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_spec0_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:12:00,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:12:00,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:12:00,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:12:00,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:12:00,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:12:00,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:12:00,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:12:00,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:12:00,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:12:00,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:12:00,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:12:00,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:12:00,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:12:00,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:12:00,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:12:00,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:12:00,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:12:00,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:12:00,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:12:00,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:12:00,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:12:00,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:12:00,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:12:00,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:12:00,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:12:00,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:12:00,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:12:00,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:12:00,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:12:00,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:12:00,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:12:00,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:12:00,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:12:00,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:12:00,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:12:00,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:12:00,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:12:00,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:12:00,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:12:00,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:12:00,225 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 01:12:00,245 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:12:00,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:12:00,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:12:00,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:12:00,248 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:12:00,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:12:00,248 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:12:00,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:12:00,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:12:00,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:12:00,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:12:00,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:12:00,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:12:00,251 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:12:00,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:12:00,251 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:12:00,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:12:00,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:12:00,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:12:00,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:12:00,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:12:00,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:12:00,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:12:00,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:12:00,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:12:00,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:12:00,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:12:00,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:12:00,254 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 01:12:00,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:12:00,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:12:00,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:12:00,559 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:12:00,560 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:12:00,560 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product33.cil.c [2019-10-15 01:12:00,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86099be8/db2f6bdfdccc49d798e8ba095f984b45/FLAGa2315db71 [2019-10-15 01:12:01,301 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:12:01,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product33.cil.c [2019-10-15 01:12:01,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86099be8/db2f6bdfdccc49d798e8ba095f984b45/FLAGa2315db71 [2019-10-15 01:12:01,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86099be8/db2f6bdfdccc49d798e8ba095f984b45 [2019-10-15 01:12:01,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:12:01,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:12:01,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:01,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:12:01,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:12:01,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:01" (1/1) ... [2019-10-15 01:12:01,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247dfb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:01, skipping insertion in model container [2019-10-15 01:12:01,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:01" (1/1) ... [2019-10-15 01:12:01,461 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:12:01,564 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:12:02,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:02,435 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:12:02,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:02,666 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:12:02,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02 WrapperNode [2019-10-15 01:12:02,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:02,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:12:02,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:12:02,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:12:02,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (1/1) ... [2019-10-15 01:12:02,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:12:02,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:12:02,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:12:02,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:12:02,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (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 01:12:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:12:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:12:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:12:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:12:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:12:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:12:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:12:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:12:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:12:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:12:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:12:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:12:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:12:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:12:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:12:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:12:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:12:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:12:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:12:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:12:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:12:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:12:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:12:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:12:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:12:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:12:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:12:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:12:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:12:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:12:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:12:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:12:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:12:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:12:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:12:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:12:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:12:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:12:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:12:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-10-15 