java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:40,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:40,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:40,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:40,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:40,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:40,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:40,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:40,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:40,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:40,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:40,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:40,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:40,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:40,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:40,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:40,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:40,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:40,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:40,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:40,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:40,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:40,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:40,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:40,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:40,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:40,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:40,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:40,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:40,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:40,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:40,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:40,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:40,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:40,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:40,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:40,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:40,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:40,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:40,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:40,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:40,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:40,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:40,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:40,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:40,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:40,707 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:40,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:40,707 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:40,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:40,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:40,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:40,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:40,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:40,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:40,709 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:40,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:40,709 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:40,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:40,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:40,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:40,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:40,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:40,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:40,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:40,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:40,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:40,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:40,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:40,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:40,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:41,005 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:41,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:41,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:41,026 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:41,027 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:41,027 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2019-10-13 21:14:41,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df218a5f1/a8b4b899c37044258efde170a1a5f4f1/FLAGfe37514ca [2019-10-13 21:14:41,775 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:41,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2019-10-13 21:14:41,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df218a5f1/a8b4b899c37044258efde170a1a5f4f1/FLAGfe37514ca [2019-10-13 21:14:42,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df218a5f1/a8b4b899c37044258efde170a1a5f4f1 [2019-10-13 21:14:42,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:42,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:42,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:42,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:42,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:42,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:42" (1/1) ... [2019-10-13 21:14:42,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651415e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:42, skipping insertion in model container [2019-10-13 21:14:42,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:42" (1/1) ... [2019-10-13 21:14:42,120 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:42,215 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:43,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:43,051 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:43,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:43,281 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:43,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43 WrapperNode [2019-10-13 21:14:43,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:43,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:43,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:43,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:43,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:43,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:43,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:43,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:43,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:43,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:43,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:43,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:43,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:43,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:14:43,559 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:43,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:43,559 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:43,560 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:43,561 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:43,562 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:43,563 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:43,564 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:43,564 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:43,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:43,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:43,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:43,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:43,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:43,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:43,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:43,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:43,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:43,573 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:43,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:43,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:43,573 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:43,574 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:43,574 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:43,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:43,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:43,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:43,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:43,581 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:43,582 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:43,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:43,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:43,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:43,592 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:43,592 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:43,592 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:14:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:45,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:45,700 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:45,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:45 BoogieIcfgContainer [2019-10-13 21:14:45,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:45,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:45,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:45,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:45,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:42" (1/3) ... [2019-10-13 21:14:45,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa17cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:45, skipping insertion in model container [2019-10-13 