java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:56,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:56,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:56,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:56,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:56,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:56,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:56,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:56,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:56,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:56,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:56,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:56,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:56,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:56,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:56,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:56,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:56,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:56,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:56,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:56,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:56,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:56,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:56,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:56,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:56,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:56,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:56,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:56,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:56,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:56,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:56,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:56,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:56,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:56,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:56,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:56,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:56,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:56,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:56,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:56,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:56,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:56,524 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:56,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:56,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:56,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:56,529 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:56,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:56,529 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:56,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:56,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:56,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:56,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:56,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:56,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:56,531 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:56,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:56,531 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:56,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:56,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:56,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:56,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:56,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:56,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:56,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:56,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:56,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:56,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:56,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:56,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:56,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:56,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:56,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:56,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:56,860 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:56,860 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:56,861 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product34.cil.c [2019-10-13 21:15:56,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aceed67d/d1c928ea7b72498d8788e05463f3bd51/FLAGb010e4205 [2019-10-13 21:15:57,668 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:57,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product34.cil.c [2019-10-13 21:15:57,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aceed67d/d1c928ea7b72498d8788e05463f3bd51/FLAGb010e4205 [2019-10-13 21:15:57,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aceed67d/d1c928ea7b72498d8788e05463f3bd51 [2019-10-13 21:15:57,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:57,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:57,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:57,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:57,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:57,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@843e590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57, skipping insertion in model container [2019-10-13 21:15:57,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,811 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:57,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:58,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:58,807 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:58,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:59,131 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:59,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59 WrapperNode [2019-10-13 21:15:59,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:59,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:59,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:59,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:59,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:59,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:59,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:59,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:59,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:59,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:59,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:59,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:59,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:59,486 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:59,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:59,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:59,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:59,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:59,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:01,755 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:01,755 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:01,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:01 BoogieIcfgContainer [2019-10-13 21:16:01,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:01,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:01,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:01,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:01,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:57" (1/3) ... [2019-10-13 21:16:01,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4921c103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:01, skipping insertion in model container [2019-10-13 21:16:01,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59" (2/3) ... [2019-10-13 21:16:01,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4921c103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:01, skipping insertion in model container [2019-10-13 21:16:01,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:01" (3/3) ... [2019-10-13 21:16:01,769 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product34.cil.c [2019-10-13 21:16:01,780 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:01,794 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:01,807 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:01,851 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:01,851 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:01,852 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:01,861 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:01,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:01,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:01,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:01,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states. [2019-10-13 21:16:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:16:01,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:01,929 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:01,931 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:01,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1487196270, now seen corresponding path program 1 times [2019-10-13 21:16:01,947 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:01,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253146383] [2019-10-13 21:16:01,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:02,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253146383] [2019-10-13 21:16:02,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:02,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:02,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076753221] [2019-10-13 21:16:02,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:02,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:02,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:02,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:02,737 INFO L87 Difference]: Start difference. First operand 663 states. Second operand 2 states. [2019-10-13 21:16:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:02,836 INFO L93 Difference]: Finished difference Result 1012 states and 1368 transitions. [2019-10-13 21:16:02,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:02,841 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2019-10-13 21:16:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:02,864 