01:12:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:12:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:12:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:12:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:12:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:12:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:12:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:12:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:12:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:12:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:12:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:12:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:12:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:12:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:12:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:12:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:12:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:12:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:12:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:12:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:12:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:12:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:12:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:12:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:12:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:12:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:12:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:12:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:12:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:12:03,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:12:03,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:12:03,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:12:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:12:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:12:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:12:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:12:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:12:03,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:12:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:12:03,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:12:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:12:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:12:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:12:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:03,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:12:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:12:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:12:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:12:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:12:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:12:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:12:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:12:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:12:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:12:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:12:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:12:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:12:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:12:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:12:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:12:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:12:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:12:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:12:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:12:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:12:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:12:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:12:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:12:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:12:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:12:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:12:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:12:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:12:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:12:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:12:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:12:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:12:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:12:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:12:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:12:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:12:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:12:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:12:03,079 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:12:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:12:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:12:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:12:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:12:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:12:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:12:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:12:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:12:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:12:03,085 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:12:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:12:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:12:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:12:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:12:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:12:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:12:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:12:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:12:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:12:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:12:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:12:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:12:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:12:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:12:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:12:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:12:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:12:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:12:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:12:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:12:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:12:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:12:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:12:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:12:03,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:12:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:12:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:12:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:12:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:12:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:12:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:12:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:12:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:12:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:12:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:12:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:12:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:12:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:12:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:12:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:12:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:12:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:12:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:12:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:12:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:12:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:12:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:12:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:12:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:12:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:12:05,446 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:12:05,447 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:12:05,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:05 BoogieIcfgContainer [2019-10-15 01:12:05,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:12:05,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:12:05,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:12:05,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:12:05,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:12:01" (1/3) ... [2019-10-15 01:12:05,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a264690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:05, skipping insertion in model container [2019-10-15 01:12:05,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:02" (2/3) ... [2019-10-15 01:12:05,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a264690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:05, skipping insertion in model container [2019-10-15 01:12:05,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:05" (3/3) ... [2019-10-15 01:12:05,463 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product33.cil.c [2019-10-15 01:12:05,479 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:12:05,491 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:12:05,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:12:05,544 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:12:05,545 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:12:05,545 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:12:05,545 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:12:05,546 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:12:05,548 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:12:05,548 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:12:05,548 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:12:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-15 01:12:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:12:05,637 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:05,639 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:05,642 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash -225515264, now seen corresponding path program 1 times [2019-10-15 01:12:05,657 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:05,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362179461] [2019-10-15 01:12:05,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:05,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:05,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:06,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362179461] [2019-10-15 01:12:06,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:06,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:12:06,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038986436] [2019-10-15 