/usr/bin/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_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:51:02,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:51:02,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:51:02,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:51:02,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:51:02,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:51:02,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:51:02,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:51:02,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:51:02,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:51:02,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:51:02,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:51:02,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:51:02,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:51:02,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:51:02,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:51:02,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:51:02,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:51:02,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:51:02,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:51:02,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:51:02,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:51:02,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:51:02,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:51:02,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:51:02,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:51:02,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:51:02,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:51:02,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:51:02,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:51:02,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:51:02,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:51:02,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:51:02,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:51:02,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:51:02,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:51:02,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:51:02,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:51:02,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:51:02,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:51:02,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:51:02,760 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 [2019-11-07 00:51:02,773 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:51:02,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:51:02,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:51:02,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:51:02,775 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:51:02,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:51:02,776 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:51:02,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:51:02,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:51:02,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:51:02,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:51:02,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:51:02,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:51:02,777 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:51:02,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:51:02,777 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:51:02,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:51:02,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:51:02,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:51:02,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:51:02,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:51:02,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:02,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:51:02,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:51:02,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:51:02,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:51:02,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:51:02,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:51:02,780 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 [2019-11-07 00:51:03,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:51:03,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:51:03,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:51:03,135 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:51:03,135 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:51:03,136 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2019-11-07 00:51:03,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90b4535a/785346c183da420f9d2aed2a1634556a/FLAG310df5579 [2019-11-07 00:51:03,860 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:51:03,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product28.cil.c [2019-11-07 00:51:03,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90b4535a/785346c183da420f9d2aed2a1634556a/FLAG310df5579 [2019-11-07 00:51:04,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90b4535a/785346c183da420f9d2aed2a1634556a [2019-11-07 00:51:04,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:51:04,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:51:04,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:04,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:51:04,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:51:04,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:04" (1/1) ... [2019-11-07 00:51:04,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1559b56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:04, skipping insertion in model container [2019-11-07 00:51:04,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:04" (1/1) ... [2019-11-07 00:51:04,049 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:51:04,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:04,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:04,967 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:05,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:05,189 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:05,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05 WrapperNode [2019-11-07 00:51:05,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:05,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:05,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:05,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:05,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:05,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:05,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:05,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:05,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (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 [2019-11-07 00:51:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:51:05,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:51:05,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:51:05,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:05,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:51:05,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:05,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:05,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:05,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:05,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:05,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:05,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:05,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:05,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:05,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:05,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:05,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:05,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:05,502 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:05,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:05,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:05,504 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:05,505 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:05,505 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:05,506 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:05,506 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:05,506 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:05,506 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:05,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:05,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:05,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:05,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:05,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:05,513 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:05,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:05,514 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:05,514 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:05,514 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:05,514 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:05,515 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:05,515 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:05,515 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:05,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:05,515 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:51:05,515 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:51:05,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:05,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:51:05,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:51:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:51:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:05,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:05,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:05,532 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:05,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:05,546 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:05,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:05,548 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:07,862 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:07,862 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:07,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:07 BoogieIcfgContainer [2019-11-07 00:51:07,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:07,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:07,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:07,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:07,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:04" (1/3) ... [2019-11-07 00:51:07,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214d7298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:07, skipping insertion in model container [2019-11-07 00:51:07,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05" (2/3) ... [2019-11-07 00:51:07,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214d7298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:07, skipping insertion in model container [2019-11-07 00:51:07,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:07" (3/3) ... [2019-11-07 00:51:07,872 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2019-11-07 00:51:07,882 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:07,892 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:07,904 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:07,940 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:07,940 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:07,940 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:07,940 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:07,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:07,941 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:07,942 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:07,946 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2019-11-07 00:51:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:51:08,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:08,023 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 00:51:08,025 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1535758530, now seen corresponding path program 1 times [2019-11-07 00:51:08,045 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:08,046 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723537633] [2019-11-07 00:51:08,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:08,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723537633] [2019-11-07 00:51:08,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:08,807 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:08,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941935170] [2019-11-07 00:51:08,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:08,820 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:08,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:08,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:08,840 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 2 states. [2019-11-07 00:51:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:08,946 INFO L93 Difference]: Finished difference Result 739 states and 985 transitions. [2019-11-07 00:51:08,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:08,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-11-07 00:51:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:08,969 INFO L225 Difference]: With dead ends: 739 [2019-11-07 00:51:08,969 INFO L226 Difference]: Without dead ends: 470 [2019-11-07 00:51:08,976 INFO L630 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 [2019-11-07 00:51:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-11-07 00:51:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-11-07 00:51:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-11-07 00:51:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 627 transitions. [2019-11-07 00:51:09,114 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 627 transitions. Word has length 195 [2019-11-07 00:51:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:09,118 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 627 transitions. [2019-11-07 00:51:09,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 627 transitions. [2019-11-07 00:51:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:51:09,127 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:09,127 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 00:51:09,128 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:09,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1501610490, now seen corresponding path program 1 times [2019-11-07 00:51:09,129 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:09,129 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052868143] [2019-11-07 00:51:09,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:09,539 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052868143] [2019-11-07 00:51:09,540 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:09,540 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:09,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248002553] [2019-11-07 00:51:09,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:09,548 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:09,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:09,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:09,549 INFO L87 Difference]: Start difference. First operand 470 states and 627 transitions. Second operand 3 states. [2019-11-07 00:51:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:09,620 INFO L93 Difference]: Finished difference Result 722 states and 948 transitions. [2019-11-07 00:51:09,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:09,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-11-07 00:51:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:09,628 INFO L225 Difference]: With dead ends: 722 [2019-11-07 00:51:09,629 INFO L226 Difference]: Without dead ends: 473 [2019-11-07 00:51:09,635 INFO L630 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 [2019-11-07 00:51:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-11-07 00:51:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2019-11-07 00:51:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-11-07 00:51:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 629 transitions. [2019-11-07 00:51:09,668 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 629 transitions. Word has length 196 [2019-11-07 00:51:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:09,669 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 629 transitions. [2019-11-07 00:51:09,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 629 transitions. [2019-11-07 00:51:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-07 00:51:09,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:09,676 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 00:51:09,677 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:09,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1703734010, now seen corresponding path program 1 times [2019-11-07 00:51:09,677 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:09,678 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345819020] [2019-11-07 00:51:09,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:09,900 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345819020] [2019-11-07 00:51:09,900 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:09,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:09,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700746205] [2019-11-07 00:51:09,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:09,904 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:09,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:09,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:09,905 INFO L87 Difference]: Start difference. First operand 472 states and 629 transitions. Second operand 3 states. [2019-11-07 00:51:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:09,946 INFO L93 Difference]: Finished difference Result 918 states and 1253 transitions. [2019-11-07 00:51:09,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:09,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-11-07 00:51:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:09,954 INFO L225 Difference]: With dead ends: 918 [2019-11-07 00:51:09,954 INFO L226 Difference]: Without dead ends: 511 [2019-11-07 00:51:09,956 INFO L630 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 [2019-11-07 00:51:09,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2019-11-07 00:51:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 510. [2019-11-07 00:51:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-11-07 00:51:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 695 transitions. [2019-11-07 00:51:09,994 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 695 transitions. Word has length 202 [2019-11-07 00:51:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:09,995 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 695 transitions. [2019-11-07 00:51:09,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 695 transitions. [2019-11-07 00:51:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:51:10,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:10,006 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 00:51:10,007 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash -940076344, now seen corresponding path program 1 times [2019-11-07 00:51:10,008 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:10,008 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393093504] [2019-11-07 00:51:10,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:10,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393093504] [2019-11-07 00:51:10,608 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374097819] [2019-11-07 00:51:10,608 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 [2019-11-07 00:51:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:11,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:11,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:11,623 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:12,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:12,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:12,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:12,429 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:12,429 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:51:12,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255551371] [2019-11-07 00:51:12,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:51:12,430 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:12,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:51:12,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:12,432 