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_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:17,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:17,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:17,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:17,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:17,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:17,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:17,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:17,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:17,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:17,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:17,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:17,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:17,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:17,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:17,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:17,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:17,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:17,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:17,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:17,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:17,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:17,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:17,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:17,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:17,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:17,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:17,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:17,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:17,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:17,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:17,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:17,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:17,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:17,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:17,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:17,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:17,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:17,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:17,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:17,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:17,538 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 01:15:17,560 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:17,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:17,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:17,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:17,563 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:17,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:17,563 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:17,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:17,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:17,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:17,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:17,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:17,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:17,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:17,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:17,567 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:17,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:17,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:17,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:17,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:17,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:17,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:17,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:17,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:17,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:17,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:17,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:17,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:17,569 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 01:15:17,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:17,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:17,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:17,878 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:17,879 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:17,880 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-10-15 01:15:17,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def64f108/43cbee0436284d66b80d010cd8e4e8be/FLAGdf38b6850 [2019-10-15 01:15:18,628 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:18,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-10-15 01:15:18,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def64f108/43cbee0436284d66b80d010cd8e4e8be/FLAGdf38b6850 [2019-10-15 01:15:18,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def64f108/43cbee0436284d66b80d010cd8e4e8be [2019-10-15 01:15:18,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:18,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:18,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:18,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:18,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:18,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:18" (1/1) ... [2019-10-15 01:15:18,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@becdb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:18, skipping insertion in model container [2019-10-15 01:15:18,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:18" (1/1) ... [2019-10-15 01:15:18,814 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:18,890 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:19,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:19,669 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:19,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:19,898 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:19,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19 WrapperNode [2019-10-15 01:15:19,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:19,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:19,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:19,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:19,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:19,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:19,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:19,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:20,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:20,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:20,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (1/1) ... [2019-10-15 01:15:20,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:20,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:20,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:20,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:20,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (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 01:15:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:20,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:20,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:20,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:20,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:20,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:20,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:20,183 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:20,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:20,186 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:20,186 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:20,186 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:15:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:15:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:15:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:15:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:15:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:20,228 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:20,229 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:15:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:20,237 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:15:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:22,698 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:22,699 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:22,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:22 BoogieIcfgContainer [2019-10-15 01:15:22,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:22,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:22,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:22,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:22,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:18" (1/3) ... [2019-10-15 