01:12:06,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:12:06,375 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:12:06,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:12:06,393 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 2 states. [2019-10-15 01:12:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:06,476 INFO L93 Difference]: Finished difference Result 905 states and 1190 transitions. [2019-10-15 01:12:06,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:12:06,478 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 232 [2019-10-15 01:12:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:06,503 INFO L225 Difference]: With dead ends: 905 [2019-10-15 01:12:06,503 INFO L226 Difference]: Without dead ends: 564 [2019-10-15 01:12:06,511 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 01:12:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-15 01:12:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2019-10-15 01:12:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-10-15 01:12:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 744 transitions. [2019-10-15 01:12:06,634 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 744 transitions. Word has length 232 [2019-10-15 01:12:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:06,637 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 744 transitions. [2019-10-15 01:12:06,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:12:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 744 transitions. [2019-10-15 01:12:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:12:06,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:06,644 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:06,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:06,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1451432834, now seen corresponding path program 1 times [2019-10-15 01:12:06,646 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:06,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670988091] [2019-10-15 01:12:06,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:06,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:06,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:07,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670988091] [2019-10-15 01:12:07,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:07,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:07,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48328651] [2019-10-15 01:12:07,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:07,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:07,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:07,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:07,035 INFO L87 Difference]: Start difference. First operand 564 states and 744 transitions. Second operand 3 states. [2019-10-15 01:12:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:07,150 INFO L93 Difference]: Finished difference Result 888 states and 1154 transitions. [2019-10-15 01:12:07,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:07,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-10-15 01:12:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:07,163 INFO L225 Difference]: With dead ends: 888 [2019-10-15 01:12:07,164 INFO L226 Difference]: Without dead ends: 567 [2019-10-15 01:12:07,170 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 01:12:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-10-15 01:12:07,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2019-10-15 01:12:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-10-15 01:12:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 746 transitions. [2019-10-15 01:12:07,226 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 746 transitions. Word has length 233 [2019-10-15 01:12:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:07,228 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 746 transitions. [2019-10-15 01:12:07,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 746 transitions. [2019-10-15 01:12:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:12:07,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:07,237 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:07,237 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1811771772, now seen corresponding path program 1 times [2019-10-15 01:12:07,238 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:07,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076009818] [2019-10-15 01:12:07,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:07,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:07,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:07,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076009818] [2019-10-15 01:12:07,610 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:07,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:07,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063289608] [2019-10-15 01:12:07,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:07,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:07,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:07,616 INFO L87 Difference]: Start difference. First operand 566 states and 746 transitions. Second operand 3 states. [2019-10-15 01:12:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:07,678 INFO L93 Difference]: Finished difference Result 1110 states and 1493 transitions. [2019-10-15 01:12:07,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:07,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2019-10-15 01:12:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:07,688 INFO L225 Difference]: With dead ends: 1110 [2019-10-15 01:12:07,688 INFO L226 Difference]: Without dead ends: 609 [2019-10-15 01:12:07,691 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 01:12:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-15 01:12:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 608. [2019-10-15 01:12:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-15 01:12:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 818 transitions. [2019-10-15 01:12:07,737 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 818 transitions. Word has length 245 [2019-10-15 01:12:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:07,742 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 818 transitions. [2019-10-15 01:12:07,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 818 transitions. [2019-10-15 01:12:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 01:12:07,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:07,750 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:07,750 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:07,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2089199776, now seen corresponding path program 1 times [2019-10-15 01:12:07,752 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:07,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628896354] [2019-10-15 01:12:07,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:07,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:07,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:12:08,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628896354] [2019-10-15 01:12:08,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:08,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:08,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94675959] [2019-10-15 01:12:08,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:08,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:08,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:08,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:08,042 INFO L87 Difference]: Start difference. First operand 608 states and 818 transitions. Second operand 3 states. [2019-10-15 01:12:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:08,088 INFO L93 Difference]: Finished difference Result 1233 states and 1704 transitions. [2019-10-15 01:12:08,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:08,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2019-10-15 01:12:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:08,094 INFO L225 Difference]: With dead ends: 1233 [2019-10-15 01:12:08,094 INFO L226 Difference]: Without dead ends: 690 [2019-10-15 01:12:08,096 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 01:12:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-15 01:12:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 689. [2019-10-15 01:12:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2019-10-15 01:12:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 956 transitions. [2019-10-15 01:12:08,134 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 956 transitions. Word has length 246 [2019-10-15 01:12:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:08,135 INFO L462 AbstractCegarLoop]: Abstraction has 689 states and 956 transitions. [2019-10-15 01:12:08,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 956 transitions. [2019-10-15 01:12:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-15 01:12:08,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:08,141 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:08,141 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:08,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1330390200, now seen corresponding path program 1 times [2019-10-15 01:12:08,142 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:08,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411998242] [2019-10-15 01:12:08,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:08,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:08,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:12:08,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411998242] [2019-10-15 01:12:08,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:08,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-15 01:12:08,635 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830840835] [2019-10-15 01:12:08,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:12:08,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:12:08,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:08,637 