21:14:45,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43" (2/3) ... [2019-10-13 21:14:45,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa17cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:45, skipping insertion in model container [2019-10-13 21:14:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:45" (3/3) ... [2019-10-13 21:14:45,710 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2019-10-13 21:14:45,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:45,736 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:45,747 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:45,788 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:45,788 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:45,789 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:45,789 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:45,789 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:45,789 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:45,789 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:45,789 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states. [2019-10-13 21:14:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:14:45,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:45,841 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:45,843 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1066825624, now seen corresponding path program 1 times [2019-10-13 21:14:45,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:45,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364416693] [2019-10-13 21:14:45,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:45,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:45,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:46,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364416693] [2019-10-13 21:14:46,481 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:46,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:46,482 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295585541] [2019-10-13 21:14:46,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:46,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:46,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:46,502 INFO L87 Difference]: Start difference. First operand 449 states. Second operand 2 states. [2019-10-13 21:14:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:46,571 INFO L93 Difference]: Finished difference Result 617 states and 816 transitions. [2019-10-13 21:14:46,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:46,573 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 177 [2019-10-13 21:14:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:46,609 INFO L225 Difference]: With dead ends: 617 [2019-10-13 21:14:46,610 INFO L226 Difference]: Without dead ends: 409 [2019-10-13 21:14:46,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-10-13 21:14:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2019-10-13 21:14:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2019-10-13 21:14:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 544 transitions. [2019-10-13 21:14:46,714 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 544 transitions. Word has length 177 [2019-10-13 21:14:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:46,717 INFO L462 AbstractCegarLoop]: Abstraction has 409 states and 544 transitions. [2019-10-13 21:14:46,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:46,717 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 544 transitions. [2019-10-13 21:14:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:14:46,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:46,724 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:46,724 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:46,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:46,725 INFO L82 PathProgramCache]: Analyzing trace with hash -455066040, now seen corresponding path program 1 times [2019-10-13 21:14:46,725 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:46,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580664065] [2019-10-13 21:14:46,725 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:46,726 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:46,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:46,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580664065] [2019-10-13 21:14:46,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:46,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:46,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685886345] [2019-10-13 21:14:46,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:46,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:46,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:46,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:46,950 INFO L87 Difference]: Start difference. First operand 409 states and 544 transitions. Second operand 3 states. [2019-10-13 21:14:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,018 INFO L93 Difference]: Finished difference Result 600 states and 782 transitions. [2019-10-13 21:14:47,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:47,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-10-13 21:14:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,024 INFO L225 Difference]: With dead ends: 600 [2019-10-13 21:14:47,025 INFO L226 Difference]: Without dead ends: 412 [2019-10-13 21:14:47,029 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2019-10-13 21:14:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2019-10-13 21:14:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-10-13 21:14:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 546 transitions. [2019-10-13 21:14:47,092 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 546 transitions. Word has length 178 [2019-10-13 21:14:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,097 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 546 transitions. [2019-10-13 21:14:47,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 546 transitions. [2019-10-13 21:14:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:14:47,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,103 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,103 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1895632684, now seen corresponding path program 1 times [2019-10-13 21:14:47,104 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271404109] [2019-10-13 21:14:47,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:47,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271404109] [2019-10-13 21:14:47,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:47,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415738715] [2019-10-13 21:14:47,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:47,427 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,428 INFO L87 Difference]: Start difference. First operand 411 states and 546 transitions. Second operand 3 states. [2019-10-13 21:14:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,497 INFO L93 Difference]: Finished difference Result 796 states and 1087 transitions. [2019-10-13 21:14:47,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:47,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-13 21:14:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,505 INFO L225 Difference]: With dead ends: 796 [2019-10-13 21:14:47,506 INFO L226 Difference]: Without dead ends: 450 [2019-10-13 21:14:47,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-13 21:14:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 449. [2019-10-13 21:14:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-13 21:14:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 612 transitions. [2019-10-13 21:14:47,558 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 612 transitions. Word has length 184 [2019-10-13 21:14:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,559 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 612 transitions. [2019-10-13 21:14:47,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 612 transitions. [2019-10-13 21:14:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:14:47,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,571 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,572 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1099086942, now seen corresponding path program 1 times [2019-10-13 21:14:47,573 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798617391] [2019-10-13 21:14:47,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:47,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798617391] [2019-10-13 21:14:47,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:47,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209315368] [2019-10-13 21:14:47,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:47,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:47,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:47,878 INFO L87 Difference]: Start difference. First operand 449 states and 612 transitions. Second operand 8 states. [2019-10-13 21:14:47,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,943 INFO L93 Difference]: Finished difference Result 619 states and 829 transitions. [2019-10-13 21:14:47,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:47,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2019-10-13 21:14:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,948 INFO L225 Difference]: With dead ends: 619 [2019-10-13 21:14:47,948 INFO L226 Difference]: Without dead ends: 449 [2019-10-13 21:14:47,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-10-13 21:14:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2019-10-13 21:14:47,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-13 