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_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:22,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:22,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:22,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:22,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:22,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:22,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:22,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:22,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:22,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:22,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:22,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:22,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:22,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:22,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:22,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:22,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:22,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:22,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:22,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:22,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:22,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:22,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:22,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:22,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:22,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:22,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:22,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:22,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:22,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:22,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:22,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:22,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:22,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:22,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:22,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:22,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:22,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:22,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:22,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:22,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:22,503 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 21:16:22,517 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:22,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:22,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:22,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:22,519 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:22,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:22,520 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:22,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:22,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:22,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:22,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:22,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:22,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:22,521 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:22,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:22,522 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:22,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:22,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:22,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:22,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:22,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:22,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:22,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:22,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:22,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:22,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:22,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:22,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:22,524 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 21:16:22,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:22,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:22,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:22,835 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:22,835 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:22,836 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-10-13 21:16:22,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56498d69b/00c28ff00e7b40ac854bc5df534375ca/FLAGd87bdb888 [2019-10-13 21:16:23,582 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:23,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-10-13 21:16:23,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56498d69b/00c28ff00e7b40ac854bc5df534375ca/FLAGd87bdb888 [2019-10-13 21:16:23,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56498d69b/00c28ff00e7b40ac854bc5df534375ca [2019-10-13 21:16:23,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:23,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:23,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:23,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:23,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:23,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:23" (1/1) ... [2019-10-13 21:16:23,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29914bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:23, skipping insertion in model container [2019-10-13 21:16:23,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:23" (1/1) ... [2019-10-13 21:16:23,810 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:23,891 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:24,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:24,730 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:24,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:24,976 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:24,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24 WrapperNode [2019-10-13 21:16:24,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:24,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:24,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:24,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:24,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:24,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:25,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:25,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:25,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:25,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:25,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (1/1) ... [2019-10-13 21:16:25,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:25,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:25,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:25,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:25,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (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 21:16:25,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:25,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:25,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:25,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:25,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:25,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:25,261 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:16:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:25,269 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:25,269 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:25,269 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:25,269 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:16:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:16:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:25,273 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:16:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:16:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:25,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:25,275 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:25,277 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:25,278 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:25,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:25,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:25,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:25,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:25,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:25,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:25,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:25,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:25,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:16:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:16:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:16:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:16:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:27,435 