01:15:22,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777aa486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:22, skipping insertion in model container [2019-10-15 01:15:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:19" (2/3) ... [2019-10-15 01:15:22,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777aa486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:22, skipping insertion in model container [2019-10-15 01:15:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:22" (3/3) ... [2019-10-15 01:15:22,710 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2019-10-15 01:15:22,721 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:22,730 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:22,742 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:22,773 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:22,774 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:22,774 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:22,774 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:22,774 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:22,774 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:22,774 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:22,774 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states. [2019-10-15 01:15:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:15:22,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:22,844 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:22,847 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:22,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:22,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1092646589, now seen corresponding path program 1 times [2019-10-15 01:15:22,865 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:22,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788818673] [2019-10-15 01:15:22,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:22,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:22,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:23,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788818673] [2019-10-15 01:15:23,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:23,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:23,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736225860] [2019-10-15 01:15:23,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:23,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:23,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:23,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:23,547 INFO L87 Difference]: Start difference. First operand 494 states. Second operand 2 states. [2019-10-15 01:15:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:23,655 INFO L93 Difference]: Finished difference Result 730 states and 953 transitions. [2019-10-15 01:15:23,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:23,657 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-10-15 01:15:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:23,692 INFO L225 Difference]: With dead ends: 730 [2019-10-15 01:15:23,692 INFO L226 Difference]: Without dead ends: 471 [2019-10-15 01:15:23,703 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 01:15:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-15 01:15:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2019-10-15 01:15:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2019-10-15 01:15:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 621 transitions. [2019-10-15 01:15:23,832 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 621 transitions. Word has length 148 [2019-10-15 01:15:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:23,835 INFO L462 AbstractCegarLoop]: Abstraction has 471 states and 621 transitions. [2019-10-15 01:15:23,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 621 transitions. [2019-10-15 01:15:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:15:23,848 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:23,848 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:23,849 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash -810141649, now seen corresponding path program 1 times [2019-10-15 01:15:23,850 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:23,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297288276] [2019-10-15 01:15:23,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:23,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:23,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:24,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297288276] [2019-10-15 01:15:24,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:24,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:24,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087478028] [2019-10-15 01:15:24,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:24,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:24,211 INFO L87 Difference]: Start difference. First operand 471 states and 621 transitions. Second operand 3 states. [2019-10-15 01:15:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:24,295 INFO L93 Difference]: Finished difference Result 713 states and 922 transitions. [2019-10-15 01:15:24,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:24,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 01:15:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:24,300 INFO L225 Difference]: With dead ends: 713 [2019-10-15 01:15:24,300 INFO L226 Difference]: Without dead ends: 474 [2019-10-15 01:15:24,302 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 01:15:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-10-15 01:15:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2019-10-15 01:15:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-15 01:15:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 623 transitions. [2019-10-15 01:15:24,338 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 623 transitions. Word has length 149 [2019-10-15 01:15:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:24,339 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 623 transitions. [2019-10-15 01:15:24,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 623 transitions. [2019-10-15 01:15:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:15:24,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:24,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:24,343 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1944980387, now seen corresponding path program 1 times [2019-10-15 01:15:24,343 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:24,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504323622] [2019-10-15 01:15:24,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:24,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:24,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:24,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504323622] [2019-10-15 01:15:24,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:24,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:24,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914101583] [2019-10-15 01:15:24,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:24,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:24,565 INFO L87 Difference]: Start difference. First operand 473 states and 623 transitions. Second operand 3 states. [2019-10-15 01:15:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:24,618 INFO L93 Difference]: Finished difference Result 922 states and 1244 transitions. [2019-10-15 01:15:24,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:24,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:15:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:24,622 INFO L225 Difference]: With dead ends: 922 [2019-10-15 01:15:24,623 INFO L226 Difference]: Without dead ends: 514 [2019-10-15 01:15:24,625 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 01:15:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-10-15 01:15:24,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2019-10-15 01:15:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-15 01:15:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 692 transitions. [2019-10-15 01:15:24,658 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 692 transitions. Word has length 155 [2019-10-15 01:15:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:24,661 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 692 transitions. [2019-10-15 01:15:24,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 692 transitions. [2019-10-15 01:15:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 01:15:24,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:24,665 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:24,665 