INFO L87 Difference]: Start difference. First operand 510 states and 695 transitions. Second operand 9 states. [2019-11-07 00:51:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:14,613 INFO L93 Difference]: Finished difference Result 998 states and 1370 transitions. [2019-11-07 00:51:14,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:51:14,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-11-07 00:51:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:14,660 INFO L225 Difference]: With dead ends: 998 [2019-11-07 00:51:14,660 INFO L226 Difference]: Without dead ends: 524 [2019-11-07 00:51:14,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 393 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:51:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-11-07 00:51:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2019-11-07 00:51:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2019-11-07 00:51:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 713 transitions. [2019-11-07 00:51:14,691 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 713 transitions. Word has length 203 [2019-11-07 00:51:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:14,692 INFO L462 AbstractCegarLoop]: Abstraction has 524 states and 713 transitions. [2019-11-07 00:51:14,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:51:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 713 transitions. [2019-11-07 00:51:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:51:14,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:14,696 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 00:51:14,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:14,904 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash -857353803, now seen corresponding path program 1 times [2019-11-07 00:51:14,905 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:14,905 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860488674] [2019-11-07 00:51:14,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:15,430 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860488674] [2019-11-07 00:51:15,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227495895] [2019-11-07 00:51:15,431 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 [2019-11-07 00:51:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:16,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:16,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:16,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:16,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:16,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:16,834 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:16,834 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:51:16,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683713959] [2019-11-07 00:51:16,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:16,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:16,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:16,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:16,836 INFO L87 Difference]: Start difference. First operand 524 states and 713 transitions. Second operand 7 states. [2019-11-07 00:51:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:17,946 INFO L93 Difference]: Finished difference Result 999 states and 1374 transitions. [2019-11-07 00:51:17,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:17,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-11-07 00:51:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:17,951 INFO L225 Difference]: With dead ends: 999 [2019-11-07 00:51:17,951 INFO L226 Difference]: Without dead ends: 526 [2019-11-07 00:51:17,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:51:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-11-07 00:51:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2019-11-07 00:51:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-11-07 00:51:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 716 transitions. [2019-11-07 00:51:17,978 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 716 transitions. Word has length 204 [2019-11-07 00:51:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:17,979 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 716 transitions. [2019-11-07 00:51:17,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 716 transitions. [2019-11-07 00:51:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:51:17,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:17,983 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:18,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:18,185 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:18,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:18,185 INFO L82 PathProgramCache]: Analyzing trace with hash 664623728, now seen corresponding path program 1 times [2019-11-07 00:51:18,186 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:18,186 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257644977] [2019-11-07 00:51:18,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:18,708 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257644977] [2019-11-07 00:51:18,709 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37954388] [2019-11-07 00:51:18,709 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 [2019-11-07 00:51:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:19,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:19,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:19,578 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:19,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:20,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:20,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:20,238 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:20,239 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:51:20,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986112472] [2019-11-07 00:51:20,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:51:20,240 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:51:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:51:20,241 INFO L87 Difference]: Start difference. First operand 526 states and 716 transitions. Second operand 16 states. [2019-11-07 00:51:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:22,278 INFO L93 Difference]: Finished difference Result 1003 states and 1374 transitions. [2019-11-07 00:51:22,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:22,279 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-11-07 00:51:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:22,283 INFO L225 Difference]: With dead ends: 1003 [2019-11-07 00:51:22,284 INFO L226 Difference]: Without dead ends: 538 [2019-11-07 00:51:22,286 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:51:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-07 00:51:22,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2019-11-07 00:51:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2019-11-07 00:51:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 727 transitions. [2019-11-07 00:51:22,312 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 727 transitions. Word has length 205 [2019-11-07 00:51:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:22,313 INFO L462 AbstractCegarLoop]: Abstraction has 536 states and 727 transitions. [2019-11-07 00:51:22,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:51:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 727 transitions. [2019-11-07 00:51:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 00:51:22,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:22,317 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:22,528 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:22,528 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:22,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2034447971, now seen corresponding path program 2 times [2019-11-07 00:51:22,529 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:22,529 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81645263] [2019-11-07 00:51:22,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:22,869 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81645263] [2019-11-07 00:51:22,870 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352569347] [2019-11-07 00:51:22,870 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 [2019-11-07 00:51:23,399 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:51:23,399 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:51:23,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:51:23,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:23,598 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:24,159 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:24,159 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:51:24,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042306777] [2019-11-07 00:51:24,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:51:24,161 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:24,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:51:24,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:51:24,162 INFO L87 Difference]: Start difference. First operand 536 states and 727 transitions. Second operand 14 states. [2019-11-07 00:51:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:26,060 INFO L93 Difference]: Finished difference Result 1771 states and 2441 transitions. [2019-11-07 00:51:26,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:51:26,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 206 [2019-11-07 00:51:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:26,072 INFO L225 Difference]: With dead ends: 1771 [2019-11-07 00:51:26,072 INFO L226 Difference]: Without dead ends: 1540 [2019-11-07 00:51:26,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:51:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2019-11-07 00:51:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1255. [2019-11-07 00:51:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-11-07 00:51:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1763 transitions. [2019-11-07 00:51:26,160 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1763 transitions. Word has length 206 [2019-11-07 00:51:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:26,162 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1763 transitions. [2019-11-07 00:51:26,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:51:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1763 