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_spec9_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:18:09,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:18:09,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:18:09,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:18:09,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:18:09,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:18:09,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:18:09,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:18:09,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:18:09,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:18:09,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:18:09,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:18:09,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:18:09,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:18:09,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:18:09,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:18:09,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:18:09,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:18:09,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:18:09,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:18:09,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:18:09,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:18:09,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:18:09,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:18:09,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:18:09,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:18:09,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:18:09,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:18:09,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:18:09,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:18:09,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:18:09,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:18:09,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:18:09,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:18:09,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:18:09,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:18:09,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:18:09,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:18:09,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:18:09,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:18:09,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:18:09,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:18:09,420 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:18:09,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:18:09,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:18:09,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:18:09,422 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:18:09,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:18:09,423 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:18:09,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:18:09,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:18:09,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:18:09,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:18:09,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:18:09,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:18:09,425 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:18:09,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:18:09,426 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:18:09,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:18:09,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:18:09,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:18:09,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:18:09,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:18:09,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:09,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:18:09,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:18:09,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:18:09,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:18:09,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:18:09,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:18:09,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:18:09,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:18:09,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:18:09,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:18:09,738 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:18:09,739 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:18:09,739 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product30.cil.c [2019-10-15 01:18:09,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8a6301ef/c21d5adeb5214f1d8292c14ecd72d3a5/FLAG8332c1ae3 [2019-10-15 01:18:10,482 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:18:10,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product30.cil.c [2019-10-15 01:18:10,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8a6301ef/c21d5adeb5214f1d8292c14ecd72d3a5/FLAG8332c1ae3 [2019-10-15 01:18:10,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8a6301ef/c21d5adeb5214f1d8292c14ecd72d3a5 [2019-10-15 01:18:10,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:18:10,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:18:10,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:10,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:18:10,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:18:10,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:10" (1/1) ... [2019-10-15 01:18:10,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76217423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:10, skipping insertion in model container [2019-10-15 01:18:10,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:10" (1/1) ... [2019-10-15 01:18:10,711 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:18:10,806 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:18:11,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:11,637 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:18:11,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:11,895 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:18:11,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11 WrapperNode [2019-10-15 01:18:11,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:11,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:18:11,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:18:11,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:18:11,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:11,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:11,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:11,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:12,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:12,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:12,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... [2019-10-15 01:18:12,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:18:12,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:18:12,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:18:12,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:18:12,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:12,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:18:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:18:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:18:12,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:18:12,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:12,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:18:12,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:12,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:18:12,168 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:18:12,168 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:18:12,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:18:12,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:18:12,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:18:12,169 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:18:12,169 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:18:12,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:18:12,170 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:18:12,170 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:18:12,173 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:18:12,173 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:18:12,174 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:18:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:18:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:18:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:18:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:18:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:18:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:18:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:18:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:18:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:18:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:18:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:18:12,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:18:12,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:18:12,178 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:18:12,178 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:18:12,178 