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1177925529, now seen corresponding path program 1 times [2019-10-15 01:15:24,665 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:24,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846264216] [2019-10-15 01:15:24,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:24,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:24,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:24,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846264216] [2019-10-15 01:15:24,911 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:24,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:24,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386065417] [2019-10-15 01:15:24,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:24,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:24,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:24,914 INFO L87 Difference]: Start difference. First operand 513 states and 692 transitions. Second operand 7 states. [2019-10-15 01:15:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:27,750 INFO L93 Difference]: Finished difference Result 983 states and 1285 transitions. [2019-10-15 01:15:27,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:27,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-10-15 01:15:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:27,757 INFO L225 Difference]: With dead ends: 983 [2019-10-15 01:15:27,757 INFO L226 Difference]: Without dead ends: 755 [2019-10-15 01:15:27,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2019-10-15 01:15:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 746. [2019-10-15 01:15:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-10-15 01:15:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 987 transitions. [2019-10-15 01:15:27,800 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 987 transitions. Word has length 156 [2019-10-15 01:15:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:27,801 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 987 transitions. [2019-10-15 01:15:27,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 987 transitions. [2019-10-15 01:15:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:15:27,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:27,805 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:27,805 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:27,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1743072704, now seen corresponding path program 1 times [2019-10-15 01:15:27,806 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:27,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106687936] [2019-10-15 01:15:27,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:27,807 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:27,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:28,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106687936] [2019-10-15 01:15:28,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:28,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:15:28,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736207406] [2019-10-15 01:15:28,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:28,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:28,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:28,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:28,144 INFO L87 Difference]: Start difference. First operand 746 states and 987 transitions. Second operand 16 states. [2019-10-15 01:15:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:28,520 INFO L93 Difference]: Finished difference Result 1263 states and 1648 transitions. [2019-10-15 01:15:28,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:15:28,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-10-15 01:15:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:28,528 INFO L225 Difference]: With dead ends: 1263 [2019-10-15 01:15:28,529 INFO L226 Difference]: Without dead ends: 778 [2019-10-15 01:15:28,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:15:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2019-10-15 01:15:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 774. [2019-10-15 01:15:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2019-10-15 01:15:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1024 transitions. [2019-10-15 01:15:28,582 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1024 transitions. Word has length 157 [2019-10-15 01:15:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:28,584 INFO L462 AbstractCegarLoop]: Abstraction has 774 states and 1024 transitions. [2019-10-15 01:15:28,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1024 transitions. [2019-10-15 01:15:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:15:28,587 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:28,588 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:28,588 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1940029047, now seen corresponding path program 1 times [2019-10-15 01:15:28,588 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:28,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757005574] [2019-10-15 01:15:28,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:28,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:28,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:28,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757005574] [2019-10-15 01:15:28,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:28,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:28,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000377976] [2019-10-15 01:15:28,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:28,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:28,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:28,776 INFO L87 Difference]: Start difference. First operand 774 states and 1024 transitions. Second operand 8 states. [2019-10-15 01:15:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:29,629 INFO L93 Difference]: Finished difference Result 1383 states and 1801 transitions. [2019-10-15 01:15:29,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:29,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2019-10-15 01:15:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:29,644 INFO L225 Difference]: With dead ends: 1383 [2019-10-15 01:15:29,644 INFO L226 Difference]: Without dead ends: 1296 [2019-10-15 01:15:29,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2019-10-15 01:15:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1283. [2019-10-15 01:15:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-10-15 01:15:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1679 transitions. [2019-10-15 01:15:29,733 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1679 transitions. Word has length 166 [2019-10-15 01:15:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:29,738 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1679 transitions. [2019-10-15 01:15:29,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1679 transitions. [2019-10-15 01:15:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:15:29,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:29,744 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:29,744 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash -511327191, now seen corresponding path program 1 times [2019-10-15 01:15:29,745 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:29,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956237034] [2019-10-15 01:15:29,746 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,746 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:30,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956237034] [2019-10-15 01:15:30,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:30,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:15:30,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061298708] [2019-10-15 01:15:30,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:30,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:30,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:30,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:15:30,018 INFO L87 Difference]: Start difference. First operand 1283 states and 1679 transitions. Second operand 15 states. [2019-10-15 01:15:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:30,571 INFO L93 Difference]: Finished difference Result 1762 states and 2282 transitions. [2019-10-15 01:15:30,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 01:15:30,572 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2019-10-15 01:15:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:30,581 INFO L225 Difference]: With dead ends: 1762 [2019-10-15 01:15:30,581 INFO L226 Difference]: Without