java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:26,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:26,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:26,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:26,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:26,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:26,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:26,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:26,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:26,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:26,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:26,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:26,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:26,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:26,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:26,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:26,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:26,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:26,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:26,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:26,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:26,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:26,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:26,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:26,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:26,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:26,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:26,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:26,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:26,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:26,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:26,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:26,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:26,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:26,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:26,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:26,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:26,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:26,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:26,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:26,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:26,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:26,401 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:26,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:26,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:26,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:26,404 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:26,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:26,404 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:26,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:26,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:26,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:26,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:26,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:26,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:26,407 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:26,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:26,407 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:26,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:26,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:26,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:26,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:26,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:26,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:26,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:26,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:26,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:26,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:26,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:26,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:26,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:26,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:26,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:26,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:26,717 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:26,717 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:26,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product29.cil.c [2019-10-13 21:18:26,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281c538a7/9a5c520f559c4650bfb689b27eb359c2/FLAGb223e57c5 [2019-10-13 21:18:27,505 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:27,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product29.cil.c [2019-10-13 21:18:27,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281c538a7/9a5c520f559c4650bfb689b27eb359c2/FLAGb223e57c5 [2019-10-13 21:18:27,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281c538a7/9a5c520f559c4650bfb689b27eb359c2 [2019-10-13 21:18:27,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:27,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:27,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:27,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:27,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:27,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21180631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27, skipping insertion in model container [2019-10-13 21:18:27,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,686 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:27,791 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:28,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:28,676 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:28,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:28,933 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:28,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28 WrapperNode [2019-10-13 21:18:28,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:28,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:28,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:28,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:28,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:28,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:28,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:28,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:29,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:29,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:29,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... [2019-10-13 21:18:29,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:29,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:29,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:29,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:29,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:18:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:18:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:18:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:18:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:18:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:18:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:18:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:18:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:31,476 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:31,476 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:31,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:31 BoogieIcfgContainer [2019-10-13 21:18:31,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:31,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:31,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:31,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:31,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:27" (1/3) ... [2019-10-13 21:18:31,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442b403b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:31, skipping insertion in model container [2019-10-13 21:18:31,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:28" (2/3) ... [2019-10-13 21:18:31,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442b403b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:31, skipping insertion in model container [2019-10-13 21:18:31,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:31" (3/3) ... [2019-10-13 21:18:31,488 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product29.cil.c [2019-10-13 21:18:31,499 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:31,510 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:31,523 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:31,566 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:31,567 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:31,570 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:31,571 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:31,571 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:31,571 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:31,572 