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:27,436 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:27,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:27 BoogieIcfgContainer [2019-10-13 21:16:27,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:27,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:27,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:27,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:27,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:23" (1/3) ... [2019-10-13 21:16:27,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d62f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:27, skipping insertion in model container [2019-10-13 21:16:27,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:24" (2/3) ... [2019-10-13 21:16:27,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d62f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:27, skipping insertion in model container [2019-10-13 21:16:27,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:27" (3/3) ... [2019-10-13 21:16:27,446 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2019-10-13 21:16:27,456 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:27,468 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:27,480 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:27,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:27,519 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:27,519 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:27,520 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:27,520 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:27,520 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:27,520 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:27,520 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states. [2019-10-13 21:16:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:16:27,583 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:27,585 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:27,587 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1092646589, now seen corresponding path program 1 times [2019-10-13 21:16:27,603 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:27,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007822399] [2019-10-13 21:16:27,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:27,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:27,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:28,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007822399] [2019-10-13 21:16:28,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:28,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:28,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372830080] [2019-10-13 21:16:28,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:28,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:28,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:28,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:28,258 INFO L87 Difference]: Start difference. First operand 494 states. Second operand 2 states. [2019-10-13 21:16:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:28,342 INFO L93 Difference]: Finished difference Result 730 states and 953 transitions. [2019-10-13 21:16:28,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:28,343 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-10-13 21:16:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:28,382 INFO L225 Difference]: With dead ends: 730 [2019-10-13 21:16:28,382 INFO L226 Difference]: Without dead ends: 471 [2019-10-13 21:16:28,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-13 21:16:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2019-10-13 21:16:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2019-10-13 21:16:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 621 transitions. [2019-10-13 21:16:28,513 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 621 transitions. Word has length 148 [2019-10-13 21:16:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:28,516 INFO L462 AbstractCegarLoop]: Abstraction has 471 states and 621 transitions. [2019-10-13 21:16:28,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 621 transitions. [2019-10-13 21:16:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 21:16:28,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:28,523 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:28,523 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:28,523 INFO L82 PathProgramCache]: Analyzing trace with hash -810141649, now seen corresponding path program 1 times [2019-10-13 21:16:28,524 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:28,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806790201] [2019-10-13 21:16:28,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:28,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806790201] [2019-10-13 21:16:28,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:28,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:28,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003658586] [2019-10-13 21:16:28,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:28,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:28,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:28,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:28,833 INFO L87 Difference]: Start difference. First operand 471 states and 621 transitions. Second operand 3 states. [2019-10-13 21:16:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:28,923 INFO L93 Difference]: Finished difference Result 713 states and 922 transitions. [2019-10-13 21:16:28,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:28,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-13 21:16:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:28,931 INFO L225 Difference]: With dead ends: 713 [2019-10-13 21:16:28,931 INFO L226 Difference]: Without dead ends: 474 [2019-10-13 21:16:28,934 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-10-13 21:16:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2019-10-13 21:16:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-13 21:16:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 623 transitions. [2019-10-13 21:16:28,969 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 623 transitions. Word has length 149 [2019-10-13 21:16:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:28,970 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 623 transitions. [2019-10-13 21:16:28,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 623 transitions. [2019-10-13 21:16:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:16:28,974 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:28,975 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:28,975 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:28,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:28,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1944980387, now seen corresponding path program 1 times [2019-10-13 21:16:28,976 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:28,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412644314] [2019-10-13 21:16:28,976 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,976 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:29,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412644314] [2019-10-13 21:16:29,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:29,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:29,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207118086] [2019-10-13 21:16:29,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:29,153 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:29,154 INFO L87 Difference]: Start difference. First operand 473 states and 623 transitions. Second operand 3 states. [2019-10-13 21:16:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:29,195 INFO L93 Difference]: Finished difference Result 922 states and 1244 transitions. [2019-10-13 21:16:29,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:29,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:16:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:29,200 INFO L225 Difference]: With dead ends: 922 [2019-10-13 21:16:29,201 INFO L226 Difference]: Without dead ends: 514 [2019-10-13 21:16:29,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-10-13 21:16:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2019-10-13 21:16:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-13 