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_spec27_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:43,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:43,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:43,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:43,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:43,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:43,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:43,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:43,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:43,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:43,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:43,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:43,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:43,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:43,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:43,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:43,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:43,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:43,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:43,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:43,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:43,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:43,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:43,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:43,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:43,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:43,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:43,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:43,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:43,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:43,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:43,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:43,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:43,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:43,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:43,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:43,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:43,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:43,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:43,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:43,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:43,788 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 01:13:43,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:43,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:43,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:43,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:43,804 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:43,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:43,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:43,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:43,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:43,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:43,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:43,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:43,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:43,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:43,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:43,806 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:43,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:43,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:43,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:43,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:43,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:43,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:43,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:43,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:43,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:43,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:43,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:43,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:43,809 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 01:13:44,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:44,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:44,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:44,115 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:44,115 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:44,116 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-10-15 01:13:44,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb566136/740e627335d84e6d8763ab414a40aa34/FLAGbe338edbb [2019-10-15 01:13:44,855 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:44,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-10-15 01:13:44,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb566136/740e627335d84e6d8763ab414a40aa34/FLAGbe338edbb [2019-10-15 01:13:45,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb566136/740e627335d84e6d8763ab414a40aa34 [2019-10-15 01:13:45,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:45,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:45,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:45,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:45,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:45,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:45" (1/1) ... [2019-10-15 01:13:45,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b29eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:45, skipping insertion in model container [2019-10-15 01:13:45,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:45" (1/1) ... [2019-10-15 01:13:45,157 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:45,246 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:45,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:45,919 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:46,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:46,212 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:46,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46 WrapperNode [2019-10-15 01:13:46,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:46,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:46,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:46,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:46,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (1/1) ... [2019-10-15 01:13:46,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:46,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:46,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:46,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:46,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (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 01:13:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:46,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:46,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:46,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:46,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:46,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:46,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:46,474 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:46,474 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:46,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:46,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:46,475 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:46,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:46,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:46,476 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:46,476 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:46,476 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:46,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:46,477 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:46,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:46,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:13:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:46,481 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:13:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:13:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:13:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:13:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:13:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:46,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:46,497 