java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:26,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:26,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:26,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:26,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:26,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:26,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:26,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:26,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:26,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:26,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:26,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:26,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:26,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:26,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:26,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:26,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:26,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:26,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:26,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:26,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:26,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:26,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:26,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:26,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:26,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:26,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:26,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:26,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:26,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:26,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:26,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:26,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:26,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:26,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:26,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:26,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:26,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:26,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:26,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:26,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:26,352 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 [2019-10-15 01:14:26,381 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:26,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:26,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:26,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:26,383 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:26,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:26,384 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:26,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:26,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:26,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:26,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:26,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:26,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:26,385 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:26,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:26,385 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:26,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:26,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:26,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:26,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:26,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:26,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:26,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:26,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:26,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:26,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:26,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:26,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:26,388 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 [2019-10-15 01:14:26,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:26,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:26,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:26,715 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:26,715 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:26,716 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c [2019-10-15 01:14:26,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba68f3b01/2d2dbd929f1645f8b252370d2ffb397c/FLAGc500d7b6f [2019-10-15 01:14:27,406 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:27,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c [2019-10-15 01:14:27,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba68f3b01/2d2dbd929f1645f8b252370d2ffb397c/FLAGc500d7b6f [2019-10-15 01:14:27,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba68f3b01/2d2dbd929f1645f8b252370d2ffb397c [2019-10-15 01:14:27,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:27,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:27,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:27,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:27,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:27,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:27" (1/1) ... [2019-10-15 01:14:27,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507cfa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:27, skipping insertion in model container [2019-10-15 01:14:27,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:27" (1/1) ... [2019-10-15 01:14:27,683 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:27,781 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:28,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:28,603 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:28,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:28,823 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:28,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28 WrapperNode [2019-10-15 01:14:28,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:28,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:28,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:28,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:28,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (1/1) ... [2019-10-15 01:14:28,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:28,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:28,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:28,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:28,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (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 [2019-10-15 01:14:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:14:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:14:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:14:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:14:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:31,285 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:31,286 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:31,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:31 BoogieIcfgContainer [2019-10-15 01:14:31,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:31,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:31,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:31,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:31,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:27" (1/3) ... [2019-10-15 01:14:31,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aed2265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:31, skipping insertion in model container [2019-10-15 01:14:31,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:28" (2/3) ... [2019-10-15 01:14:31,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aed2265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:31, skipping insertion in model container [2019-10-15 01:14:31,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:31" (3/3) ... [2019-10-15 01:14:31,299 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product19.cil.c [2019-10-15 01:14:31,310 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:31,325 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:31,337 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:31,381 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:31,381 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:31,381 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:31,381 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:31,381 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:31,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:31,382 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:31,382 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states. [2019-10-15 01:14:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:14:31,441 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:31,443 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:31,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1399924535, now seen corresponding path program 1 times [2019-10-15 01:14:31,463 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:31,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897054532] [2019-10-15 01:14:31,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:31,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:31,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:32,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897054532] [2019-10-15 