java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:34,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:34,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:34,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:34,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:34,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:34,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:34,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:34,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:34,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:34,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:34,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:34,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:34,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:34,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:34,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:34,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:34,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:34,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:34,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:34,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:34,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:34,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:34,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:34,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:34,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:34,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:34,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:34,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:34,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:34,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:34,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:34,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:34,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:34,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:34,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:34,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:34,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:34,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:34,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:34,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:34,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:34,329 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:34,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:34,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:34,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:34,331 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:34,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:34,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:34,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:34,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:34,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:34,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:34,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:34,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:34,335 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:34,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:34,335 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:34,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:34,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:34,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:34,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:34,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:34,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:34,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:34,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:34,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:34,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:34,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:34,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:34,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:34,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:34,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:34,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:34,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:34,641 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:34,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c [2019-10-13 21:18:34,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecd8ad6e/91f0702124c3442aa0f968245b49afcc/FLAG151be173c [2019-10-13 21:18:35,416 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:35,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product34.cil.c [2019-10-13 21:18:35,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecd8ad6e/91f0702124c3442aa0f968245b49afcc/FLAG151be173c [2019-10-13 21:18:35,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecd8ad6e/91f0702124c3442aa0f968245b49afcc [2019-10-13 21:18:35,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:35,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:35,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:35,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:35,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:35,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:35" (1/1) ... [2019-10-13 21:18:35,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377cbc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:35, skipping insertion in model container [2019-10-13 21:18:35,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:35" (1/1) ... [2019-10-13 21:18:35,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:35,681 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:36,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:36,482 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:36,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:36,802 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:36,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36 WrapperNode [2019-10-13 21:18:36,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:36,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:36,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:36,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:36,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... [2019-10-13 21:18:36,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:36,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:36,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:36,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:36,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:37,042 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:37,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:37,044 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:37,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:37,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:37,051 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:37,052 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:37,054 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:18:37,054 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:37,054 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:18:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:18:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:37,057 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:18:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:18:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:18:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:18:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:18:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:18:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:18:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:18:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:18:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:18:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:18:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:39,252 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:39,253 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:39,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:39 BoogieIcfgContainer [2019-10-13 21:18:39,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:39,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:39,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:39,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:39,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:35" (1/3) ... [2019-10-13 21:18:39,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406b7f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:39, skipping insertion in model container [2019-10-13 21:18:39,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:36" (2/3) ... [2019-10-13 21:18:39,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406b7f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:39, skipping insertion in model container [2019-10-13 21:18:39,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:39" (3/3) ... [2019-10-13 21:18:39,265 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product34.cil.c [2019-10-13 