21:16:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 692 transitions. [2019-10-13 21:16:29,226 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 692 transitions. Word has length 155 [2019-10-13 21:16:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:29,227 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 692 transitions. [2019-10-13 21:16:29,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 692 transitions. [2019-10-13 21:16:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:16:29,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:29,232 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:29,232 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1177925529, now seen corresponding path program 1 times [2019-10-13 21:16:29,233 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:29,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152960971] [2019-10-13 21:16:29,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:29,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:29,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:29,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152960971] [2019-10-13 21:16:29,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:29,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:29,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114820017] [2019-10-13 21:16:29,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:29,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:29,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:29,473 INFO L87 Difference]: Start difference. First operand 513 states and 692 transitions. Second operand 7 states. [2019-10-13 21:16:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:32,278 INFO L93 Difference]: Finished difference Result 983 states and 1285 transitions. [2019-10-13 21:16:32,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:32,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-10-13 21:16:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:32,293 INFO L225 Difference]: With dead ends: 983 [2019-10-13 21:16:32,294 INFO L226 Difference]: Without dead ends: 755 [2019-10-13 21:16:32,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2019-10-13 21:16:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 746. [2019-10-13 21:16:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-13 21:16:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 987 transitions. [2019-10-13 21:16:32,360 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 987 transitions. Word has length 156 [2019-10-13 21:16:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:32,362 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 987 transitions. [2019-10-13 21:16:32,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 987 transitions. [2019-10-13 21:16:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:16:32,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:32,369 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:32,369 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:32,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1743072704, now seen corresponding path program 1 times [2019-10-13 21:16:32,370 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:32,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467931469] [2019-10-13 21:16:32,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:32,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:32,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:32,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467931469] [2019-10-13 21:16:32,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:32,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:16:32,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107159950] [2019-10-13 21:16:32,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:32,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:32,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:32,676 INFO L87 Difference]: Start difference. First operand 746 states and 987 transitions. Second operand 16 states. [2019-10-13 21:16:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:33,110 INFO L93 Difference]: Finished difference Result 1263 states and 1648 transitions. [2019-10-13 21:16:33,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:16:33,110 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-10-13 21:16:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:33,116 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:16:33,117 INFO L226 Difference]: Without dead ends: 778 [2019-10-13 21:16:33,119 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:16:33,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2019-10-13 21:16:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 774. [2019-10-13 21:16:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2019-10-13 21:16:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1024 transitions. [2019-10-13 21:16:33,155 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1024 transitions. Word has length 157 [2019-10-13 21:16:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:33,158 INFO L462 AbstractCegarLoop]: Abstraction has 774 states and 1024 transitions. [2019-10-13 21:16:33,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1024 transitions. [2019-10-13 21:16:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:16:33,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:33,162 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:33,162 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:33,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:33,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1940029047, now seen corresponding path program 1 times [2019-10-13 21:16:33,163 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:33,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818483598] [2019-10-13 21:16:33,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:33,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818483598] [2019-10-13 21:16:33,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:33,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:33,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786234253] [2019-10-13 21:16:33,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:33,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:33,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:33,363 INFO L87 Difference]: Start difference. First operand 774 states and 1024 transitions. Second operand 8 states. [2019-10-13 21:16:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:34,192 INFO L93 Difference]: Finished difference Result 1383 states and 1801 transitions. [2019-10-13 21:16:34,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:34,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2019-10-13 21:16:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:34,204 INFO L225 Difference]: With dead ends: 1383 [2019-10-13 21:16:34,204 INFO L226 Difference]: Without dead ends: 1296 [2019-10-13 21:16:34,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2019-10-13 21:16:34,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1283. [2019-10-13 21:16:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-10-13 21:16:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1679 transitions. [2019-10-13 21:16:34,346 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1679 transitions. Word has length 166 [2019-10-13 21:16:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:34,351 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1679 transitions. [2019-10-13 21:16:34,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1679 transitions. [2019-10-13 21:16:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:16:34,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:34,356 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:34,356 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -511327191, now seen corresponding path program 1 times [2019-10-13 21:16:34,357 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:34,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672168754] [2019-10-13 21:16:34,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:34,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672168754] [2019-10-13 21:16:34,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:34,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:16:34,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989631225] [2019-10-13 21:16:34,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:34,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:34,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:34,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:16:34,655 INFO L87 Difference]: Start difference. First operand 1283 states and 