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:18:12,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:18:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:18:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:18:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:18:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:18:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:18:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:18:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:18:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:18:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:18:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:18:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:18:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:18:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:18:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:18:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:18:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:18:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:18:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:18:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:18:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:18:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:18:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:18:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:18:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:18:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:18:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:18:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:18:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:18:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:18:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:18:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:18:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:18:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:18:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:18:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:18:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:18:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:18:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:18:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:18:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:18:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:18:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:18:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:18:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:18:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:18:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:18:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:18:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:18:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:18:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:18:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:18:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:18:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:18:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:18:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:18:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:18:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:18:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:18:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:18:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:18:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:18:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:18:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:18:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:18:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:18:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:18:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:18:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:18:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:18:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:18:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:18:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:18:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:18:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:18:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:18:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:18:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:18:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:18:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:18:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:18:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:18:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:18:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:18:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:18:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:18:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:18:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:18:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:18:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:18:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:18:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:18:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:18:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:18:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:18:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:18:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:18:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:18:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:18:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:18:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:18:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:18:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:18:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:18:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:18:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:18:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:18:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:18:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:18:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:18:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:18:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:18:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:18:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:18:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:18:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:18:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:18:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:18:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:18:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:18:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:18:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:18:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:18:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:18:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:18:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:18:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:18:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:18:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:18:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:18:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:18:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:18:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:18:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:18:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:18:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:18:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:18:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:18:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:18:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:18:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:18:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:18:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:18:12,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:18:14,483 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:18:14,484 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:18:14,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:14 BoogieIcfgContainer [2019-10-15 01:18:14,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:18:14,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:18:14,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:18:14,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:18:14,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:18:10" (1/3) ... [2019-10-15 01:18:14,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35114818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:14, skipping insertion in model container [2019-10-15 01:18:14,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:11" (2/3) ... [2019-10-15 01:18:14,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35114818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:14, skipping insertion in model container [2019-10-15 01:18:14,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:14" (3/3) ... [2019-10-15 01:18:14,498 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product30.cil.c [2019-10-15 01:18:14,509 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:18:14,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:18:14,535 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:18:14,580 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:18:14,580 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:18:14,584 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:18:14,585 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:18:14,585 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:18:14,585 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:18:14,585 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:18:14,586 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:18:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states. [2019-10-15 01:18:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:18:14,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:14,677 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] [2019-10-15 01:18:14,680 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -702244773, now seen corresponding path program 1 times [2019-10-15 01:18:14,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:14,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535613496] [2019-10-15 01:18:14,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:14,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:14,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:15,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535613496] [2019-10-15 01:18:15,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:15,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:18:15,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311516732] [2019-10-15 01:18:15,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:15,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:15,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:15,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:15,502 INFO L87 Difference]: Start difference. First operand 548 states. Second operand 2 states. [2019-10-15 01:18:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:15,616 INFO L93 Difference]: Finished difference Result 782 states and 1030 transitions. [2019-10-15 01:18:15,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:15,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-15 01:18:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:15,663 INFO L225 Difference]: With dead ends: 782 [2019-10-15 01:18:15,664 INFO L226 Difference]: Without dead ends: 497 [2019-10-15 01:18:15,679 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2019-10-15 01:18:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2019-10-15 01:18:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2019-10-15 01:18:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 659 transitions. [2019-10-15 01:18:15,821 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 659 transitions. Word has length 158 [2019-10-15 01:18:15,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:15,824 INFO L462 AbstractCegarLoop]: Abstraction has 497 states and 659 transitions. [2019-10-15 01:18:15,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 659 transitions. [2019-10-15 01:18:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:18:15,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:15,837 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] [2019-10-15 01:18:15,837 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2104582375, now seen corresponding path program 1 times [2019-10-15 01:18:15,839 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:15,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606266967] [2019-10-15 01:18:15,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:15,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:15,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:16,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606266967] [2019-10-15 01:18:16,109 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:16,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:16,110 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91102699] [2019-10-15 01:18:16,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:16,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:16,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:16,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:16,114 INFO L87 Difference]: Start difference. First operand 497 states and 659 transitions. Second operand 3 states. [2019-10-15 01:18:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:16,202 INFO L93 Difference]: Finished difference Result 765 states and 998 transitions. [2019-10-15 01:18:16,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:16,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:18:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:16,209 INFO L225 Difference]: With dead ends: 765 [2019-10-15 01:18:16,210 INFO L226 Difference]: Without dead ends: 500 [2019-10-15 01:18:16,212 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-15 01:18:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2019-10-15 01:18:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-10-15 01:18:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 661 transitions. [2019-10-15 01:18:16,297 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 661 transitions. Word has length 159 [2019-10-15 01:18:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:16,299 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 661 transitions. [2019-10-15 01:18:16,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 661 transitions. [2019-10-15 01:18:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 01:18:16,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:16,305 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] [2019-10-15 01:18:16,306 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:16,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:16,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1792836169, now seen corresponding path program 1 times [2019-10-15 01:18:16,306 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:16,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596053603] [2019-10-15 01:18:16,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:16,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:16,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:16,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596053603] [2019-10-15 01:18:16,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:16,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:16,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017622863] [2019-10-15 01:18:16,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:16,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:16,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:16,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:16,635 INFO L87 Difference]: Start difference. First operand 499 states and 661 transitions. Second operand 3 states. [2019-10-15 01:18:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:16,697 INFO L93 Difference]: Finished difference Result 974 states and 1320 transitions. [2019-10-15 01:18:16,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:16,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-15 01:18:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:16,705 INFO L225 Difference]: With dead ends: 974 [2019-10-15 01:18:16,706 INFO L226 Difference]: Without dead ends: 540 [2019-10-15 01:18:16,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-10-15 01:18:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2019-10-15 01:18:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-15 01:18:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2019-10-15 01:18:16,743 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 169 [2019-10-15 01:18:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:16,744 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2019-10-15 01:18:16,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:16,745 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2019-10-15 01:18:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:18:16,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:16,754 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] [2019-10-15 01:18:16,757 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:16,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:16,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2122223245, now seen corresponding path program 1 times [2019-10-15 01:18:16,758 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:16,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237352759] [2019-10-15 01:18:16,758 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:16,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:16,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:16,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237352759] [2019-10-15 01:18:16,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:16,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:16,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426033005] [2019-10-15 01:18:16,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:16,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:16,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:16,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:16,944 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 3 states. [2019-10-15 01:18:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:16,988 INFO L93 Difference]: Finished difference Result 1091 states and 1522 transitions. [2019-10-15 01:18:16,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:16,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-15 01:18:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:16,992 INFO L225 Difference]: With dead ends: 1091 [2019-10-15 01:18:16,993 INFO L226 Difference]: Without dead ends: 617 [2019-10-15 01:18:16,995 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-15 01:18:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 616. [2019-10-15 01:18:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-15 01:18:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 862 transitions. [2019-10-15 01:18:17,022 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 862 transitions. Word has length 170 [2019-10-15 01:18:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:17,023 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 862 transitions. [2019-10-15 01:18:17,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 862 transitions. [2019-10-15 01:18:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:18:17,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:17,027 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] [2019-10-15 01:18:17,028 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:17,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1471474153, now seen corresponding path program 1 times [2019-10-15 01:18:17,028 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:17,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481056650] [2019-10-15 01:18:17,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:17,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481056650] [2019-10-15 01:18:17,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:17,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:17,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170285082] [2019-10-15 01:18:17,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:17,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:17,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:17,239 INFO L87 Difference]: Start difference. First operand 616 states and 862 transitions. Second operand 3 states. [2019-10-15 01:18:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:17,280 INFO L93 Difference]: Finished difference Result 1316 states and 1908 transitions. [2019-10-15 01:18:17,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:17,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:18:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:17,287 INFO L225 Difference]: With dead ends: 1316 [2019-10-15 01:18:17,287 INFO L226 Difference]: Without dead ends: 765 [2019-10-15 01:18:17,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-15 01:18:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 764. [2019-10-15 01:18:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-10-15 01:18:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1114 transitions. [2019-10-15 01:18:17,333 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1114 transitions. Word has length 171 [2019-10-15 01:18:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:17,333 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1114 transitions. [2019-10-15 01:18:17,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1114 transitions. [2019-10-15 01:18:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:18:17,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:17,338 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] [2019-10-15 01:18:17,338 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash -388772307, now seen corresponding path program 1 times [2019-10-15 01:18:17,339 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:17,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219457396] [2019-10-15 01:18:17,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:17,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219457396] [2019-10-15 01:18:17,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:17,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:17,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968667670] [2019-10-15 01:18:17,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:17,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:17,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:17,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:17,522 INFO L87 Difference]: Start difference. First operand 764 states and 1114 transitions. Second operand 3 states. [2019-10-15 01:18:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:17,572 INFO L93 Difference]: Finished difference Result 1748 states and 2644 transitions. [2019-10-15 01:18:17,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:17,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-10-15 01:18:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:17,581 INFO L225 Difference]: With dead ends: 1748 [2019-10-15 01:18:17,581 INFO L226 Difference]: Without dead ends: 1049 [2019-10-15 01:18:17,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-15 01:18:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1048. [2019-10-15 01:18:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-10-15 01:18:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1594 transitions. [2019-10-15 01:18:17,683 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1594 transitions. Word has length 172 [2019-10-15 01:18:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:17,684 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1594 transitions. [2019-10-15 01:18:17,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1594 transitions. [2019-10-15 01:18:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:18:17,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:17,692 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] [2019-10-15 01:18:17,693 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1194793961, now seen corresponding path program 1 times [2019-10-15 01:18:17,694 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:17,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478255371] [2019-10-15 01:18:17,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:18:17,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478255371] [2019-10-15 01:18:17,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:17,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:17,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830684181] [2019-10-15 01:18:17,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:17,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:17,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:17,858 INFO L87 Difference]: Start difference. First operand 1048 states and 1594 transitions. Second operand 3 states. [2019-10-15 01:18:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:17,901 INFO L93 Difference]: Finished difference Result 1404 states and 2062 transitions. [2019-10-15 01:18:17,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:17,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-15 01:18:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:17,909 INFO L225 Difference]: With dead ends: 1404 [2019-10-15 01:18:17,909 INFO L226 Difference]: Without dead ends: 1141 [2019-10-15 01:18:17,910 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-10-15 01:18:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2019-10-15 01:18:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2019-10-15 01:18:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1717 transitions. [2019-10-15 01:18:17,982 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1717 transitions. Word has length 175 [2019-10-15 01:18:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:17,983 INFO L462 AbstractCegarLoop]: Abstraction has 1141 states and 1717 transitions. [2019-10-15 01:18:17,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1717 transitions. [2019-10-15 01:18:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2019-10-15 01:18:17,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:17,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:17,998 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:17,998 INFO L82 PathProgramCache]: Analyzing trace with hash 895322575, now seen corresponding path program 1 times [2019-10-15 01:18:17,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:17,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735889691] [2019-10-15 01:18:17,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:18:18,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735889691] [2019-10-15 01:18:18,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094688676] [2019-10-15 01:18:18,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:19,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:19,867 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:20,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:20,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:20,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:18:21,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:21,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:18:21,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880603110] [2019-10-15 01:18:21,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:21,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:21,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:21,063 INFO L87 Difference]: Start difference. First operand 1141 states and 1717 transitions. Second operand 9 states. [2019-10-15 01:18:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:23,211 INFO L93 Difference]: Finished difference Result 2260 states and 3414 transitions. [2019-10-15 01:18:23,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:23,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2019-10-15 01:18:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:23,218 INFO L225 Difference]: With dead ends: 2260 [2019-10-15 01:18:23,219 INFO L226 Difference]: Without dead ends: 1155 [2019-10-15 01:18:23,223 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 625 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:18:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-10-15 01:18:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2019-10-15 01:18:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2019-10-15 01:18:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1735 transitions. [2019-10-15 01:18:23,277 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1735 transitions. Word has length 318 [2019-10-15 01:18:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:23,278 INFO L462 AbstractCegarLoop]: Abstraction has 1155 states and 1735 transitions. [2019-10-15 01:18:23,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1735 transitions. [2019-10-15 01:18:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-10-15 01:18:23,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:23,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:23,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:23,497 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:23,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2296163, now seen corresponding path program 1 times [2019-10-15 01:18:23,498 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:23,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516945264] [2019-10-15 01:18:23,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:23,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:23,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:18:24,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516945264] [2019-10-15 01:18:24,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210596231] [2019-10-15 01:18:24,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:24,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:24,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:25,068 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:25,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:25,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:18:25,818 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:25,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:18:25,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977449276] [2019-10-15 01:18:25,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:18:25,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:25,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:18:25,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:25,825 INFO L87 Difference]: Start difference. First operand 1155 states and 1735 transitions. Second operand 7 states. [2019-10-15 01:18:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:26,836 INFO L93 Difference]: Finished difference Result 2261 states and 3424 transitions. [2019-10-15 01:18:26,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:18:26,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2019-10-15 01:18:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:26,845 INFO L225 Difference]: With dead ends: 2261 [2019-10-15 01:18:26,845 INFO L226 Difference]: Without dead ends: 1157 [2019-10-15 01:18:26,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 632 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:18:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-10-15 01:18:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2019-10-15 01:18:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2019-10-15 01:18:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1738 transitions. [2019-10-15 01:18:26,921 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1738 transitions. Word has length 319 [2019-10-15 01:18:26,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:26,922 INFO L462 AbstractCegarLoop]: Abstraction has 1157 states and 1738 transitions. [2019-10-15 01:18:26,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:18:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1738 transitions. [2019-10-15 01:18:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-15 01:18:26,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:26,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:27,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:27,143 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:27,144 INFO L82 PathProgramCache]: Analyzing trace with hash 494009298, now seen corresponding path program 1 times [2019-10-15 01:18:27,145 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:27,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630849046] [2019-10-15 01:18:27,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:27,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:27,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:18:27,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630849046] [2019-10-15 01:18:27,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104102132] [2019-10-15 01:18:27,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:28,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:28,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:28,773 