21:14:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 611 transitions. [2019-10-13 21:14:47,968 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 611 transitions. Word has length 185 [2019-10-13 21:14:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:47,969 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 611 transitions. [2019-10-13 21:14:47,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 611 transitions. [2019-10-13 21:14:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-13 21:14:47,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,974 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,974 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1092785353, now seen corresponding path program 1 times [2019-10-13 21:14:47,975 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884357466] [2019-10-13 21:14:47,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:48,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884357466] [2019-10-13 21:14:48,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:48,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106488645] [2019-10-13 21:14:48,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:48,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:48,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:48,222 INFO L87 Difference]: Start difference. First operand 449 states and 611 transitions. Second operand 7 states. [2019-10-13 21:14:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:50,139 INFO L93 Difference]: Finished difference Result 812 states and 1070 transitions. [2019-10-13 21:14:50,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:50,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2019-10-13 21:14:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:50,145 INFO L225 Difference]: With dead ends: 812 [2019-10-13 21:14:50,145 INFO L226 Difference]: Without dead ends: 634 [2019-10-13 21:14:50,146 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-13 21:14:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2019-10-13 21:14:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-13 21:14:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 832 transitions. [2019-10-13 21:14:50,183 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 832 transitions. Word has length 192 [2019-10-13 21:14:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:50,184 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 832 transitions. [2019-10-13 21:14:50,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 832 transitions. [2019-10-13 21:14:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 21:14:50,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:50,188 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:50,189 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:50,189 INFO L82 PathProgramCache]: Analyzing trace with hash 562715681, now seen corresponding path program 1 times [2019-10-13 21:14:50,189 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:50,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393023] [2019-10-13 21:14:50,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:50,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:50,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393023] [2019-10-13 21:14:50,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:50,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2019-10-13 21:14:50,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6035077] [2019-10-13 21:14:50,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 21:14:50,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:50,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 21:14:50,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:14:50,605 INFO L87 Difference]: Start difference. First operand 625 states and 832 transitions. Second operand 22 states. [2019-10-13 21:14:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:51,120 INFO L93 Difference]: Finished difference Result 1043 states and 1362 transitions. [2019-10-13 21:14:51,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:14:51,120 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 193 [2019-10-13 21:14:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:51,125 INFO L225 Difference]: With dead ends: 1043 [2019-10-13 21:14:51,125 INFO L226 Difference]: Without dead ends: 663 [2019-10-13 21:14:51,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:14:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2019-10-13 21:14:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 659. [2019-10-13 21:14:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2019-10-13 21:14:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 872 transitions. [2019-10-13 21:14:51,157 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 872 transitions. Word has length 193 [2019-10-13 21:14:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:51,158 INFO L462 AbstractCegarLoop]: Abstraction has 659 states and 872 transitions. [2019-10-13 21:14:51,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 21:14:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 872 transitions. [2019-10-13 21:14:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:14:51,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:51,163 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:51,163 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:51,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2094009423, now seen corresponding path program 1 times [2019-10-13 21:14:51,164 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:51,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997354906] [2019-10-13 21:14:51,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:51,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:51,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997354906] [2019-10-13 21:14:51,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:51,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:51,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427278278] [2019-10-13 21:14:51,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:51,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:51,342 INFO L87 Difference]: Start difference. First operand 659 states and 872 transitions. Second operand 8 states. [2019-10-13 21:14:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:54,827 INFO L93 Difference]: Finished difference Result 1839 states and 2373 transitions. [2019-10-13 21:14:54,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:14:54,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2019-10-13 21:14:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:54,840 INFO L225 Difference]: With dead ends: 1839 [2019-10-13 21:14:54,840 INFO L226 Difference]: Without dead ends: 1473 [2019-10-13 21:14:54,842 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:14:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2019-10-13 21:14:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1459. [2019-10-13 21:14:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2019-10-13 21:14:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1896 transitions. [2019-10-13 21:14:54,916 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1896 transitions. Word has length 224 [2019-10-13 21:14:54,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:54,919 INFO L462 AbstractCegarLoop]: Abstraction has 1459 states and 1896 transitions. [2019-10-13 21:14:54,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1896 transitions. [2019-10-13 21:14:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:14:54,924 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:54,924 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:54,925 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash -458535677, now seen corresponding path program 1 times [2019-10-13 21:14:54,925 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:54,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003386458] [2019-10-13 21:14:54,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:54,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:54,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:55,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003386458] [2019-10-13 21:14:55,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:55,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:14:55,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690512531] [2019-10-13 21:14:55,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:14:55,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:55,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:14:55,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:55,372 INFO L87 Difference]: Start difference. First operand 1459 states and 1896 transitions. Second operand 18 states. [2019-10-13 21:14:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:55,824 INFO L93 Difference]: Finished difference Result 2072 states and 2679 transitions. [2019-10-13 21:14:55,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:14:55,825 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 225 [2019-10-13 21:14:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:55,832 INFO L225 Difference]: With dead ends: 2072 [2019-10-13 21:14:55,833 INFO L226 Difference]: Without dead ends: 1181 [2019-10-13 21:14:55,839 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-10-13 21:14:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1175. [2019-10-13 21:14:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-13 21:14:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1546 transitions. [2019-10-13 21:14:55,902 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1546 transitions. Word has length 225 [2019-10-13 