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:31,572 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states. [2019-10-13 21:18:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:18:31,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,654 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:31,656 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1953554192, now seen corresponding path program 1 times [2019-10-13 21:18:31,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736374653] [2019-10-13 21:18:31,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:32,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736374653] [2019-10-13 21:18:32,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:32,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786111216] [2019-10-13 21:18:32,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:32,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:32,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:32,383 INFO L87 Difference]: Start difference. First operand 606 states. Second operand 2 states. [2019-10-13 21:18:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,481 INFO L93 Difference]: Finished difference Result 853 states and 1161 transitions. [2019-10-13 21:18:32,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:32,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-13 21:18:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,529 INFO L225 Difference]: With dead ends: 853 [2019-10-13 21:18:32,529 INFO L226 Difference]: Without dead ends: 549 [2019-10-13 21:18:32,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-10-13 21:18:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2019-10-13 21:18:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-13 21:18:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 752 transitions. [2019-10-13 21:18:32,658 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 752 transitions. Word has length 167 [2019-10-13 21:18:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,661 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 752 transitions. [2019-10-13 21:18:32,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 752 transitions. [2019-10-13 21:18:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:18:32,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,669 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:32,669 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash -534792275, now seen corresponding path program 1 times [2019-10-13 21:18:32,670 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790912909] [2019-10-13 21:18:32,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:32,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790912909] [2019-10-13 21:18:32,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:32,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750346956] [2019-10-13 21:18:32,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:32,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:32,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,858 INFO L87 Difference]: Start difference. First operand 549 states and 752 transitions. Second operand 3 states. [2019-10-13 21:18:32,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,947 INFO L93 Difference]: Finished difference Result 836 states and 1126 transitions. [2019-10-13 21:18:32,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:18:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,954 INFO L225 Difference]: With dead ends: 836 [2019-10-13 21:18:32,954 INFO L226 Difference]: Without dead ends: 552 [2019-10-13 21:18:32,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-10-13 21:18:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 551. [2019-10-13 21:18:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2019-10-13 21:18:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 754 transitions. [2019-10-13 21:18:33,004 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 754 transitions. Word has length 168 [2019-10-13 21:18:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:33,005 INFO L462 AbstractCegarLoop]: Abstraction has 551 states and 754 transitions. [2019-10-13 21:18:33,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 754 transitions. [2019-10-13 21:18:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:18:33,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,012 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:33,012 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,013 INFO L82 PathProgramCache]: Analyzing trace with hash 771901529, now seen corresponding path program 1 times [2019-10-13 21:18:33,013 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129635030] [2019-10-13 21:18:33,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:33,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129635030] [2019-10-13 21:18:33,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:33,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:33,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919641882] [2019-10-13 21:18:33,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:33,215 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:33,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:33,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:33,215 INFO L87 Difference]: Start difference. First operand 551 states and 754 transitions. Second operand 3 states. [2019-10-13 21:18:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:33,277 INFO L93 Difference]: Finished difference Result 1078 states and 1506 transitions. [2019-10-13 21:18:33,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:33,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 21:18:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:33,285 INFO L225 Difference]: With dead ends: 1078 [2019-10-13 21:18:33,286 INFO L226 Difference]: Without dead ends: 592 [2019-10-13 21:18:33,288 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-13 21:18:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 591. [2019-10-13 21:18:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-10-13 21:18:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 823 transitions. [2019-10-13 21:18:33,335 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 823 transitions. Word has length 174 [2019-10-13 21:18:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:33,337 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 823 transitions. [2019-10-13 21:18:33,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 823 transitions. [2019-10-13 21:18:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:18:33,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,345 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:33,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1507669638, now seen corresponding path program 1 times [2019-10-13 21:18:33,348 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994811126] [2019-10-13 21:18:33,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:33,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994811126] [2019-10-13 21:18:33,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:33,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:33,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060456184] [2019-10-13 21:18:33,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:33,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:33,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:33,573 INFO L87 Difference]: Start difference. First operand 591 states and 823 transitions. Second operand 3 states. [2019-10-13 21:18:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:33,626 INFO L93 Difference]: Finished difference Result 1003 states and 1385 transitions. [2019-10-13 21:18:33,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:33,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:18:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:33,635 INFO L225 Difference]: With dead ends: 1003 [2019-10-13 21:18:33,635 INFO L226 Difference]: Without dead ends: 732 [2019-10-13 21:18:33,637 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-13 21:18:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 731. [2019-10-13 21:18:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-10-13 21:18:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1020 transitions. [2019-10-13 21:18:33,753 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1020 transitions. Word has length 175 [2019-10-13 21:18:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:33,754 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 1020 transitions. [2019-10-13 21:18:33,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1020 transitions. [2019-10-13 21:18:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-13 21:18:33,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,762 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:33,762 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1923746336, now seen corresponding path program 1 times [2019-10-13 