INFO L87 Difference]: Start difference. First operand 689 states and 956 transitions. Second operand 19 states. [2019-10-15 01:12:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:14,097 INFO L93 Difference]: Finished difference Result 2335 states and 3224 transitions. [2019-10-15 01:12:14,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-15 01:12:14,098 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 249 [2019-10-15 01:12:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:14,122 INFO L225 Difference]: With dead ends: 2335 [2019-10-15 01:12:14,122 INFO L226 Difference]: Without dead ends: 2027 [2019-10-15 01:12:14,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-15 01:12:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2019-10-15 01:12:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1990. [2019-10-15 01:12:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2019-10-15 01:12:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2766 transitions. [2019-10-15 01:12:14,329 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2766 transitions. Word has length 249 [2019-10-15 01:12:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:14,330 INFO L462 AbstractCegarLoop]: Abstraction has 1990 states and 2766 transitions. [2019-10-15 01:12:14,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:12:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2766 transitions. [2019-10-15 01:12:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-15 01:12:14,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:14,346 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:14,346 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:14,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1816922894, now seen corresponding path program 1 times [2019-10-15 01:12:14,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:14,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990108952] [2019-10-15 01:12:14,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:14,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:14,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 01:12:14,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990108952] [2019-10-15 01:12:14,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:14,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:12:14,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401239147] [2019-10-15 01:12:14,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:12:14,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:14,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:12:14,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:12:14,754 INFO L87 Difference]: Start difference. First operand 1990 states and 2766 transitions. Second operand 11 states. [2019-10-15 01:12:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:15,343 INFO L93 Difference]: Finished difference Result 3347 states and 4565 transitions. [2019-10-15 01:12:15,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:12:15,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 250 [2019-10-15 01:12:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:15,365 INFO L225 Difference]: With dead ends: 3347 [2019-10-15 01:12:15,365 INFO L226 Difference]: Without dead ends: 2048 [2019-10-15 01:12:15,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2019-10-15 01:12:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2048. [2019-10-15 01:12:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2019-10-15 01:12:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2859 transitions. [2019-10-15 01:12:15,515 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2859 transitions. Word has length 250 [2019-10-15 01:12:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:15,516 INFO L462 AbstractCegarLoop]: Abstraction has 2048 states and 2859 transitions. [2019-10-15 01:12:15,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:12:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2859 transitions. [2019-10-15 01:12:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-15 01:12:15,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:15,528 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:15,532 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1990629027, now seen corresponding path program 1 times [2019-10-15 01:12:15,533 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:15,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409140098] [2019-10-15 01:12:15,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:15,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:15,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:12:15,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409140098] [2019-10-15 01:12:15,891 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:15,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:12:15,891 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995128951] [2019-10-15 01:12:15,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:12:15,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:12:15,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:12:15,894 INFO L87 Difference]: Start difference. First operand 2048 states and 2859 transitions. Second operand 16 states. [2019-10-15 01:12:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:16,304 INFO L93 Difference]: Finished difference Result 3423 states and 4679 transitions. [2019-10-15 01:12:16,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:12:16,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 250 [2019-10-15 01:12:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:16,320 INFO L225 Difference]: With dead ends: 3423 [2019-10-15 01:12:16,321 INFO L226 Difference]: Without dead ends: 2080 [2019-10-15 01:12:16,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 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 01:12:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2019-10-15 01:12:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2019-10-15 01:12:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2080 states. [2019-10-15 01:12:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2892 transitions. [2019-10-15 01:12:16,447 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2892 transitions. Word has length 250 [2019-10-15 01:12:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:16,447 INFO L462 AbstractCegarLoop]: Abstraction has 2080 states and 2892 transitions. [2019-10-15 01:12:16,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:12:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2892 transitions. [2019-10-15 01:12:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-15 01:12:16,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:16,458 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:16,458 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:16,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:16,459 INFO L82 PathProgramCache]: Analyzing trace with hash 254235924, now seen corresponding path program 1 times [2019-10-15 01:12:16,459 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:16,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105819067] [2019-10-15 01:12:16,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:16,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:16,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:12:16,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105819067] [2019-10-15 01:12:16,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:16,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:12:16,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160100717] [2019-10-15 01:12:16,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:12:16,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:12:16,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:12:16,860 INFO L87 Difference]: Start difference. First operand 2080 states and 2892 transitions. Second operand 15 states. [2019-10-15 01:12:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:20,629 INFO L93 Difference]: Finished difference Result 3463 states and 4723 transitions. [2019-10-15 01:12:20,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-15 01:12:20,634 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 250 [2019-10-15 01:12:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:20,648 INFO L225 Difference]: With dead ends: 3463 [2019-10-15 01:12:20,648 INFO L226 Difference]: Without dead ends: 2164 [2019-10-15 01:12:20,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-15 01:12:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2019-10-15 01:12:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2109. [2019-10-15 01:12:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2019-10-15 01:12:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2939 transitions. [2019-10-15 01:12:20,774 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2939 transitions. Word has length 250 [2019-10-15 01:12:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:20,775 INFO L462 AbstractCegarLoop]: Abstraction has 2109 states and 2939 transitions. [2019-10-15 01:12:20,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:12:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2939 transitions. [2019-10-15 01:12:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-15 01:12:20,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:20,786 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:20,786 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash 281898935, now seen corresponding path program 1 times [2019-10-15 01:12:20,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:20,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010658988] [2019-10-15 01:12:20,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:20,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:20,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 01:12:21,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010658988] [2019-10-15 01:12:21,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:21,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:12:21,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663525995] [2019-10-15 