21:14:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:55,903 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1546 transitions. [2019-10-13 21:14:55,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:14:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1546 transitions. [2019-10-13 21:14:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:14:55,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:55,910 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:55,910 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:55,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2120696884, now seen corresponding path program 1 times [2019-10-13 21:14:55,911 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:55,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837531443] [2019-10-13 21:14:55,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:55,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:55,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:14:56,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837531443] [2019-10-13 21:14:56,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922795156] [2019-10-13 21:14:56,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:56,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:14:56,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:14:56,987 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:57,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:14:57,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:57,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:14:57,734 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:57,735 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:14:57,735 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207940553] [2019-10-13 21:14:57,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:57,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:57,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:14:57,738 INFO L87 Difference]: Start difference. First operand 1175 states and 1546 transitions. Second operand 9 states. [2019-10-13 21:14:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:58,919 INFO L93 Difference]: Finished difference Result 2328 states and 3072 transitions. [2019-10-13 21:14:58,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:58,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-10-13 21:14:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:58,928 INFO L225 Difference]: With dead ends: 2328 [2019-10-13 21:14:58,928 INFO L226 Difference]: Without dead ends: 1189 [2019-10-13 21:14:58,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 454 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:14:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-13 21:14:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2019-10-13 21:14:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2019-10-13 21:14:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1564 transitions. [2019-10-13 21:14:59,011 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1564 transitions. Word has length 234 [2019-10-13 21:14:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:59,013 INFO L462 AbstractCegarLoop]: Abstraction has 1189 states and 1564 transitions. [2019-10-13 21:14:59,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1564 transitions. [2019-10-13 21:14:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:14:59,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:59,019 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:59,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:59,230 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:59,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:59,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2044368972, now seen corresponding path program 1 times [2019-10-13 21:14:59,231 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:59,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088890621] [2019-10-13 21:14:59,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:14:59,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088890621] [2019-10-13 21:14:59,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914686834] [2019-10-13 21:14:59,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:00,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:00,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:00,294 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:00,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:00,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:00,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:00,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:00,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582275801] [2019-10-13 21:15:00,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:00,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:00,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:00,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:00,772 INFO L87 Difference]: Start difference. First operand 1189 states and 1564 transitions. Second operand 7 states. [2019-10-13 21:15:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:01,588 INFO L93 Difference]: Finished difference Result 2329 states and 3076 transitions. [2019-10-13 21:15:01,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:01,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2019-10-13 21:15:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:01,596 INFO L225 Difference]: With dead ends: 2329 [2019-10-13 21:15:01,597 INFO L226 Difference]: Without dead ends: 1191 [2019-10-13 21:15:01,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 461 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2019-10-13 21:15:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2019-10-13 21:15:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2019-10-13 21:15:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1567 transitions. [2019-10-13 21:15:01,653 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1567 transitions. Word has length 235 [2019-10-13 21:15:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:01,653 INFO L462 AbstractCegarLoop]: Abstraction has 1191 states and 1567 transitions. [2019-10-13 21:15:01,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1567 transitions. [2019-10-13 21:15:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:15:01,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:01,659 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:01,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:01,873 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1414768713, now seen corresponding path program 1 times [2019-10-13 21:15:01,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:01,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106572547] [2019-10-13 21:15:01,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:02,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106572547] [2019-10-13 21:15:02,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588854984] [2019-10-13 21:15:02,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:02,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:02,881 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:03,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:03,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:03,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:03,474 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:03,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:03,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120647542] [2019-10-13 21:15:03,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:03,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:03,476 INFO L87 Difference]: Start difference. First operand 1191 states and 1567 transitions. Second operand 16 states. [2019-10-13 21:15:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:04,977 INFO L93 Difference]: Finished difference Result 2333 states and 3076 transitions. [2019-10-13 21:15:04,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:04,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2019-10-13 21:15:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:04,986 INFO L225 Difference]: With dead ends: 2333 [2019-10-13 21:15:04,987 INFO L226 Difference]: Without dead ends: 1203 [2019-10-13 21:15:04,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:04,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2019-10-13 21:15:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2019-10-13 21:15:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2019-10-13 21:15:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1578 transitions. [2019-10-13 21:15:05,057 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1578 transitions. Word has length 236 [2019-10-13 21:15:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:05,057 INFO L462 AbstractCegarLoop]: Abstraction has 1201 states and 1578 transitions. [2019-10-13 21:15:05,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1578 transitions. [2019-10-13 21:15:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:15:05,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:05,063 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:05,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:05,271 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:05,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1479108445, now seen corresponding path program 2 times [2019-10-13 21:15:05,272 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:05,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881907001] [2019-10-13 