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:46,498 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:46,499 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:46,499 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:46,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:46,499 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:46,499 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:46,499 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:46,501 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:46,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:46,503 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:46,504 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:46,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:46,506 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:48,528 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:48,528 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:48,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:48 BoogieIcfgContainer [2019-10-15 01:13:48,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:48,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:48,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:48,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:45" (1/3) ... [2019-10-15 01:13:48,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a201f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:48, skipping insertion in model container [2019-10-15 01:13:48,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:46" (2/3) ... [2019-10-15 01:13:48,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a201f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:48, skipping insertion in model container [2019-10-15 01:13:48,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:48" (3/3) ... [2019-10-15 01:13:48,540 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2019-10-15 01:13:48,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:48,564 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:48,577 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:48,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:48,630 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:48,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:48,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:48,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:48,631 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:48,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:48,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states. [2019-10-15 01:13:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:13:48,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:48,714 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:48,721 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:48,729 INFO L82 PathProgramCache]: Analyzing trace with hash 4882894, now seen corresponding path program 1 times [2019-10-15 01:13:48,740 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:48,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262577137] [2019-10-15 01:13:48,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:49,424 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 01:13:49,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262577137] [2019-10-15 01:13:49,426 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:49,426 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:49,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241119222] [2019-10-15 01:13:49,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:49,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:49,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:49,451 INFO L87 Difference]: Start difference. First operand 484 states. Second operand 2 states. [2019-10-15 01:13:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:49,525 INFO L93 Difference]: Finished difference Result 676 states and 891 transitions. [2019-10-15 01:13:49,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:49,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-10-15 01:13:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:49,558 INFO L225 Difference]: With dead ends: 676 [2019-10-15 01:13:49,558 INFO L226 Difference]: Without dead ends: 444 [2019-10-15 01:13:49,564 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 01:13:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-15 01:13:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2019-10-15 01:13:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2019-10-15 01:13:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 588 transitions. [2019-10-15 01:13:49,652 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 588 transitions. Word has length 179 [2019-10-15 01:13:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:49,657 INFO L462 AbstractCegarLoop]: Abstraction has 444 states and 588 transitions. [2019-10-15 01:13:49,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 588 transitions. [2019-10-15 01:13:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:13:49,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:49,666 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:49,667 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:49,668 INFO L82 PathProgramCache]: Analyzing trace with hash -372709569, now seen corresponding path program 1 times [2019-10-15 01:13:49,668 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:49,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338359093] [2019-10-15 01:13:49,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:49,880 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 01:13:49,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338359093] [2019-10-15 01:13:49,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:49,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:49,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91900032] [2019-10-15 01:13:49,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:49,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:49,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:49,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:49,887 INFO L87 Difference]: Start difference. First operand 444 states and 588 transitions. Second operand 3 states. [2019-10-15 01:13:49,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:49,967 INFO L93 Difference]: Finished difference Result 659 states and 856 transitions. [2019-10-15 01:13:49,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:49,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-15 01:13:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:49,977 INFO L225 Difference]: With dead ends: 659 [2019-10-15 01:13:49,977 INFO L226 Difference]: Without dead ends: 447 [2019-10-15 01:13:49,983 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 01:13:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-15 01:13:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2019-10-15 01:13:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-10-15 01:13:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 590 transitions. [2019-10-15 01:13:50,034 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 590 transitions. Word has length 180 [2019-10-15 01:13:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:50,035 INFO L462 AbstractCegarLoop]: Abstraction has 446 states and 590 transitions. [2019-10-15 01:13:50,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 590 transitions. [2019-10-15 01:13:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:13:50,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:50,039 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:50,039 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1430696527, now seen corresponding path program 1 times [2019-10-15 01:13:50,040 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:50,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632137057] [2019-10-15 01:13:50,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:50,269 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 01:13:50,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632137057] [2019-10-15 01:13:50,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:50,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:50,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969669354] [2019-10-15 