21:18:39,276 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:39,290 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:39,302 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:39,353 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:39,353 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:39,353 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:39,356 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:39,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:39,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:39,357 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:39,357 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states. [2019-10-13 21:18:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:18:39,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:39,434 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:39,438 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:39,444 INFO L82 PathProgramCache]: Analyzing trace with hash -794584526, now seen corresponding path program 1 times [2019-10-13 21:18:39,454 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:39,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281679921] [2019-10-13 21:18:39,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:39,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:39,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:40,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281679921] [2019-10-13 21:18:40,109 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:40,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:40,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094255290] [2019-10-13 21:18:40,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:40,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:40,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:40,135 INFO L87 Difference]: Start difference. First operand 655 states. Second operand 2 states. [2019-10-13 21:18:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:40,244 INFO L93 Difference]: Finished difference Result 996 states and 1339 transitions. [2019-10-13 21:18:40,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:40,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-13 21:18:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:40,286 INFO L225 Difference]: With dead ends: 996 [2019-10-13 21:18:40,286 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:18:40,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:18:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:18:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:18:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 848 transitions. [2019-10-13 21:18:40,416 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 848 transitions. Word has length 167 [2019-10-13 21:18:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:40,418 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 848 transitions. [2019-10-13 21:18:40,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 848 transitions. [2019-10-13 21:18:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:18:40,423 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:40,423 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:40,424 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -54617500, now seen corresponding path program 1 times [2019-10-13 21:18:40,424 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:40,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917808492] [2019-10-13 21:18:40,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:40,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:40,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:40,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917808492] [2019-10-13 21:18:40,795 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:40,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:40,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866573334] [2019-10-13 21:18:40,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:40,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:40,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:40,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:40,803 INFO L87 Difference]: Start difference. First operand 626 states and 848 transitions. Second operand 3 states. [2019-10-13 21:18:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:40,878 INFO L93 Difference]: Finished difference Result 979 states and 1304 transitions. [2019-10-13 21:18:40,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:40,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:18:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:40,884 INFO L225 Difference]: With dead ends: 979 [2019-10-13 21:18:40,884 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:18:40,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:18:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-10-13 21:18:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:18:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 850 transitions. [2019-10-13 21:18:40,928 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 850 transitions. Word has length 168 [2019-10-13 21:18:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:40,929 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 850 transitions. [2019-10-13 21:18:40,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 850 transitions. [2019-10-13 21:18:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:18:40,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:40,936 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:40,936 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1390838960, now seen corresponding path program 1 times [2019-10-13 21:18:40,937 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:40,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65573513] [2019-10-13 21:18:40,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:40,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:40,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:41,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65573513] [2019-10-13 21:18:41,127 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:41,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:41,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218207092] [2019-10-13 21:18:41,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:41,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:41,132 INFO L87 Difference]: Start difference. First operand 628 states and 850 transitions. Second operand 3 states. [2019-10-13 21:18:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:41,180 INFO L93 Difference]: Finished difference Result 1234 states and 1701 transitions. [2019-10-13 21:18:41,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:41,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 21:18:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:41,191 INFO L225 Difference]: With dead ends: 1234 [2019-10-13 21:18:41,191 INFO L226 Difference]: Without dead ends: 671 [2019-10-13 21:18:41,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-10-13 21:18:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 670. [2019-10-13 21:18:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-10-13 21:18:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 922 transitions. [2019-10-13 21:18:41,238 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 922 transitions. Word has length 174 [2019-10-13 21:18:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:41,240 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 922 transitions. [2019-10-13 21:18:41,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 922 transitions. [2019-10-13 21:18:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:18:41,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:41,249 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:41,249 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash -557359296, now seen corresponding path program 1 times [2019-10-13 21:18:41,250 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:41,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433127945] [2019-10-13 21:18:41,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:41,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433127945] [2019-10-13 21:18:41,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:41,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:41,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889288662] [2019-10-13 21:18:41,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:41,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:41,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:41,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:41,656 INFO L87 Difference]: Start difference. First operand 670 states and 922 transitions. Second operand 3 states. [2019-10-13 21:18:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:41,710 INFO L93 Difference]: Finished difference Result 1148 states and 1566 transitions. [2019-10-13 21:18:41,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:41,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:18:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:41,719 