01:14:32,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:32,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:32,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811805856] [2019-10-15 01:14:32,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:32,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:32,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:32,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:32,199 INFO L87 Difference]: Start difference. First operand 506 states. Second operand 2 states. [2019-10-15 01:14:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,276 INFO L93 Difference]: Finished difference Result 754 states and 989 transitions. [2019-10-15 01:14:32,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:32,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-10-15 01:14:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,304 INFO L225 Difference]: With dead ends: 754 [2019-10-15 01:14:32,304 INFO L226 Difference]: Without dead ends: 483 [2019-10-15 01:14:32,311 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 [2019-10-15 01:14:32,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-10-15 01:14:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2019-10-15 01:14:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-10-15 01:14:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 637 transitions. [2019-10-15 01:14:32,420 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 637 transitions. Word has length 170 [2019-10-15 01:14:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,424 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 637 transitions. [2019-10-15 01:14:32,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 637 transitions. [2019-10-15 01:14:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:14:32,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,430 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:32,431 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1985432290, now seen corresponding path program 1 times [2019-10-15 01:14:32,431 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976332470] [2019-10-15 01:14:32,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:32,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976332470] [2019-10-15 01:14:32,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:32,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:32,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960166067] [2019-10-15 01:14:32,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:32,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:32,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:32,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:32,771 INFO L87 Difference]: Start difference. First operand 483 states and 637 transitions. Second operand 3 states. [2019-10-15 01:14:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,838 INFO L93 Difference]: Finished difference Result 737 states and 954 transitions. [2019-10-15 01:14:32,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:32,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:14:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,844 INFO L225 Difference]: With dead ends: 737 [2019-10-15 01:14:32,844 INFO L226 Difference]: Without dead ends: 486 [2019-10-15 01:14:32,847 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 [2019-10-15 01:14:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-10-15 01:14:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 485. [2019-10-15 01:14:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-15 01:14:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 639 transitions. [2019-10-15 01:14:32,906 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 639 transitions. Word has length 171 [2019-10-15 01:14:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,909 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 639 transitions. [2019-10-15 01:14:32,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 639 transitions. [2019-10-15 01:14:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:14:32,914 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,915 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:32,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,915 INFO L82 PathProgramCache]: Analyzing trace with hash 582779830, now seen corresponding path program 1 times [2019-10-15 01:14:32,916 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238910783] [2019-10-15 01:14:32,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:14:33,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238910783] [2019-10-15 01:14:33,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:33,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:33,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509412995] [2019-10-15 01:14:33,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:33,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:33,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:33,110 INFO L87 Difference]: Start difference. First operand 485 states and 639 transitions. Second operand 3 states. [2019-10-15 01:14:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:33,176 INFO L93 Difference]: Finished difference Result 946 states and 1276 transitions. [2019-10-15 01:14:33,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:33,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-15 01:14:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:33,188 INFO L225 Difference]: With dead ends: 946 [2019-10-15 01:14:33,188 INFO L226 Difference]: Without dead ends: 526 [2019-10-15 01:14:33,192 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 [2019-10-15 01:14:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-10-15 01:14:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 525. [2019-10-15 01:14:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2019-10-15 01:14:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 708 transitions. [2019-10-15 01:14:33,261 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 708 transitions. Word has length 177 [2019-10-15 01:14:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:33,263 INFO L462 AbstractCegarLoop]: Abstraction has 525 states and 708 transitions. [2019-10-15 01:14:33,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 708 transitions. [2019-10-15 01:14:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:14:33,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:33,277 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:33,278 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:33,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:33,278 INFO L82 PathProgramCache]: Analyzing trace with hash 452092045, now seen corresponding path program 1 times [2019-10-15 01:14:33,279 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:33,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686637693] [2019-10-15 01:14:33,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:33,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686637693] [2019-10-15 01:14:33,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:33,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:14:33,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354222088] [2019-10-15 01:14:33,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:33,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:33,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:33,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:14:33,755 INFO L87 Difference]: Start difference. First operand 525 states and 708 transitions. Second operand 12 states. [2019-10-15 01:14:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:43,991 INFO L93 Difference]: Finished difference Result 2472 states and 3221 transitions. [2019-10-15 01:14:43,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-15 01:14:43,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2019-10-15 01:14:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:44,006 INFO L225 Difference]: With dead ends: 2472 [2019-10-15 01:14:44,006 INFO L226 Difference]: Without dead ends: 1949 [2019-10-15 01:14:44,010 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2019-10-15 01:14:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2019-10-15 01:14:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1930. [2019-10-15 01:14:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2019-10-15 01:14:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2495 transitions. [2019-10-15 01:14:44,116 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2495 transitions. Word has length 178 [2019-10-15 01:14:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:44,117 INFO L462 AbstractCegarLoop]: Abstraction has 1930 states and 2495 transitions. [2019-10-15 01:14:44,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2495 transitions. [2019-10-15 01:14:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:14:44,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:44,121 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:44,122 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:44,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:44,122 INFO L82 PathProgramCache]: Analyzing trace with hash 748374271, now seen corresponding path program 1 times [2019-10-15 01:14:44,122 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:44,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645252931] [2019-10-15 01:14:44,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:44,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645252931] [2019-10-15 