01:12:21,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:12:21,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:21,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:12:21,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:12:21,180 INFO L87 Difference]: Start difference. First operand 2109 states and 2939 transitions. Second operand 5 states. [2019-10-15 01:12:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:22,417 INFO L93 Difference]: Finished difference Result 5198 states and 7180 transitions. [2019-10-15 01:12:22,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:12:22,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2019-10-15 01:12:22,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:22,446 INFO L225 Difference]: With dead ends: 5198 [2019-10-15 01:12:22,447 INFO L226 Difference]: Without dead ends: 4515 [2019-10-15 01:12:22,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:12:22,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2019-10-15 01:12:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4484. [2019-10-15 01:12:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4484 states. [2019-10-15 01:12:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 6217 transitions. [2019-10-15 01:12:22,679 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 6217 transitions. Word has length 250 [2019-10-15 01:12:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:22,680 INFO L462 AbstractCegarLoop]: Abstraction has 4484 states and 6217 transitions. [2019-10-15 01:12:22,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:12:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 6217 transitions. [2019-10-15 01:12:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-15 01:12:22,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:22,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:22,694 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:22,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2117741782, now seen corresponding path program 1 times [2019-10-15 01:12:22,695 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:22,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659100526] [2019-10-15 01:12:22,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:22,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:22,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:22,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659100526] [2019-10-15 01:12:22,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754019546] [2019-10-15 01:12:22,895 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 01:12:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:23,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:12:23,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:12:23,860 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:24,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:12:24,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:24,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:24,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:12:24,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:12:24,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216414551] [2019-10-15 01:12:24,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:12:24,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:24,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:12:24,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:12:24,579 INFO L87 Difference]: Start difference. First operand 4484 states and 6217 transitions. Second operand 9 states. [2019-10-15 01:12:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:27,003 INFO L93 Difference]: Finished difference Result 8946 states and 12414 transitions. [2019-10-15 01:12:27,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:12:27,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2019-10-15 01:12:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:27,031 INFO L225 Difference]: With dead ends: 8946 [2019-10-15 01:12:27,031 INFO L226 Difference]: Without dead ends: 4498 [2019-10-15 01:12:27,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:12:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2019-10-15 01:12:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4498. [2019-10-15 01:12:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2019-10-15 01:12:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 6235 transitions. [2019-10-15 01:12:27,352 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 6235 transitions. Word has length 250 [2019-10-15 01:12:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:27,353 INFO L462 AbstractCegarLoop]: Abstraction has 4498 states and 6235 transitions. [2019-10-15 01:12:27,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:12:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 6235 transitions. [2019-10-15 01:12:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-15 01:12:27,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:27,370 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:27,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:27,582 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:27,582 INFO L82 PathProgramCache]: Analyzing trace with hash -835855440, now seen corresponding path program 1 times [2019-10-15 01:12:27,582 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:27,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309037846] [2019-10-15 01:12:27,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:27,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:27,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:27,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309037846] [2019-10-15 01:12:27,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181186208] [2019-10-15 01:12:27,869 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 01:12:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:28,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:12:28,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:12:28,733 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:29,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:29,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:29,131 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:12:29,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:12:29,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220947192] [2019-10-15 01:12:29,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:12:29,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:29,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:12:29,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:12:29,133 INFO L87 Difference]: Start difference. First operand 4498 states and 6235 transitions. Second operand 7 states. [2019-10-15 01:12:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:30,362 INFO L93 Difference]: Finished difference Result 8951 states and 12434 transitions. [2019-10-15 01:12:30,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:12:30,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2019-10-15 01:12:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:30,390 INFO L225 Difference]: With dead ends: 8951 [2019-10-15 01:12:30,391 INFO L226 Difference]: Without dead ends: 4504 [2019-10-15 01:12:30,406 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 500 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:12:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2019-10-15 01:12:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 4504. [2019-10-15 01:12:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2019-10-15 01:12:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6242 transitions. [2019-10-15 01:12:30,653 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6242 transitions. Word has length 251 [2019-10-15 01:12:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:30,654 INFO L462 AbstractCegarLoop]: Abstraction has 4504 states and 6242 transitions. [2019-10-15 01:12:30,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:12:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6242 transitions. [2019-10-15 01:12:30,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-10-15 01:12:30,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:30,669 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:30,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:30,877 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:30,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1389520233, now seen corresponding path program 1 times [2019-10-15 01:12:30,878 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:30,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204308024] [2019-10-15 01:12:30,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:30,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:30,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:31,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204308024] [2019-10-15 01:12:31,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453841329] [2019-10-15 01:12:31,156 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 [2019-10-15 01:12:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:31,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:12:31,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:12:31,888 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:32,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:12:32,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:32,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:12:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:32,501 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:12:32,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:12:32,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034376045] [2019-10-15 01:12:32,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:12:32,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:32,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:12:32,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:12:32,503 INFO L87 Difference]: Start difference. First operand 4504 states and 6242 transitions. Second operand 16 states.