01:13:50,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:50,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:50,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:50,275 INFO L87 Difference]: Start difference. First operand 446 states and 590 transitions. Second operand 3 states. [2019-10-15 01:13:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:50,331 INFO L93 Difference]: Finished difference Result 868 states and 1178 transitions. [2019-10-15 01:13:50,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:50,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-15 01:13:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:50,341 INFO L225 Difference]: With dead ends: 868 [2019-10-15 01:13:50,341 INFO L226 Difference]: Without dead ends: 487 [2019-10-15 01:13:50,344 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 01:13:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2019-10-15 01:13:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2019-10-15 01:13:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-10-15 01:13:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 659 transitions. [2019-10-15 01:13:50,392 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 659 transitions. Word has length 190 [2019-10-15 01:13:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:50,393 INFO L462 AbstractCegarLoop]: Abstraction has 486 states and 659 transitions. [2019-10-15 01:13:50,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 659 transitions. [2019-10-15 01:13:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 01:13:50,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:50,404 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:50,404 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1249737572, now seen corresponding path program 1 times [2019-10-15 01:13:50,405 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:50,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246777566] [2019-10-15 01:13:50,405 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:50,677 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 01:13:50,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246777566] [2019-10-15 01:13:50,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:50,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:50,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402242735] [2019-10-15 01:13:50,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:50,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:50,685 INFO L87 Difference]: Start difference. First operand 486 states and 659 transitions. Second operand 3 states. [2019-10-15 01:13:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:50,727 INFO L93 Difference]: Finished difference Result 985 states and 1380 transitions. [2019-10-15 01:13:50,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:50,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-15 01:13:50,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:50,736 INFO L225 Difference]: With dead ends: 985 [2019-10-15 01:13:50,736 INFO L226 Difference]: Without dead ends: 564 [2019-10-15 01:13:50,738 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 01:13:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-15 01:13:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 563. [2019-10-15 01:13:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2019-10-15 01:13:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 791 transitions. [2019-10-15 01:13:50,775 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 791 transitions. Word has length 191 [2019-10-15 01:13:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:50,776 INFO L462 AbstractCegarLoop]: Abstraction has 563 states and 791 transitions. [2019-10-15 01:13:50,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 791 transitions. [2019-10-15 01:13:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 01:13:50,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:50,781 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:50,782 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash -774880689, now seen corresponding path program 1 times [2019-10-15 01:13:50,783 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:50,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893460023] [2019-10-15 01:13:50,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:50,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,030 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 01:13:51,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893460023] [2019-10-15 01:13:51,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:51,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099896487] [2019-10-15 01:13:51,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:51,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:51,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:51,033 INFO L87 Difference]: Start difference. First operand 563 states and 791 transitions. Second operand 3 states. [2019-10-15 01:13:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:51,074 INFO L93 Difference]: Finished difference Result 1210 states and 1766 transitions. [2019-10-15 01:13:51,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:51,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-10-15 01:13:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:51,080 INFO L225 Difference]: With dead ends: 1210 [2019-10-15 01:13:51,080 INFO L226 Difference]: Without dead ends: 712 [2019-10-15 01:13:51,083 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 01:13:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-10-15 01:13:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 711. [2019-10-15 01:13:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-10-15 01:13:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1043 transitions. [2019-10-15 01:13:51,117 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1043 transitions. Word has length 192 [2019-10-15 01:13:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:51,118 INFO L462 AbstractCegarLoop]: Abstraction has 711 states and 1043 transitions. [2019-10-15 01:13:51,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1043 transitions. [2019-10-15 01:13:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 01:13:51,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,123 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,124 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash 569944220, now seen corresponding path program 1 times [2019-10-15 01:13:51,124 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322679542] [2019-10-15 01:13:51,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,280 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 01:13:51,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322679542] [2019-10-15 01:13:51,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:51,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363743939] [2019-10-15 01:13:51,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:51,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:51,283 INFO L87 Difference]: Start difference. First operand 711 states and 1043 transitions. Second operand 3 states. [2019-10-15 01:13:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:51,369 INFO L93 Difference]: Finished difference Result 1642 states and 2502 transitions. [2019-10-15 01:13:51,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:51,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-15 01:13:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:51,378 INFO L225 Difference]: With dead ends: 1642 [2019-10-15 01:13:51,379 INFO L226 Difference]: Without dead ends: 996 [2019-10-15 01:13:51,381 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 01:13:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-15 01:13:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 995. [2019-10-15 01:13:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-10-15 01:13:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1523 transitions. [2019-10-15 01:13:51,427 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1523 transitions. Word has length 193 [2019-10-15 01:13:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:51,428 INFO L462 AbstractCegarLoop]: Abstraction has 995 states and 1523 transitions. [2019-10-15 01:13:51,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1523 transitions. [2019-10-15 