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:29,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:29,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:18:29,694 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:29,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:18:29,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069767543] [2019-10-15 01:18:29,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:18:29,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:29,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:18:29,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:18:29,697 INFO L87 Difference]: Start difference. First operand 1157 states and 1738 transitions. Second operand 16 states. [2019-10-15 01:18:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:31,501 INFO L93 Difference]: Finished difference Result 2265 states and 3418 transitions. [2019-10-15 01:18:31,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:31,502 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 320 [2019-10-15 01:18:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:31,510 INFO L225 Difference]: With dead ends: 2265 [2019-10-15 01:18:31,510 INFO L226 Difference]: Without dead ends: 1169 [2019-10-15 01:18:31,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 629 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:18:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-15 01:18:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2019-10-15 01:18:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-15 01:18:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1749 transitions. [2019-10-15 01:18:31,569 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1749 transitions. Word has length 320 [2019-10-15 01:18:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:31,569 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1749 transitions. [2019-10-15 01:18:31,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:31,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1749 transitions. [2019-10-15 01:18:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-15 01:18:31,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:31,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:31,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:31,790 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1193942196, now seen corresponding path program 2 times [2019-10-15 01:18:31,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:31,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370664610] [2019-10-15 01:18:31,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:31,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:31,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 01:18:32,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370664610] [2019-10-15 01:18:32,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309464536] [2019-10-15 01:18:32,334 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 [2019-10-15 01:18:33,197 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:33,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:33,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:33,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:33,514 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:34,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:34,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:34,277 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:34,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:34,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024881404] [2019-10-15 01:18:34,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:34,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:34,279 INFO L87 Difference]: Start difference. First operand 1167 states and 1749 transitions. Second operand 12 states. [2019-10-15 01:18:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:35,929 INFO L93 Difference]: Finished difference Result 2256 states and 3406 transitions. [2019-10-15 01:18:35,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:35,930 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2019-10-15 01:18:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:35,937 INFO L225 Difference]: With dead ends: 2256 [2019-10-15 01:18:35,937 INFO L226 Difference]: Without dead ends: 1169 [2019-10-15 01:18:35,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 636 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-15 01:18:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2019-10-15 01:18:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-15 01:18:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1748 transitions. [2019-10-15 01:18:36,053 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1748 transitions. Word has length 321 [2019-10-15 01:18:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:36,054 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1748 transitions. [2019-10-15 01:18:36,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1748 transitions. [2019-10-15 01:18:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-10-15 01:18:36,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:36,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:36,275 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:36,276 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1690710337, now seen corresponding path program 3 times [2019-10-15 01:18:36,277 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:36,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29276209] [2019-10-15 01:18:36,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:36,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:36,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 01:18:36,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29276209] [2019-10-15 01:18:36,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856452960] [2019-10-15 01:18:36,789 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 [2019-10-15 01:18:37,494 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:37,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:37,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:37,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:37,775 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:38,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:38,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:38,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:38,843 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:38,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:38,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156683891] [2019-10-15 01:18:38,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:38,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:38,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:38,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:38,846 INFO L87 Difference]: Start difference. First operand 1167 states and 1748 transitions. Second operand 15 states. [2019-10-15 01:18:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:40,985 INFO L93 Difference]: Finished difference Result 2263 states and 3413 transitions. [2019-10-15 01:18:40,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:40,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 322 [2019-10-15 01:18:40,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:40,999 INFO L225 Difference]: With dead ends: 2263 [2019-10-15 01:18:40,999 INFO L226 Difference]: Without dead ends: 1171 [2019-10-15 01:18:41,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 633 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-10-15 01:18:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1167. [2019-10-15 01:18:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-15 01:18:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1747 transitions. [2019-10-15 01:18:41,061 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1747 transitions. Word has length 322 [2019-10-15 01:18:41,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:41,061 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1747 transitions. [2019-10-15 01:18:41,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:18:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1747 transitions. [2019-10-15 01:18:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-10-15 01:18:41,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:41,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:41,271 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:41,272 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:41,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:41,273 INFO L82 PathProgramCache]: Analyzing trace with hash 481673088, now seen corresponding path program 1 times [2019-10-15 01:18:41,273 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:41,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108948379] [2019-10-15 01:18:41,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:41,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:41,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 01:18:41,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108948379] [2019-10-15 01:18:41,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455188823] [2019-10-15 01:18:41,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:42,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:42,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:42,810 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:43,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:43,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:43,817 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:43,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-15 01:18:43,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878562873] [2019-10-15 01:18:43,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:18:43,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:43,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:18:43,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:43,824 INFO L87 Difference]: Start difference. First operand 1167 states and 1747 transitions. Second operand 11 states. [2019-10-15 01:18:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:45,129 INFO L93 Difference]: Finished difference Result 2260 states and 3410 transitions. [2019-10-15 01:18:45,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:45,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 323 [2019-10-15 01:18:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:45,138 INFO L225 Difference]: With dead ends: 2260 [2019-10-15 01:18:45,138 INFO L226 Difference]: Without dead ends: 1173 [2019-10-15 01:18:45,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 640 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:18:45,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states.