. [2019-11-07 00:48:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:48,911 INFO L93 Difference]: Finished difference Result 3956 states and 5956 transitions. [2019-11-07 00:48:48,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:48:48,912 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 175 [2019-11-07 00:48:48,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:48,939 INFO L225 Difference]: With dead ends: 3956 [2019-11-07 00:48:48,940 INFO L226 Difference]: Without dead ends: 3125 [2019-11-07 00:48:48,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:48:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2019-11-07 00:48:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2019-11-07 00:48:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2019-11-07 00:48:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4821 transitions. [2019-11-07 00:48:49,141 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4821 transitions. Word has length 175 [2019-11-07 00:48:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:49,143 INFO L462 AbstractCegarLoop]: Abstraction has 3125 states and 4821 transitions. [2019-11-07 00:48:49,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:48:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4821 transitions. [2019-11-07 00:48:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:48:49,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:49,158 INFO L410 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] [2019-11-07 00:48:49,159 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:49,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:49,159 INFO L82 PathProgramCache]: Analyzing trace with hash 483136297, now seen corresponding path program 1 times [2019-11-07 00:48:49,159 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:49,160 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472681893] [2019-11-07 00:48:49,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:48:49,316 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472681893] [2019-11-07 00:48:49,316 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:49,316 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:48:49,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474117802] [2019-11-07 00:48:49,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:48:49,322 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:49,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:48:49,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:48:49,323 INFO L87 Difference]: Start difference. First operand 3125 states and 4821 transitions. Second operand 5 states. [2019-11-07 00:48:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:48:50,426 INFO L93 Difference]: Finished difference Result 6879 states and 10366 transitions. [2019-11-07 00:48:50,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:48:50,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2019-11-07 00:48:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:48:50,478 INFO L225 Difference]: With dead ends: 6879 [2019-11-07 00:48:50,479 INFO L226 Difference]: Without dead ends: 6003 [2019-11-07 00:48:50,486 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:48:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6003 states. [2019-11-07 00:48:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6003 to 5466. [2019-11-07 00:48:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5466 states. [2019-11-07 00:48:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 8222 transitions. [2019-11-07 00:48:50,830 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 8222 transitions. Word has length 175 [2019-11-07 00:48:50,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:48:50,831 INFO L462 AbstractCegarLoop]: Abstraction has 5466 states and 8222 transitions. [2019-11-07 00:48:50,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:48:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 8222 transitions. [2019-11-07 00:48:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:48:50,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:48:50,849 INFO L410 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] [2019-11-07 00:48:50,850 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:48:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:48:50,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1526967544, now seen corresponding path program 1 times [2019-11-07 00:48:50,850 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:48:50,850 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919963124] [2019-11-07 00:48:50,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:48:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:48:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:48:51,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919963124] [2019-11-07 00:48:51,054 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:48:51,055 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:48:51,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686668124] [2019-11-07 00:48:51,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:48:51,056 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:48:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:48:51,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:48:51,056 INFO L87 Difference]: Start difference. First operand 5466 states and 8222 transitions. Second operand 9 states.