INFO L225 Difference]: With dead ends: 1148 [2019-10-13 21:18:41,720 INFO L226 Difference]: Without dead ends: 811 [2019-10-13 21:18:41,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2019-10-13 21:18:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 810. [2019-10-13 21:18:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-13 21:18:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1119 transitions. [2019-10-13 21:18:41,778 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1119 transitions. Word has length 175 [2019-10-13 21:18:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:41,779 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1119 transitions. [2019-10-13 21:18:41,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1119 transitions. [2019-10-13 21:18:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-13 21:18:41,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:41,793 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:41,793 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash -203609441, now seen corresponding path program 1 times [2019-10-13 21:18:41,794 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:41,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051331482] [2019-10-13 21:18:41,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:18:42,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051331482] [2019-10-13 21:18:42,216 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:42,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:42,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088903923] [2019-10-13 21:18:42,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:42,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:42,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:42,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:42,218 INFO L87 Difference]: Start difference. First operand 810 states and 1119 transitions. Second operand 6 states. [2019-10-13 21:18:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:43,034 INFO L93 Difference]: Finished difference Result 2010 states and 2769 transitions. [2019-10-13 21:18:43,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:43,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 320 [2019-10-13 21:18:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:43,048 INFO L225 Difference]: With dead ends: 2010 [2019-10-13 21:18:43,048 INFO L226 Difference]: Without dead ends: 1571 [2019-10-13 21:18:43,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2019-10-13 21:18:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1560. [2019-10-13 21:18:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2019-10-13 21:18:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2174 transitions. [2019-10-13 21:18:43,156 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2174 transitions. Word has length 320 [2019-10-13 21:18:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:43,156 INFO L462 AbstractCegarLoop]: Abstraction has 1560 states and 2174 transitions. [2019-10-13 21:18:43,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2174 transitions. [2019-10-13 21:18:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-13 21:18:43,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:43,167 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:43,167 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash 72654355, now seen corresponding path program 1 times [2019-10-13 21:18:43,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:43,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208596568] [2019-10-13 21:18:43,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:43,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:43,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:18:43,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208596568] [2019-10-13 21:18:43,700 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:43,700 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:18:43,700 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626764553] [2019-10-13 21:18:43,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:43,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:43,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:43,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:18:43,702 INFO L87 Difference]: Start difference. First operand 1560 states and 2174 transitions. Second operand 11 states. [2019-10-13 21:18:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:44,186 INFO L93 Difference]: Finished difference Result 2435 states and 3327 transitions. [2019-10-13 21:18:44,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:18:44,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 321 [2019-10-13 21:18:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:44,197 INFO L225 Difference]: With dead ends: 2435 [2019-10-13 21:18:44,197 INFO L226 Difference]: Without dead ends: 1534 [2019-10-13 21:18:44,201 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:18:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2019-10-13 21:18:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1530. [2019-10-13 21:18:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-10-13 21:18:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2123 transitions. [2019-10-13 21:18:44,275 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2123 transitions. Word has length 321 [2019-10-13 21:18:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:44,275 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2123 transitions. [2019-10-13 21:18:44,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2123 transitions. [2019-10-13 21:18:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-13 21:18:44,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:44,287 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:44,288 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash 299496427, now seen corresponding path program 1 times [2019-10-13 21:18:44,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:44,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475569052] [2019-10-13 21:18:44,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:44,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:44,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:44,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475569052] [2019-10-13 21:18:44,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70997951] [2019-10-13 21:18:44,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:45,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:45,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:18:46,148 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:46,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:47,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:47,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:47,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:47,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:47,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791735728] [2019-10-13 21:18:47,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:47,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:47,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:47,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:47,354 INFO L87 Difference]: Start difference. First operand 1530 states and 2123 transitions. Second operand 9 states. [2019-10-13 21:18:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,309 INFO L93 Difference]: Finished difference Result 3038 states and 4226 transitions. [2019-10-13 21:18:50,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:50,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-13 21:18:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,320 INFO L225 Difference]: With dead ends: 3038 [2019-10-13 21:18:50,320 INFO L226 Difference]: Without dead ends: 1544 [2019-10-13 21:18:50,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:50,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2019-10-13 21:18:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2019-10-13 21:18:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-10-13 21:18:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2141 transitions. [2019-10-13 21:18:50,403 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2141 transitions. Word has length 329 [2019-10-13 21:18:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,403 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2141 transitions. [2019-10-13 21:18:50,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2141 transitions. [2019-10-13 21:18:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-13 21:18:50,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,414 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:50,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:50,624 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash -213296622, now seen corresponding path program 1 times [2019-10-13 21:18:50,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:50,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502604555] [2019-10-13 