dead ends: 1282 [2019-10-15 01:15:30,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-15 01:15:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1281. [2019-10-15 01:15:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2019-10-15 01:15:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1674 transitions. [2019-10-15 01:15:30,696 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1674 transitions. Word has length 167 [2019-10-15 01:15:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:30,697 INFO L462 AbstractCegarLoop]: Abstraction has 1281 states and 1674 transitions. [2019-10-15 01:15:30,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1674 transitions. [2019-10-15 01:15:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:15:30,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:30,701 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:30,701 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:30,701 INFO L82 PathProgramCache]: Analyzing trace with hash 211331651, now seen corresponding path program 2 times [2019-10-15 01:15:30,702 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:30,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627015106] [2019-10-15 01:15:30,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:30,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:30,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:30,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627015106] [2019-10-15 01:15:30,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021703712] [2019-10-15 01:15:30,941 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 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 01:15:31,386 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:31,387 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:31,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:31,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:31,693 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:32,195 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:32,196 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:32,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726110676] [2019-10-15 01:15:32,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:32,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:32,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:32,199 INFO L87 Difference]: Start difference. First operand 1281 states and 1674 transitions. Second operand 14 states. [2019-10-15 01:15:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:34,971 INFO L93 Difference]: Finished difference Result 3795 states and 4997 transitions. [2019-10-15 01:15:34,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:34,972 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2019-10-15 01:15:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:34,994 INFO L225 Difference]: With dead ends: 3795 [2019-10-15 01:15:34,994 INFO L226 Difference]: Without dead ends: 3788 [2019-10-15 01:15:34,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2019-10-15 01:15:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2767. [2019-10-15 01:15:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2767 states. [2019-10-15 01:15:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3696 transitions. [2019-10-15 01:15:35,161 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3696 transitions. Word has length 167 [2019-10-15 01:15:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:35,162 INFO L462 AbstractCegarLoop]: Abstraction has 2767 states and 3696 transitions. [2019-10-15 01:15:35,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3696 transitions. [2019-10-15 01:15:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:15:35,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:35,169 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:35,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:35,379 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:35,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1415451547, now seen corresponding path program 1 times [2019-10-15 01:15:35,380 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:35,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629847591] [2019-10-15 01:15:35,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:35,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:35,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:35,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629847591] [2019-10-15 01:15:35,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679577673] [2019-10-15 01:15:35,589 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 01:15:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:36,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:36,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:36,410 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:36,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:36,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:36,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:36,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:36,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761195298] [2019-10-15 01:15:36,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:36,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:36,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:36,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:36,753 INFO L87 Difference]: Start difference. First operand 2767 states and 3696 transitions. Second operand 7 states. [2019-10-15 01:15:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:38,297 INFO L93 Difference]: Finished difference Result 5507 states and 7363 transitions. [2019-10-15 01:15:38,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:38,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-10-15 01:15:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:38,322 INFO L225 Difference]: With dead ends: 5507 [2019-10-15 01:15:38,322 INFO L226 Difference]: Without dead ends: 2779 [2019-10-15 01:15:38,335 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2019-10-15 01:15:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2769. [2019-10-15 01:15:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2769 states. [2019-10-15 01:15:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3699 transitions. [2019-10-15 01:15:38,698 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3699 transitions. Word has length 170 [2019-10-15 01:15:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:38,699 INFO L462 AbstractCegarLoop]: Abstraction has 2769 states and 3699 transitions. [2019-10-15 01:15:38,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3699 transitions. [2019-10-15 01:15:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:15:38,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:38,709 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:15:38,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:38,927 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:38,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1281596506, now seen corresponding path program 1 times [2019-10-15 01:15:38,928 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:38,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695419996] [2019-10-15 01:15:38,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:39,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695419996] [2019-10-15 01:15:39,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077447140] [2019-10-15 01:15:39,143 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 01:15:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:39,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:39,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:15:39,972 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:40,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:40,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:40,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:40,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:40,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:15:40,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939647984] [2019-10-15 01:15:40,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:40,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:40,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:40,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:40,575 INFO L87 Difference]: Start difference. First operand 2769 states and 3699 transitions. Second operand 9 states. [2019-10-15 01:15:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:42,051 INFO L93 Difference]: Finished difference Result 5514 states and 7373 transitions. [2019-10-15 01:15:42,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:42,052 