21:18:33,763 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819966945] [2019-10-13 21:18:33,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:18:34,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819966945] [2019-10-13 21:18:34,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:34,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:34,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696434478] [2019-10-13 21:18:34,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:34,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:34,156 INFO L87 Difference]: Start difference. First operand 731 states and 1020 transitions. Second operand 6 states. [2019-10-13 21:18:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:35,048 INFO L93 Difference]: Finished difference Result 1786 states and 2489 transitions. [2019-10-13 21:18:35,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:35,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 309 [2019-10-13 21:18:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:35,059 INFO L225 Difference]: With dead ends: 1786 [2019-10-13 21:18:35,059 INFO L226 Difference]: Without dead ends: 1413 [2019-10-13 21:18:35,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2019-10-13 21:18:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1402. [2019-10-13 21:18:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2019-10-13 21:18:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1976 transitions. [2019-10-13 21:18:35,138 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1976 transitions. Word has length 309 [2019-10-13 21:18:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:35,141 INFO L462 AbstractCegarLoop]: Abstraction has 1402 states and 1976 transitions. [2019-10-13 21:18:35,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1976 transitions. [2019-10-13 21:18:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-10-13 21:18:35,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,150 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,151 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash -72185863, now seen corresponding path program 1 times [2019-10-13 21:18:35,151 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156136709] [2019-10-13 21:18:35,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:18:35,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156136709] [2019-10-13 21:18:35,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:35,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:18:35,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533611291] [2019-10-13 21:18:35,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:35,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:18:35,555 INFO L87 Difference]: Start difference. First operand 1402 states and 1976 transitions. Second operand 11 states. [2019-10-13 21:18:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:36,038 INFO L93 Difference]: Finished difference Result 2145 states and 2965 transitions. [2019-10-13 21:18:36,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:18:36,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 310 [2019-10-13 21:18:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:36,048 INFO L225 Difference]: With dead ends: 2145 [2019-10-13 21:18:36,048 INFO L226 Difference]: Without dead ends: 1376 [2019-10-13 21:18:36,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:18:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-10-13 21:18:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1372. [2019-10-13 21:18:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-10-13 21:18:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1925 transitions. [2019-10-13 21:18:36,121 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1925 transitions. Word has length 310 [2019-10-13 21:18:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:36,121 INFO L462 AbstractCegarLoop]: Abstraction has 1372 states and 1925 transitions. [2019-10-13 21:18:36,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1925 transitions. [2019-10-13 21:18:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2019-10-13 21:18:36,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:36,133 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:36,133 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:36,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:36,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1394524261, now seen corresponding path program 1 times [2019-10-13 21:18:36,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:36,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308477360] [2019-10-13 21:18:36,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:36,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308477360] [2019-10-13 21:18:36,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696832514] [2019-10-13 21:18:36,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:37,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:18:37,927 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:38,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:38,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:38,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:39,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:39,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21, 9] total 34 [2019-10-13 21:18:39,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934865420] [2019-10-13 21:18:39,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:39,153 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:39,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:39,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:18:39,154 INFO L87 Difference]: Start difference. First operand 1372 states and 1925 transitions. Second operand 9 states. [2019-10-13 21:18:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:41,361 INFO L93 Difference]: Finished difference Result 2722 states and 3830 transitions. [2019-10-13 21:18:41,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:41,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2019-10-13 21:18:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:41,375 INFO L225 Difference]: With dead ends: 2722 [2019-10-13 21:18:41,375 INFO L226 Difference]: Without dead ends: 1386 [2019-10-13 21:18:41,381 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 623 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:18:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2019-10-13 21:18:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1386. [2019-10-13 21:18:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2019-10-13 21:18:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1943 transitions. [2019-10-13 21:18:41,455 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1943 transitions. Word has length 318 [2019-10-13 21:18:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:41,456 INFO L462 AbstractCegarLoop]: Abstraction has 1386 states and 1943 transitions. [2019-10-13 21:18:41,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1943 transitions. [2019-10-13 21:18:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-10-13 21:18:41,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:41,467 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:41,675 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:41,676 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash -778047374, now seen corresponding path program 1 times [2019-10-13 21:18:41,677 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:41,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032860177] [2019-10-13 21:18:41,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:42,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032860177] [2019-10-13 21:18:42,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774640516] [2019-10-13 21:18:42,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:43,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 3513 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:43,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:18:43,684 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:44,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:44,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:44,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:44,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21, 7] total 30 [2019-10-13 21:18:44,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054780622] [2019-10-13 21:18:44,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:44,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:18:44,575 INFO L87 Difference]: Start difference. First operand 1386 states and 1943 transitions. Second operand 7 states. [2019-10-13 21:18:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:45,959 INFO L93 Difference]: Finished difference Result 2725 states and 3839 transitions. [2019-10-13 21:18:45,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:45,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2019-10-13 