INFO L225 Difference]: With dead ends: 1012 [2019-10-13 21:16:02,864 INFO L226 Difference]: Without dead ends: 634 [2019-10-13 21:16:02,872 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-13 21:16:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-13 21:16:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-13 21:16:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 860 transitions. [2019-10-13 21:16:03,007 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 860 transitions. Word has length 204 [2019-10-13 21:16:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:03,011 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 860 transitions. [2019-10-13 21:16:03,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 860 transitions. [2019-10-13 21:16:03,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:16:03,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:03,023 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:03,027 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:03,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:03,027 INFO L82 PathProgramCache]: Analyzing trace with hash -782515477, now seen corresponding path program 1 times [2019-10-13 21:16:03,028 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,028 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682742373] [2019-10-13 21:16:03,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:03,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682742373] [2019-10-13 21:16:03,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:03,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:03,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541554445] [2019-10-13 21:16:03,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:03,482 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:03,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:03,483 INFO L87 Difference]: Start difference. First operand 634 states and 860 transitions. Second operand 3 states. [2019-10-13 21:16:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:03,588 INFO L93 Difference]: Finished difference Result 995 states and 1328 transitions. [2019-10-13 21:16:03,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:03,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-13 21:16:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:03,601 INFO L225 Difference]: With dead ends: 995 [2019-10-13 21:16:03,601 INFO L226 Difference]: Without dead ends: 637 [2019-10-13 21:16:03,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-13 21:16:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-10-13 21:16:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 21:16:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 862 transitions. [2019-10-13 21:16:03,673 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 862 transitions. Word has length 205 [2019-10-13 21:16:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:03,675 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 862 transitions. [2019-10-13 21:16:03,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 862 transitions. [2019-10-13 21:16:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 21:16:03,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:03,684 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:03,685 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:03,685 INFO L82 PathProgramCache]: Analyzing trace with hash 447199231, now seen corresponding path program 1 times [2019-10-13 21:16:03,685 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443067661] [2019-10-13 21:16:03,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:03,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443067661] [2019-10-13 21:16:03,924 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:03,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:03,925 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119024204] [2019-10-13 21:16:03,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:03,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:03,930 INFO L87 Difference]: Start difference. First operand 636 states and 862 transitions. Second operand 3 states. [2019-10-13 21:16:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:03,975 INFO L93 Difference]: Finished difference Result 1250 states and 1725 transitions. [2019-10-13 21:16:03,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:03,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2019-10-13 21:16:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:03,981 INFO L225 Difference]: With dead ends: 1250 [2019-10-13 21:16:03,981 INFO L226 Difference]: Without dead ends: 679 [2019-10-13 21:16:03,984 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-13 21:16:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 678. [2019-10-13 21:16:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2019-10-13 21:16:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 934 transitions. [2019-10-13 21:16:04,015 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 934 transitions. Word has length 211 [2019-10-13 21:16:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:04,016 INFO L462 AbstractCegarLoop]: Abstraction has 678 states and 934 transitions. [2019-10-13 21:16:04,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 934 transitions. [2019-10-13 21:16:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:16:04,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:04,022 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:04,023 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash -811623100, now seen corresponding path program 1 times [2019-10-13 21:16:04,024 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:04,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320324736] [2019-10-13 21:16:04,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:04,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320324736] [2019-10-13 21:16:04,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817981562] [2019-10-13 21:16:04,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:05,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:05,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:05,974 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:06,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:06,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:06,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:06,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:06,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683416558] [2019-10-13 21:16:06,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:06,827 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:06,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:06,829 INFO L87 Difference]: Start difference. First operand 678 states and 934 transitions. Second operand 9 states. [2019-10-13 21:16:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:08,701 INFO L93 Difference]: Finished difference Result 1334 states and 1848 transitions. [2019-10-13 21:16:08,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:08,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-13 21:16:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:08,708 INFO L225 Difference]: With dead ends: 1334 [2019-10-13 21:16:08,708 INFO L226 Difference]: Without dead ends: 692 [2019-10-13 21:16:08,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2019-10-13 21:16:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2019-10-13 21:16:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2019-10-13 21:16:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 952 transitions. [2019-10-13 21:16:08,750 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 952 transitions. Word has length 212 [2019-10-13 21:16:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:08,750 INFO L462 AbstractCegarLoop]: Abstraction has 692 states and 952 transitions. [2019-10-13 21:16:08,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 952 transitions. [2019-10-13 21:16:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:16:08,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:08,755 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:08,966 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:08,967 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:08,968 INFO L82 PathProgramCache]: Analyzing trace with hash -181621143, now seen corresponding path program 1 times [2019-10-13 21:16:08,968 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:08,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947981248] [2019-10-13 21:16:08,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:09,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947981248] [2019-10-13 21:16:09,417 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770073864] [2019-10-13 21:16:09,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:10,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:10,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:10,521 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:10,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:11,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:11,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:11,026 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916723850] [2019-10-13 21:16:11,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:11,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:11,028 INFO L87 Difference]: Start difference. First operand 692 states and 952 transitions. Second operand 7 states. [2019-10-13 21:16:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:13,106 INFO L93 Difference]: Finished difference Result 1335 states and 1852 transitions. [2019-10-13 21:16:13,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:13,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-10-13 21:16:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:13,112 INFO L225 Difference]: With dead ends: 1335 [2019-10-13 21:16:13,112 INFO L226 Difference]: Without dead ends: 694 [2019-10-13 21:16:13,115 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-10-13 21:16:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2019-10-13 21:16:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:16:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 955 transitions. [2019-10-13 21:16:13,157 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 