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2019-10-15 01:15:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:42,067 INFO L225 Difference]: With dead ends: 5514 [2019-10-15 01:15:42,067 INFO L226 Difference]: Without dead ends: 2787 [2019-10-15 01:15:42,076 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 326 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 01:15:42,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2019-10-15 01:15:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2019-10-15 01:15:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2019-10-15 01:15:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3715 transitions. [2019-10-15 01:15:42,216 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3715 transitions. Word has length 171 [2019-10-15 01:15:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:42,217 INFO L462 AbstractCegarLoop]: Abstraction has 2785 states and 3715 transitions. [2019-10-15 01:15:42,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3715 transitions. [2019-10-15 01:15:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:15:42,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,225 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:42,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:42,432 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,433 INFO L82 PathProgramCache]: Analyzing trace with hash -239640913, now seen corresponding path program 1 times [2019-10-15 01:15:42,433 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792440660] [2019-10-15 01:15:42,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:42,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792440660] [2019-10-15 01:15:42,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913266360] [2019-10-15 01:15:42,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 01:15:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:43,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:43,225 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:43,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:43,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:43,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:43,798 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:43,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:15:43,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268748537] [2019-10-15 01:15:43,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:43,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:15:43,801 INFO L87 Difference]: Start difference. First operand 2785 states and 3715 transitions. Second operand 16 states. [2019-10-15 01:15:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:45,146 INFO L93 Difference]: Finished difference Result 5506 states and 7354 transitions. [2019-10-15 01:15:45,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:45,152 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-10-15 01:15:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:45,170 INFO L225 Difference]: With dead ends: 5506 [2019-10-15 01:15:45,170 INFO L226 Difference]: Without dead ends: 2809 [2019-10-15 01:15:45,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 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 01:15:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2019-10-15 01:15:45,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2807. [2019-10-15 01:15:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2019-10-15 01:15:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3740 transitions. [2019-10-15 01:15:45,315 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3740 transitions. Word has length 172 [2019-10-15 01:15:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:45,316 INFO L462 AbstractCegarLoop]: Abstraction has 2807 states and 3740 transitions. [2019-10-15 01:15:45,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3740 transitions. [2019-10-15 01:15:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:15:45,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:45,326 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:45,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:45,534 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash -194664184, now seen corresponding path program 2 times [2019-10-15 01:15:45,535 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:45,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910602202] [2019-10-15 01:15:45,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:45,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910602202] [2019-10-15 01:15:45,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18350357] [2019-10-15 01:15:45,811 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 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 01:15:46,368 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:15:46,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:46,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:46,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:46,489 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:46,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:46,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:46,852 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:46,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 01:15:46,853 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876417412] [2019-10-15 01:15:46,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:15:46,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:15:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:46,854 INFO L87 Difference]: Start difference. First operand 2807 states and 3740 transitions. Second operand 11 states. [2019-10-15 01:15:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:48,239 INFO L93 Difference]: Finished difference Result 5278 states and 6996 transitions. [2019-10-15 01:15:48,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:48,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2019-10-15 01:15:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:48,258 INFO L225 Difference]: With dead ends: 5278 [2019-10-15 01:15:48,258 INFO L226 Difference]: Without dead ends: 2595 [2019-10-15 01:15:48,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 336 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:15:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-10-15 01:15:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2587. [2019-10-15 01:15:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-10-15 01:15:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3392 transitions. [2019-10-15 01:15:48,404 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3392 transitions. Word has length 173 [2019-10-15 01:15:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:48,404 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3392 transitions. [2019-10-15 01:15:48,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:15:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3392 transitions. [2019-10-15 01:15:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:15:48,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:48,416 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:15:48,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:48,625 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:48,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2066785607, now seen corresponding path program 1 times [2019-10-15 01:15:48,627 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:48,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163860949] [2019-10-15 01:15:48,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:15:48,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163860949] [2019-10-15 01:15:48,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3041394] [2019-10-15 01:15:48,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:49,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:49,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:49,500 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:49,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:49,928 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:49,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:50,080 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:50,081 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 20 [2019-10-15 01:15:50,081 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922986527] [2019-10-15 01:15:50,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:50,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:50,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:50,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:50,082 INFO L87 Difference]: Start difference. First operand 2587 states and 3392 transitions. Second operand 15 states.