transitions. [2019-11-07 00:51:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-07 00:51:26,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:26,169 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:26,375 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:26,376 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:26,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:26,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1383757944, now seen corresponding path program 1 times [2019-11-07 00:51:26,377 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:26,377 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632299963] [2019-11-07 00:51:26,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:26,717 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632299963] [2019-11-07 00:51:26,717 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782604134] [2019-11-07 00:51:26,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 00:51:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:27,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:27,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:27,565 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:27,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:27,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:28,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:28,179 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:28,179 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:51:28,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923362359] [2019-11-07 00:51:28,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:51:28,180 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:51:28,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:28,181 INFO L87 Difference]: Start difference. First operand 1255 states and 1763 transitions. Second operand 15 states. [2019-11-07 00:51:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:29,658 INFO L93 Difference]: Finished difference Result 2404 states and 3402 transitions. [2019-11-07 00:51:29,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:29,659 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 207 [2019-11-07 00:51:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:29,669 INFO L225 Difference]: With dead ends: 2404 [2019-11-07 00:51:29,669 INFO L226 Difference]: Without dead ends: 1261 [2019-11-07 00:51:29,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 401 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2019-11-07 00:51:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1255. [2019-11-07 00:51:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-11-07 00:51:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1761 transitions. [2019-11-07 00:51:29,740 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1761 transitions. Word has length 207 [2019-11-07 00:51:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:29,740 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1761 transitions. [2019-11-07 00:51:29,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:51:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1761 transitions. [2019-11-07 00:51:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-11-07 00:51:29,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:29,746 INFO L410 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] [2019-11-07 00:51:29,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:29,963 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:29,963 INFO L82 PathProgramCache]: Analyzing trace with hash 615144256, now seen corresponding path program 1 times [2019-11-07 00:51:29,964 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:29,969 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609709089] [2019-11-07 00:51:29,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:30,277 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609709089] [2019-11-07 00:51:30,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309278377] [2019-11-07 00:51:30,278 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 [2019-11-07 00:51:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:30,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:30,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:31,040 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:31,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:31,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:51:31,494 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:31,494 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:51:31,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169964971] [2019-11-07 00:51:31,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:51:31,497 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:31,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:51:31,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:51:31,498 INFO L87 Difference]: Start difference. First operand 1255 states and 1761 transitions. Second operand 12 states. [2019-11-07 00:51:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:33,312 INFO L93 Difference]: Finished difference Result 1957 states and 2712 transitions. [2019-11-07 00:51:33,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:51:33,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 208 [2019-11-07 00:51:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:33,318 INFO L225 Difference]: With dead ends: 1957 [2019-11-07 00:51:33,318 INFO L226 Difference]: Without dead ends: 1044 [2019-11-07 00:51:33,322 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-11-07 00:51:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2019-11-07 00:51:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2019-11-07 00:51:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1429 transitions. [2019-11-07 00:51:33,375 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1429 transitions. Word has length 208 [2019-11-07 00:51:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:33,377 INFO L462 AbstractCegarLoop]: Abstraction has 1044 states and 1429 transitions. [2019-11-07 00:51:33,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:51:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1429 transitions. [2019-11-07 00:51:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:51:33,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:33,382 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:33,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:33,599 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:33,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1383633511, now seen corresponding path program 2 times [2019-11-07 00:51:33,599 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:33,600 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452841248] [2019-11-07 00:51:33,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:51:33,872 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452841248] [2019-11-07 00:51:33,872 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723332055] [2019-11-07 00:51:33,872 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:34,450 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:51:34,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:51:34,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:51:34,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:34,601 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:35,088 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:35,088 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-11-07 00:51:35,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931490930] [2019-11-07 00:51:35,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:51:35,089 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:35,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:51:35,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:51:35,090 INFO L87 Difference]: Start difference. First operand 1044 states and 1429 transitions. Second operand 14 states. [2019-11-07 00:51:37,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:37,674 INFO L93 Difference]: Finished difference Result 3499 states and 4865 transitions. [2019-11-07 00:51:37,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:51:37,674 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2019-11-07 00:51:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:37,692 INFO L225 Difference]: With dead ends: 3499 [2019-11-07 00:51:37,692 INFO L226 Difference]: Without dead ends: 3031 [2019-11-07 00:51:37,696 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 415 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 00:51:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2019-11-07 00:51:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2461. [2019-11-07 00:51:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2461 states. [2019-11-07 00:51:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3494 transitions. [2019-11-07 00:51:37,874 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3494 transitions. Word has length 209 [2019-11-07 00:51:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:37,876 INFO L462 AbstractCegarLoop]: Abstraction has 2461 states and 3494 transitions. [2019-11-07 00:51:37,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:51:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3494 transitions. [2019-11-07 00:51:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:51:37,887 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:37,887 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 00:51:38,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:38,095 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:38,096 INFO L82 PathProgramCache]: Analyzing trace with hash -938187755, now seen corresponding path program 1 times [2019-11-07 00:51:38,096 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:38,096 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810218376] [2019-11-07 00:51:38,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:51:38,246 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810218376] [2019-11-07 00:51:38,246 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961740496] [2019-11-07 00:51:38,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:38,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:38,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:51:39,024 INFO L321 TraceCheckSpWp]: Computing backward predicates...