955 transitions. Word has length 213 [2019-10-13 21:16:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:13,158 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 955 transitions. [2019-10-13 21:16:13,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 955 transitions. [2019-10-13 21:16:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:16:13,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:13,166 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:13,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:13,377 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:13,378 INFO L82 PathProgramCache]: Analyzing trace with hash -78011398, now seen corresponding path program 1 times [2019-10-13 21:16:13,378 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:13,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067919705] [2019-10-13 21:16:13,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:13,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:13,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:14,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067919705] [2019-10-13 21:16:14,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946140629] [2019-10-13 21:16:14,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:14,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 3199 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:14,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:15,351 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:15,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:15,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:15,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:16,093 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:16,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:16,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302244427] [2019-10-13 21:16:16,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:16,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:16,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:16,097 INFO L87 Difference]: Start difference. First operand 694 states and 955 transitions. Second operand 16 states. [2019-10-13 21:16:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:19,101 INFO L93 Difference]: Finished difference Result 1339 states and 1852 transitions. [2019-10-13 21:16:19,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:19,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-10-13 21:16:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:19,107 INFO L225 Difference]: With dead ends: 1339 [2019-10-13 21:16:19,108 INFO L226 Difference]: Without dead ends: 706 [2019-10-13 21:16:19,110 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 417 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-10-13 21:16:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 704. [2019-10-13 21:16:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-13 21:16:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 966 transitions. [2019-10-13 21:16:19,140 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 966 transitions. Word has length 214 [2019-10-13 21:16:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:19,141 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 966 transitions. [2019-10-13 21:16:19,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 966 transitions. [2019-10-13 21:16:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:16:19,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:19,145 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:19,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:19,355 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:19,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2115781347, now seen corresponding path program 2 times [2019-10-13 21:16:19,356 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:19,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870208719] [2019-10-13 21:16:19,357 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:19,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:19,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:19,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870208719] [2019-10-13 21:16:19,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301067095] [2019-10-13 21:16:19,782 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:20,438 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:20,439 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:20,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:20,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:20,674 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:21,241 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:21,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:21,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098730099] [2019-10-13 21:16:21,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:21,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:21,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:21,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:21,243 INFO L87 Difference]: Start difference. First operand 704 states and 966 transitions. Second operand 14 states. [2019-10-13 21:16:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:24,078 INFO L93 Difference]: Finished difference Result 2389 states and 3317 transitions. [2019-10-13 21:16:24,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:24,078 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-10-13 21:16:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:24,094 INFO L225 Difference]: With dead ends: 2389 [2019-10-13 21:16:24,095 INFO L226 Difference]: Without dead ends: 2044 [2019-10-13 21:16:24,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2019-10-13 21:16:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1650. [2019-10-13 21:16:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1650 states. [2019-10-13 21:16:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2333 transitions. [2019-10-13 21:16:24,196 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2333 transitions. Word has length 215 [2019-10-13 21:16:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:24,198 INFO L462 AbstractCegarLoop]: Abstraction has 1650 states and 2333 transitions. [2019-10-13 21:16:24,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2333 transitions. [2019-10-13 21:16:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:16:24,205 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:24,206 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:24,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:24,413 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:24,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1274425157, now seen corresponding path program 1 times [2019-10-13 21:16:24,414 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:24,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810209491] [2019-10-13 21:16:24,415 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:24,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:24,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:24,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810209491] [2019-10-13 21:16:24,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536116222] [2019-10-13 21:16:24,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:25,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 3201 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:25,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:25,566 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:25,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:25,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:26,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:26,150 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:26,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:26,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67329874] [2019-10-13 21:16:26,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:26,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:26,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:26,156 INFO L87 Difference]: Start difference. First operand 1650 states and 2333 transitions. Second operand 15 states. [2019-10-13 21:16:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:28,925 INFO L93 Difference]: Finished difference Result 3194 states and 4542 transitions. [2019-10-13 21:16:28,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:28,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-10-13 21:16:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:28,937 INFO L225 Difference]: With dead ends: 3194 [2019-10-13 21:16:28,938 INFO L226 Difference]: Without dead ends: 1656 [2019-10-13 21:16:28,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2019-10-13 21:16:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1650. [2019-10-13 21:16:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1650 states. [2019-10-13 21:16:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2331 transitions. [2019-10-13 21:16:29,013 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2331 transitions. Word has length 216 [2019-10-13 21:16:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:29,014 INFO L462 AbstractCegarLoop]: Abstraction has 1650 states and 2331 transitions. [2019-10-13 21:16:29,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2331 transitions. [2019-10-13 21:16:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:16:29,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:29,022 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:29,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:29,230 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash -518021141, now seen corresponding path program 1 times [2019-10-13 21:16:29,231 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:29,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301705899] [2019-10-13 21:16:29,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:29,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:29,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:29,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301705899] [2019-10-13 21:16:29,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321016906] [2019-10-13 21:16:29,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true