01:14:44,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:44,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:14:44,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119441307] [2019-10-15 01:14:44,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:44,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:44,472 INFO L87 Difference]: Start difference. First operand 1930 states and 2495 transitions. Second operand 16 states. [2019-10-15 01:14:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:44,841 INFO L93 Difference]: Finished difference Result 3245 states and 4177 transitions. [2019-10-15 01:14:44,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:44,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 179 [2019-10-15 01:14:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:44,852 INFO L225 Difference]: With dead ends: 3245 [2019-10-15 01:14:44,852 INFO L226 Difference]: Without dead ends: 1277 [2019-10-15 01:14:44,858 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:14:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2019-10-15 01:14:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1159. [2019-10-15 01:14:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2019-10-15 01:14:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1511 transitions. [2019-10-15 01:14:44,926 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1511 transitions. Word has length 179 [2019-10-15 01:14:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:44,928 INFO L462 AbstractCegarLoop]: Abstraction has 1159 states and 1511 transitions. [2019-10-15 01:14:44,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1511 transitions. [2019-10-15 01:14:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:14:44,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:44,934 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:44,935 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:44,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:44,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2091426612, now seen corresponding path program 1 times [2019-10-15 01:14:44,936 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:44,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406605240] [2019-10-15 01:14:44,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:44,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:14:47,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406605240] [2019-10-15 01:14:47,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87014824] [2019-10-15 01:14:47,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:47,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:47,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:14:48,218 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:48,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:48,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:48,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:49,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:49,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [48, 9] total 60 [2019-10-15 01:14:49,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517281158] [2019-10-15 01:14:49,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:49,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:49,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:49,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2019-10-15 01:14:49,055 INFO L87 Difference]: Start difference. First operand 1159 states and 1511 transitions. Second operand 9 states. [2019-10-15 01:14:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:51,193 INFO L93 Difference]: Finished difference Result 2296 states and 3002 transitions. [2019-10-15 01:14:51,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:51,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 188 [2019-10-15 01:14:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:51,201 INFO L225 Difference]: With dead ends: 2296 [2019-10-15 01:14:51,201 INFO L226 Difference]: Without dead ends: 1173 [2019-10-15 01:14:51,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 364 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2019-10-15 01:14:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2019-10-15 01:14:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2019-10-15 01:14:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-10-15 01:14:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1529 transitions. [2019-10-15 01:14:51,344 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1529 transitions. Word has length 188 [2019-10-15 01:14:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:51,344 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 1529 transitions. [2019-10-15 01:14:51,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1529 transitions. [2019-10-15 01:14:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:14:51,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:51,349 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:51,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:51,559 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:51,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1597586046, now seen corresponding path program 1 times [2019-10-15 01:14:51,559 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:51,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612067827] [2019-10-15 01:14:51,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:51,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:51,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:53,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612067827] [2019-10-15 01:14:53,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426143525] [2019-10-15 01:14:53,284 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 [2019-10-15 01:14:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:53,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:53,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:14:54,116 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:54,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:54,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:54,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:54,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [46, 7] total 54 [2019-10-15 01:14:54,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987458090] [2019-10-15 01:14:54,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:54,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:54,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:54,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2730, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 01:14:54,577 INFO L87 Difference]: Start difference. First operand 1173 states and 1529 transitions. Second operand 7 states. [2019-10-15 01:14:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:56,190 INFO L93 Difference]: Finished difference Result 2297 states and 3006 transitions. [2019-10-15 01:14:56,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:56,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-15 01:14:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:56,204 INFO L225 Difference]: With dead ends: 2297 [2019-10-15 01:14:56,205 INFO L226 Difference]: Without dead ends: 1175 [2019-10-15 01:14:56,211 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 371 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=150, Invalid=2930, Unknown=0, NotChecked=0, Total=3080 [2019-10-15 01:14:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-15 01:14:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2019-10-15 01:14:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-15 01:14:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1532 transitions. [2019-10-15 01:14:56,280 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1532 transitions. Word has length 189 [2019-10-15 01:14:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:56,281 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1532 transitions. [2019-10-15 01:14:56,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1532 transitions. [2019-10-15 01:14:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:14:56,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:56,288 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:56,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:56,497 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:56,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:56,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1048581025, now seen corresponding path program 1 times [2019-10-15 01:14:56,498 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:56,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379424503] [2019-10-15 01:14:56,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:56,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:56,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 01:14:58,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379424503] [2019-10-15 01:14:58,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:58,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2019-10-15 01:14:58,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185033498] [2019-10-15 01:14:58,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-10-15 01:14:58,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-10-15 01:14:58,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1557, Unknown=0, NotChecked=0, Total=1640 [2019-10-15 01:14:58,440 INFO L87 Difference]: Start difference. First operand 1175 states and 1532 transitions. Second operand 41 states.