21:18:50,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:51,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502604555] [2019-10-13 21:18:51,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164110624] [2019-10-13 21:18:51,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:52,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:52,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:18:52,373 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:53,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:53,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:53,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:53,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034013760] [2019-10-13 21:18:53,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:53,265 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:53,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:53,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:53,266 INFO L87 Difference]: Start difference. First operand 1544 states and 2141 transitions. Second operand 7 states. [2019-10-13 21:18:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:54,672 INFO L93 Difference]: Finished difference Result 3041 states and 4235 transitions. [2019-10-13 21:18:54,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:54,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-13 21:18:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:54,689 INFO L225 Difference]: With dead ends: 3041 [2019-10-13 21:18:54,689 INFO L226 Difference]: Without dead ends: 1548 [2019-10-13 21:18:54,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-13 21:18:54,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2019-10-13 21:18:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-10-13 21:18:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2146 transitions. [2019-10-13 21:18:54,766 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2146 transitions. Word has length 330 [2019-10-13 21:18:54,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:54,766 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2146 transitions. [2019-10-13 21:18:54,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2146 transitions. [2019-10-13 21:18:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-13 21:18:54,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:54,778 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:54,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:54,991 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:54,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1626429251, now seen corresponding path program 1 times [2019-10-13 21:18:54,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:54,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652056186] [2019-10-13 21:18:54,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:55,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652056186] [2019-10-13 21:18:55,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020966915] [2019-10-13 21:18:55,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:56,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:18:56,801 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:57,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:57,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:57,963 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:57,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:57,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837875703] [2019-10-13 21:18:57,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:57,965 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:57,966 INFO L87 Difference]: Start difference. First operand 1548 states and 2146 transitions. Second operand 16 states. [2019-10-13 21:19:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:00,638 INFO L93 Difference]: Finished difference Result 3047 states and 4234 transitions. [2019-10-13 21:19:00,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:00,639 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-13 21:19:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:00,655 INFO L225 Difference]: With dead ends: 3047 [2019-10-13 21:19:00,655 INFO L226 Difference]: Without dead ends: 1560 [2019-10-13 21:19:00,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-10-13 21:19:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-10-13 21:19:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-13 21:19:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2157 transitions. [2019-10-13 21:19:00,742 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2157 transitions. Word has length 331 [2019-10-13 21:19:00,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:00,743 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2157 transitions. [2019-10-13 21:19:00,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2157 transitions. [2019-10-13 21:19:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-13 21:19:00,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:00,753 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:00,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:00,964 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1588193256, now seen corresponding path program 2 times [2019-10-13 21:19:00,965 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:00,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685390013] [2019-10-13 21:19:00,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:00,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:00,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-13 21:19:01,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685390013] [2019-10-13 21:19:01,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566431340] [2019-10-13 21:19:01,581 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 21:19:02,387 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:02,387 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:02,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:02,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:02,618 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:03,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:03,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:19:03,628 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:03,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:03,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990736270] [2019-10-13 21:19:03,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:03,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:03,631 INFO L87 Difference]: Start difference. First operand 1558 states and 2157 transitions. Second operand 12 states. [2019-10-13 21:19:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:05,293 INFO L93 Difference]: Finished difference Result 3038 states and 4222 transitions. [2019-10-13 21:19:05,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:05,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-13 21:19:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:05,304 INFO L225 Difference]: With dead ends: 3038 [2019-10-13 21:19:05,304 INFO L226 Difference]: Without dead ends: 1560 [2019-10-13 21:19:05,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-10-13 21:19:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-10-13 21:19:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-13 21:19:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2156 transitions. [2019-10-13 21:19:05,370 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2156 transitions. Word has length 332 [2019-10-13 21:19:05,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:05,371 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2156 transitions. [2019-10-13 21:19:05,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:05,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2156 transitions. [2019-10-13 21:19:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-13 21:19:05,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:05,380 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:05,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:05,600 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:05,601 INFO L82 PathProgramCache]: Analyzing trace with hash -413070475, now seen corresponding path program 3 times [2019-10-13 21:19:05,601 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:05,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965091638] [2019-10-13 21:19:05,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:05,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 21:19:06,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965091638] [2019-10-13 21:19:06,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78500328] [2019-10-13 21:19:06,004 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:06,843 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:06,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:06,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 3164 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:06,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:07,161 INFO L321 TraceCheckSpWp]: Computing backward predicates...