1679 transitions. Second operand 15 states. [2019-10-13 21:16:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:35,215 INFO L93 Difference]: Finished difference Result 1762 states and 2282 transitions. [2019-10-13 21:16:35,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 21:16:35,216 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2019-10-13 21:16:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:35,224 INFO L225 Difference]: With dead ends: 1762 [2019-10-13 21:16:35,224 INFO L226 Difference]: Without dead ends: 1282 [2019-10-13 21:16:35,227 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-13 21:16:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1281. [2019-10-13 21:16:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2019-10-13 21:16:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1674 transitions. [2019-10-13 21:16:35,294 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1674 transitions. Word has length 167 [2019-10-13 21:16:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:35,295 INFO L462 AbstractCegarLoop]: Abstraction has 1281 states and 1674 transitions. [2019-10-13 21:16:35,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1674 transitions. [2019-10-13 21:16:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:16:35,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:35,300 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:35,300 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:35,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:35,300 INFO L82 PathProgramCache]: Analyzing trace with hash 211331651, now seen corresponding path program 2 times [2019-10-13 21:16:35,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:35,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557645932] [2019-10-13 21:16:35,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:35,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557645932] [2019-10-13 21:16:35,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375525735] [2019-10-13 21:16:35,527 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:36,046 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:36,046 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:36,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:36,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:36,265 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:36,879 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:36,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:36,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359633891] [2019-10-13 21:16:36,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:36,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:36,885 INFO L87 Difference]: Start difference. First operand 1281 states and 1674 transitions. Second operand 14 states. [2019-10-13 21:16:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:39,181 INFO L93 Difference]: Finished difference Result 3795 states and 4997 transitions. [2019-10-13 21:16:39,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:39,182 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2019-10-13 21:16:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:39,211 INFO L225 Difference]: With dead ends: 3795 [2019-10-13 21:16:39,211 INFO L226 Difference]: Without dead ends: 3788 [2019-10-13 21:16:39,216 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2019-10-13 21:16:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2767. [2019-10-13 21:16:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2767 states. [2019-10-13 21:16:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3696 transitions. [2019-10-13 21:16:39,500 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3696 transitions. Word has length 167 [2019-10-13 21:16:39,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:39,500 INFO L462 AbstractCegarLoop]: Abstraction has 2767 states and 3696 transitions. [2019-10-13 21:16:39,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3696 transitions. [2019-10-13 21:16:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:16:39,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:39,511 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:39,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:39,721 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1415451547, now seen corresponding path program 1 times [2019-10-13 21:16:39,723 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:39,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985774350] [2019-10-13 21:16:39,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:39,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:39,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:39,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985774350] [2019-10-13 21:16:39,901 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865977132] [2019-10-13 21:16:39,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:40,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:40,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:40,569 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:40,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:40,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:41,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:41,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:41,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602555798] [2019-10-13 21:16:41,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:41,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:41,009 INFO L87 Difference]: Start difference. First operand 2767 states and 3696 transitions. Second operand 7 states. [2019-10-13 21:16:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,312 INFO L93 Difference]: Finished difference Result 5507 states and 7363 transitions. [2019-10-13 21:16:42,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:42,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-10-13 21:16:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,336 INFO L225 Difference]: With dead ends: 5507 [2019-10-13 21:16:42,336 INFO L226 Difference]: Without dead ends: 2779 [2019-10-13 21:16:42,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2019-10-13 21:16:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2769. [2019-10-13 21:16:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2769 states. [2019-10-13 21:16:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3699 transitions. [2019-10-13 21:16:42,557 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3699 transitions. Word has length 170 [2019-10-13 21:16:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,559 INFO L462 AbstractCegarLoop]: Abstraction has 2769 states and 3699 transitions. [2019-10-13 21:16:42,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3699 transitions. [2019-10-13 21:16:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:16:42,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,573 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:42,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:42,791 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1281596506, now seen corresponding path program 1 times [2019-10-13 21:16:42,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307302957] [2019-10-13 21:16:42,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:42,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307302957] [2019-10-13 21:16:42,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007666077] [2019-10-13 21:16:42,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:43,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:16:43,651 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:43,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:44,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:44,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:44,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:44,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:16:44,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653055020] [2019-10-13 21:16:44,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:44,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:44,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:44,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:44,242 INFO L87 Difference]: Start difference. First operand 2769 states and 3699 transitions. Second operand 9 states. [2019-10-13 21:16:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:45,794 INFO L93 Difference]: Finished difference Result 5514 states and 7373 transitions. [2019-10-13 21:16:45,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:45,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2019-10-13 21:16:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:45,814 INFO L225 Difference]: With dead ends: 5514 [2019-10-13 21:16:45,814 INFO L226 Difference]: Without dead ends: 2787 [2019-10-13 21:16:45,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2019-10-13 21:16:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2019-10-13 21:16:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2019-10-13 21:16:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3715 transitions. [2019-10-13 21:16:46,105 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3715 transitions. Word has length 171 [2019-10-13 21:16:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:46,106 INFO L462 AbstractCegarLoop]: Abstraction has 2785 states and 3715 transitions. [2019-10-13 21:16:46,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3715 transitions. [2019-10-13 21:16:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:16:46,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:46,114 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:16:46,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:46,330 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash -239640913, now seen corresponding path program 1 times [2019-10-13 21:16:46,332 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:46,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058314626] [2019-10-13 21:16:46,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:46,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:46,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:46,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058314626] [2019-10-13 21:16:46,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136261342] [2019-10-13 21:16:46,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:47,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:47,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:47,218 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:47,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:47,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:47,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:47,819 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:47,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:16:47,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958087106] [2019-10-13 21:16:47,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:47,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:16:47,821 INFO L87 Difference]: Start difference. First operand 2785 states and 3715 transitions. Second operand 16 states. [2019-10-13 21:16:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:49,433 INFO L93 Difference]: Finished difference Result 5506 states and 7354 transitions. [2019-10-13 21:16:49,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:49,434 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-10-13 21:16:49,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:49,453 INFO L225 Difference]: With dead ends: 5506 [2019-10-13 21:16:49,454 INFO L226 Difference]: Without dead ends: 2809 [2019-10-13 21:16:49,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2019-10-13 21:16:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2807. [2019-10-13 21:16:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2019-10-13 21:16:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3740 transitions. [2019-10-13 21:16:49,617 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3740 transitions. Word has length 172 [2019-10-13 21:16:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:49,618 INFO L462 AbstractCegarLoop]: Abstraction has 2807 states and 3740 transitions. [2019-10-13 21:16:49,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3740 transitions. [2019-10-13 21:16:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:16:49,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:49,627 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:16:49,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:49,835 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:49,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash -194664184, now seen corresponding path program 2 times [2019-10-13 21:16:49,836 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:49,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725833363] [2019-10-13 21:16:49,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:49,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:49,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:50,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725833363] [2019-10-13 21:16:50,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032151513] [2019-10-13 21:16:50,018 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:50,562 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:16:50,562 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:50,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:50,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:50,689 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:51,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:51,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:51,174 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:51,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-13 21:16:51,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634959444] [2019-10-13 21:16:51,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:16:51,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:51,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:16:51,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:51,176 INFO L87 Difference]: Start difference. First operand 2807 states and 3740 transitions. Second operand 11 states. [2019-10-13 21:16:52,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:52,819 INFO L93 Difference]: Finished difference Result 5278 states and 6996 transitions. [2019-10-13 21:16:52,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:52,822 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2019-10-13 21:16:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:52,840 INFO L225 Difference]: With dead ends: 5278 [2019-10-13 21:16:52,841 INFO L226 Difference]: Without dead ends: 2595 [2019-10-13 21:16:52,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 336 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:16:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-10-13 21:16:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2587. [2019-10-13 21:16:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-10-13 21:16:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3392 transitions. [2019-10-13 21:16:52,990 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3392 transitions. Word has length 173 [2019-10-13 21:16:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:52,991 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3392 transitions. [2019-10-13 21:16:52,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:16:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3392 transitions. [2019-10-13 21:16:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:16:52,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:52,997 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:16:53,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:53,207 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash 2066785607, now seen corresponding path program 1 times [2019-10-13 21:16:53,208 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:53,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134790338] [2019-10-13 21:16:53,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:53,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:53,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:53,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134790338] [2019-10-13 21:16:53,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114589745] [2019-10-13 21:16:53,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:53,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:53,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:53,988 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:54,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:54,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:54,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:54,529 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:54,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 20 [2019-10-13 21:16:54,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152442868] [2019-10-13 21:16:54,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:54,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:54,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:54,531 INFO L87 Difference]: Start difference. First operand 2587 states and 3392 transitions. Second operand 15 states.