01:13:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:13:51,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,435 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,435 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2027889146, now seen corresponding path program 1 times [2019-10-15 01:13:51,436 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215906213] [2019-10-15 01:13:51,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:51,683 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 01:13:51,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215906213] [2019-10-15 01:13:51,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:51,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:51,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086383470] [2019-10-15 01:13:51,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:51,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:51,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:51,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:51,691 INFO L87 Difference]: Start difference. First operand 995 states and 1523 transitions. Second operand 8 states. [2019-10-15 01:13:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:51,784 INFO L93 Difference]: Finished difference Result 1194 states and 1776 transitions. [2019-10-15 01:13:51,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:51,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-10-15 01:13:51,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:51,793 INFO L225 Difference]: With dead ends: 1194 [2019-10-15 01:13:51,794 INFO L226 Difference]: Without dead ends: 995 [2019-10-15 01:13:51,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-10-15 01:13:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2019-10-15 01:13:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-10-15 01:13:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1522 transitions. [2019-10-15 01:13:51,857 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1522 transitions. Word has length 196 [2019-10-15 01:13:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:51,858 INFO L462 AbstractCegarLoop]: Abstraction has 995 states and 1522 transitions. [2019-10-15 01:13:51,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1522 transitions. [2019-10-15 01:13:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:13:51,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,867 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,868 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1861004252, now seen corresponding path program 1 times [2019-10-15 01:13:51,869 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822824764] [2019-10-15 01:13:51,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:52,222 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 01:13:52,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822824764] [2019-10-15 01:13:52,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:52,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:13:52,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609049788] [2019-10-15 01:13:52,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:52,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:52,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:52,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:52,224 INFO L87 Difference]: Start difference. First operand 995 states and 1522 transitions. Second operand 7 states. [2019-10-15 01:13:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:54,391 INFO L93 Difference]: Finished difference Result 1416 states and 2054 transitions. [2019-10-15 01:13:54,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:13:54,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-10-15 01:13:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:54,399 INFO L225 Difference]: With dead ends: 1416 [2019-10-15 01:13:54,399 INFO L226 Difference]: Without dead ends: 1209 [2019-10-15 01:13:54,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:13:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2019-10-15 01:13:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1200. [2019-10-15 01:13:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-15 01:13:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1779 transitions. [2019-10-15 01:13:54,465 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1779 transitions. Word has length 203 [2019-10-15 01:13:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:54,466 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1779 transitions. [2019-10-15 01:13:54,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:13:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1779 transitions. [2019-10-15 01:13:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:13:54,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:54,473 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:54,473 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:54,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:54,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1188466073, now seen corresponding path program 1 times [2019-10-15 01:13:54,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:54,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638044350] [2019-10-15 01:13:54,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:54,947 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 01:13:54,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638044350] [2019-10-15 01:13:54,948 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:54,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-15 01:13:54,948 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494457466] [2019-10-15 01:13:54,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-15 01:13:54,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-15 01:13:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:13:54,950 INFO L87 Difference]: Start difference. First operand 1200 states and 1779 transitions. Second operand 24 states. [2019-10-15 01:13:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:55,591 INFO L93 Difference]: Finished difference Result 1692 states and 2405 transitions. [2019-10-15 01:13:55,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-15 01:13:55,594 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 204 [2019-10-15 01:13:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:55,605 INFO L225 Difference]: With dead ends: 1692 [2019-10-15 01:13:55,605 INFO L226 Difference]: Without dead ends: 1242 [2019-10-15 01:13:55,609 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:13:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2019-10-15 01:13:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1238. [2019-10-15 01:13:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2019-10-15 01:13:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1823 transitions. [2019-10-15 01:13:55,675 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1823 transitions. Word has length 204 [2019-10-15 01:13:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:55,676 INFO L462 AbstractCegarLoop]: Abstraction has 1238 states and 1823 transitions. [2019-10-15 01:13:55,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-15 01:13:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1823 transitions. [2019-10-15 01:13:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 01:13:55,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:55,688 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 01:13:55,689 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1681156270, now seen corresponding path program 1 times [2019-10-15 01:13:55,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:55,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085333016] [2019-10-15 01:13:55,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:13:55,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085333016] [2019-10-15 01:13:55,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:55,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:55,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880141820] [2019-10-15 01:13:55,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:55,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:55,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:55,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:55,949 INFO L87 Difference]: Start difference. First operand 1238 states and 1823 transitions. Second operand 8 states. [2019-10-15 01:14:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,027 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2019-10-15 01:14:00,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:00,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2019-10-15 01:14:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,049 INFO L225 Difference]: With dead ends: 2604 [2019-10-15 01:14:00,049 INFO L226 Difference]: Without dead ends: 2176 [2019-10-15 01:14:00,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-10-15 01:14:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2162. [2019-10-15 01:14:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2162 states. [2019-10-15 01:14:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2999 transitions. [2019-10-15 01:14:00,181 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2999 transitions. Word has length 235 [2019-10-15 01:14:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:00,183 INFO L462 AbstractCegarLoop]: Abstraction has 2162 states and 2999 transitions. [2019-10-15 01:14:00,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:14:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2999 transitions. [2019-10-15 01:14:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:00,193 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:00,194 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1] [2019-10-15 01:14:00,194 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:00,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1634971345, now seen corresponding path program 1 times [2019-10-15 01:14:00,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:00,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045315108] [2019-10-15 01:14:00,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:00,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045315108] [2019-10-15 01:14:00,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:14:00,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583227661] [2019-10-15 01:14:00,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:14:00,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:14:00,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:00,539 INFO L87 Difference]: Start difference. First operand 2162 states and 2999 transitions. Second operand 18 states. [2019-10-15 01:14:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,975 INFO L93 Difference]: Finished difference Result 2816 states and 3830 transitions. [2019-10-15 01:14:00,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:14:00,976 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 236 [2019-10-15 01:14:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,990 INFO L225 Difference]: With dead ends: 2816 [2019-10-15 01:14:00,991 INFO L226 Difference]: Without dead ends: 1797 [2019-10-15 01:14:00,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-10-15 01:14:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1791. [2019-10-15 01:14:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-10-15 01:14:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2541 transitions. [2019-10-15 01:14:01,086 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2541 transitions. Word has length 236 [2019-10-15 01:14:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:01,087 INFO L462 AbstractCegarLoop]: Abstraction has 1791 states and 2541 transitions. [2019-10-15 01:14:01,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:14:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2541 transitions. [2019-10-15 01:14:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:14:01,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:01,097 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:01,098 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash 210736296, now seen corresponding path program 1 times [2019-10-15 01:14:01,098 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:01,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796406690] [2019-10-15 01:14:01,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:01,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796406690] [2019-10-15 01:14:01,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699509868] [2019-10-15 01:14:01,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:01,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:02,131 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:02,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:02,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:02,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:02,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:02,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:14:02,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577866369] [2019-10-15 01:14:02,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:02,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:02,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:02,937 INFO L87 Difference]: Start difference. First operand 1791 states and 2541 transitions. Second operand 9 states. [2019-10-15 01:14:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:04,148 INFO L93 Difference]: Finished difference Result 3560 states and 5062 transitions. [2019-10-15 01:14:04,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:04,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2019-10-15 01:14:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:04,159 INFO L225 Difference]: With dead ends: 3560 [2019-10-15 01:14:04,159 INFO L226 Difference]: Without dead ends: 1805 [2019-10-15 01:14:04,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 476 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2019-10-15 01:14:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2019-10-15 01:14:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2019-10-15 01:14:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2559 transitions. [2019-10-15 01:14:04,255 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2559 transitions. Word has length 245 [2019-10-15 01:14:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:04,256 INFO L462 AbstractCegarLoop]: Abstraction has 1805 states and 2559 transitions. [2019-10-15 01:14:04,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2559 transitions. [2019-10-15 01:14:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 01:14:04,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:04,265 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:04,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:04,483 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1010897091, now seen corresponding path program 1 times [2019-10-15 01:14:04,483 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:04,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266866431] [2019-10-15 01:14:04,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:04,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266866431] [2019-10-15 01:14:04,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37387050] [2019-10-15 01:14:04,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:05,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:05,681 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:05,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:06,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:06,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:06,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:06,101 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374801208] [2019-10-15 01:14:06,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:06,102 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:06,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:06,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:06,103 INFO L87 Difference]: Start difference. First operand 1805 states and 2559 transitions. Second operand 7 states. [2019-10-15 01:14:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:07,217 INFO L93 Difference]: Finished difference Result 3561 states and 5072 transitions. [2019-10-15 01:14:07,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:07,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2019-10-15 01:14:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:07,229 INFO L225 Difference]: With dead ends: 3561 [2019-10-15 01:14:07,229 INFO L226 Difference]: Without dead ends: 1807 [2019-10-15 01:14:07,237 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 483 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2019-10-15 01:14:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1807. [2019-10-15 01:14:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2019-10-15 01:14:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2562 transitions. [2019-10-15 01:14:07,326 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2562 transitions. Word has length 246 [2019-10-15 01:14:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:07,326 INFO L462 AbstractCegarLoop]: Abstraction has 1807 states and 2562 transitions. [2019-10-15 01:14:07,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2562 transitions. [2019-10-15 01:14:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-15 01:14:07,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:07,334 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:07,542 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:07,543 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1659960313, now seen corresponding path program 1 times [2019-10-15 01:14:07,544 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:07,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023361908] [2019-10-15 01:14:07,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:07,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:07,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:07,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023361908] [2019-10-15 01:14:07,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256635861] [2019-10-15 01:14:07,831 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 01:14:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:08,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:08,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:08,788 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:09,264 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-10-15 01:14:09,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:09,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:09,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:09,627 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:09,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:09,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917101934] [2019-10-15 01:14:09,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:09,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:09,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:09,630 INFO L87 Difference]: Start difference. First operand 1807 states and 2562 transitions. Second operand 16 states. [2019-10-15 01:14:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:11,014 INFO L93 Difference]: Finished difference Result 3565 states and 5066 transitions. [2019-10-15 01:14:11,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:11,015 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 247 [2019-10-15 01:14:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:11,027 INFO L225 Difference]: With dead ends: 3565 [2019-10-15 01:14:11,028 INFO L226 Difference]: Without dead ends: 1819 [2019-10-15 01:14:11,034 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 480 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2019-10-15 01:14:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1817. [2019-10-15 01:14:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2019-10-15 01:14:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2573 transitions. [2019-10-15 01:14:11,127 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2573 transitions. Word has length 247 [2019-10-15 01:14:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:11,128 INFO L462 AbstractCegarLoop]: Abstraction has 1817 states and 2573 transitions. [2019-10-15 01:14:11,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2573 transitions. [2019-10-15 01:14:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-15 01:14:11,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:11,136 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:11,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:11,345 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:11,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:11,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1908875604, now seen corresponding path program 2 times [2019-10-15 01:14:11,350 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:11,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203681477] [2019-10-15 01:14:11,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:11,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:11,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:11,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203681477] [2019-10-15 01:14:11,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420058919] [2019-10-15 01:14:11,906 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 01:14:12,535 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:14:12,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:12,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:12,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:12,796 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:13,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:13,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:13,299 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:13,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-15 01:14:13,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375021227] [2019-10-15 01:14:13,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:13,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:13,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:13,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:14:13,302 INFO L87 Difference]: Start difference. First operand 1817 states and 2573 transitions. Second operand 12 states. [2019-10-15 01:14:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:14,366 INFO L93 Difference]: Finished difference Result 3556 states and 5054 transitions. [2019-10-15 01:14:14,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:14,367 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 248 [2019-10-15 01:14:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:14,377 INFO L225 Difference]: With dead ends: 3556 [2019-10-15 01:14:14,378 INFO L226 Difference]: Without dead ends: 1819 [2019-10-15 01:14:14,385 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 498 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2019-10-15 01:14:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1817. [2019-10-15 01:14:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2019-10-15 01:14:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2572 transitions. [2019-10-15 01:14:14,471 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2572 transitions. Word has length 248 [2019-10-15 01:14:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:14,471 INFO L462 AbstractCegarLoop]: Abstraction has 1817 states and 2572 transitions. [2019-10-15 01:14:14,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2572 transitions. [2019-10-15 01:14:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-15 01:14:14,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:14,478 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:14,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:14,689 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:14,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:14,689 INFO L82 PathProgramCache]: Analyzing trace with hash 81017526, now seen corresponding path program 3 times [2019-10-15 01:14:14,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:14,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897286620] [2019-10-15 01:14:14,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:15,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897286620] [2019-10-15 01:14:15,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392396898] [2019-10-15 01:14:15,629 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 01:14:16,171 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:14:16,172 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:16,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:16,186 INFO L279 TraceCheckSpWp]: Computing forward predicates...