21:18:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:45,971 INFO L225 Difference]: With dead ends: 2725 [2019-10-13 21:18:45,971 INFO L226 Difference]: Without dead ends: 1390 [2019-10-13 21:18:45,977 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 630 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2019-10-13 21:18:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2019-10-13 21:18:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2019-10-13 21:18:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1948 transitions. [2019-10-13 21:18:46,063 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1948 transitions. Word has length 319 [2019-10-13 21:18:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:46,064 INFO L462 AbstractCegarLoop]: Abstraction has 1390 states and 1948 transitions. [2019-10-13 21:18:46,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1948 transitions. [2019-10-13 21:18:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-13 21:18:46,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:46,072 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:46,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:46,283 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:46,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash 943867666, now seen corresponding path program 1 times [2019-10-13 21:18:46,284 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:46,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077051259] [2019-10-13 21:18:46,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:46,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:18:47,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077051259] [2019-10-13 21:18:47,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672259602] [2019-10-13 21:18:47,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:47,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:47,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:18:48,109 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:48,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:48,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:48,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:18:49,164 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:49,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 35 [2019-10-13 21:18:49,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354402647] [2019-10-13 21:18:49,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:49,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:49,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:49,167 INFO L87 Difference]: Start difference. First operand 1390 states and 1948 transitions. Second operand 16 states. [2019-10-13 21:18:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,797 INFO L93 Difference]: Finished difference Result 2731 states and 3838 transitions. [2019-10-13 21:18:50,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:50,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 320 [2019-10-13 21:18:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,809 INFO L225 Difference]: With dead ends: 2731 [2019-10-13 21:18:50,809 INFO L226 Difference]: Without dead ends: 1402 [2019-10-13 21:18:50,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 627 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:18:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-10-13 21:18:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1400. [2019-10-13 21:18:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-13 21:18:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1959 transitions. [2019-10-13 21:18:50,903 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1959 transitions. Word has length 320 [2019-10-13 21:18:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,904 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 1959 transitions. [2019-10-13 21:18:50,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:50,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1959 transitions. [2019-10-13 21:18:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-13 21:18:50,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,914 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:51,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:51,124 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:51,125 INFO L82 PathProgramCache]: Analyzing trace with hash 211714559, now seen corresponding path program 2 times [2019-10-13 21:18:51,125 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:51,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005263823] [2019-10-13 21:18:51,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:51,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:51,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-13 21:18:52,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005263823] [2019-10-13 21:18:52,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77459978] [2019-10-13 21:18:52,164 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:52,886 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:52,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:52,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:52,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:18:53,151 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:53,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:18:53,954 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:53,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 31 [2019-10-13 21:18:53,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059159495] [2019-10-13 21:18:53,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:53,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:53,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:53,957 INFO L87 Difference]: Start difference. First operand 1400 states and 1959 transitions. Second operand 12 states. [2019-10-13 21:18:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:55,598 INFO L93 Difference]: Finished difference Result 2722 states and 3826 transitions. [2019-10-13 21:18:55,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:55,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2019-10-13 21:18:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:55,607 INFO L225 Difference]: With dead ends: 2722 [2019-10-13 21:18:55,607 INFO L226 Difference]: Without dead ends: 1402 [2019-10-13 21:18:55,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:18:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2019-10-13 21:18:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1400. [2019-10-13 21:18:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-13 21:18:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1958 transitions. [2019-10-13 21:18:55,672 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1958 transitions. Word has length 321 [2019-10-13 21:18:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:55,673 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 1958 transitions. [2019-10-13 21:18:55,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1958 transitions. [2019-10-13 21:18:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-10-13 21:18:55,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:55,680 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:55,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:55,892 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:55,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1898180047, now seen corresponding path program 3 times [2019-10-13 21:18:55,893 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:55,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816819937] [2019-10-13 21:18:55,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 21:18:56,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816819937] [2019-10-13 21:18:56,339 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866640406] [2019-10-13 21:18:56,339 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:57,152 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:57,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:57,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:57,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:18:57,410 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:58,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:58,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:58,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:18:58,397 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:58,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 34 [2019-10-13 21:18:58,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073365601] [2019-10-13 21:18:58,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:58,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:58,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:58,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:18:58,400 INFO L87 Difference]: Start difference. First operand 1400 states and 1958 transitions. Second operand 15 states.