21:15:05,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:05,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:05,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:05,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881907001] [2019-10-13 21:15:05,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003922045] [2019-10-13 21:15:05,978 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:06,526 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:06,527 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:06,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:06,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:06,768 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:07,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:07,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:07,282 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:07,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:07,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081280639] [2019-10-13 21:15:07,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:07,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:07,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:07,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:07,285 INFO L87 Difference]: Start difference. First operand 1201 states and 1578 transitions. Second operand 12 states. [2019-10-13 21:15:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:08,198 INFO L93 Difference]: Finished difference Result 2324 states and 3064 transitions. [2019-10-13 21:15:08,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:08,199 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 237 [2019-10-13 21:15:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:08,204 INFO L225 Difference]: With dead ends: 2324 [2019-10-13 21:15:08,204 INFO L226 Difference]: Without dead ends: 1203 [2019-10-13 21:15:08,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 476 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2019-10-13 21:15:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2019-10-13 21:15:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2019-10-13 21:15:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1577 transitions. [2019-10-13 21:15:08,274 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1577 transitions. Word has length 237 [2019-10-13 21:15:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:08,274 INFO L462 AbstractCegarLoop]: Abstraction has 1201 states and 1577 transitions. [2019-10-13 21:15:08,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1577 transitions. [2019-10-13 21:15:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 21:15:08,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:08,278 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:08,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:08,488 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2131752002, now seen corresponding path program 3 times [2019-10-13 21:15:08,490 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:08,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908017289] [2019-10-13 21:15:08,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:08,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:08,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:08,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908017289] [2019-10-13 21:15:08,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698473302] [2019-10-13 21:15:08,979 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:09,453 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:15:09,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:09,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:09,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:09,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:09,964 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 21:15:10,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:10,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:10,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:10,694 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:10,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [29] total 42 [2019-10-13 21:15:10,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469984979] [2019-10-13 21:15:10,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:10,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:10,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:10,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1618, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:10,697 INFO L87 Difference]: Start difference. First operand 1201 states and 1577 transitions. Second operand 15 states. [2019-10-13 21:15:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:11,948 INFO L93 Difference]: Finished difference Result 2331 states and 3071 transitions. [2019-10-13 21:15:11,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:11,949 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 238 [2019-10-13 21:15:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:11,955 INFO L225 Difference]: With dead ends: 2331 [2019-10-13 21:15:11,955 INFO L226 Difference]: Without dead ends: 1205 [2019-10-13 21:15:11,960 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-13 21:15:12,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1201. [2019-10-13 21:15:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2019-10-13 21:15:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1576 transitions. [2019-10-13 21:15:12,013 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1576 transitions. Word has length 238 [2019-10-13 21:15:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:12,013 INFO L462 AbstractCegarLoop]: Abstraction has 1201 states and 1576 transitions. [2019-10-13 21:15:12,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1576 transitions. [2019-10-13 21:15:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-13 21:15:12,017 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:12,017 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:12,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:12,224 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:12,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:12,225 INFO L82 PathProgramCache]: Analyzing trace with hash -63726737, now seen corresponding path program 1 times [2019-10-13 21:15:12,226 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:12,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829180610] [2019-10-13 21:15:12,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:12,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:12,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:12,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829180610] [2019-10-13 21:15:12,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277817009] [2019-10-13 21:15:12,682 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 [2019-10-13 21:15:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:13,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:13,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:13,475 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:13,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:13,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:13,933 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:13,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 38 [2019-10-13 21:15:13,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982166559] [2019-10-13 21:15:13,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:15:13,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:13,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:15:13,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:15:13,936 INFO L87 Difference]: Start difference. First operand 1201 states and 1576 transitions. Second operand 11 states. [2019-10-13 21:15:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:15,178 INFO L93 Difference]: Finished difference Result 2328 states and 3068 transitions. [2019-10-13 21:15:15,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:15,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2019-10-13 21:15:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:15,185 INFO L225 Difference]: With dead ends: 2328 [2019-10-13 21:15:15,185 INFO L226 Difference]: Without dead ends: 1207 [2019-10-13 21:15:15,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 480 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:15:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2019-10-13 21:15:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1203. [2019-10-13 21:15:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2019-10-13 21:15:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1579 transitions. [2019-10-13 21:15:15,234 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1579 transitions. Word has length 239 [2019-10-13 21:15:15,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:15,234 INFO L462 AbstractCegarLoop]: Abstraction has 1203 states and 1579 transitions. [2019-10-13 21:15:15,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:15:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1579 transitions. [2019-10-13 21:15:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-13 21:15:15,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:15,238 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:15,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:15,448 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:15,449 INFO L82 PathProgramCache]: Analyzing trace with hash 41799991, now seen corresponding path program 1 times [2019-10-13 21:15:15,450 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:15,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390432598] [2019-10-13 21:15:15,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat