/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_spec27_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:44,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:44,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:44,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:44,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:44,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:44,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:44,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:44,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:44,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:44,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:44,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:44,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:44,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:44,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:44,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:44,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:44,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:44,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:44,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:44,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:44,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:44,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:44,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:44,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:44,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:44,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:44,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:44,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:44,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:44,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:44,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:44,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:44,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:44,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:44,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:44,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:44,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:44,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:44,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:44,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:44,949 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 00:49:44,982 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:44,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:44,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:44,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:44,988 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:44,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:44,989 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:44,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:44,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:44,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:44,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:44,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:44,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:44,990 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:44,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:44,990 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:44,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:44,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:44,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:44,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:44,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:44,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:44,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:44,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:44,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:44,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:44,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:44,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:44,993 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 00:49:45,316 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:45,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:45,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:45,346 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:45,347 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:45,348 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-11-07 00:49:45,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d871913/3abab445487046c19e1fbbdcb84c1c20/FLAG8d68937c1 [2019-11-07 00:49:46,061 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:46,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-11-07 00:49:46,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d871913/3abab445487046c19e1fbbdcb84c1c20/FLAG8d68937c1 [2019-11-07 00:49:46,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d871913/3abab445487046c19e1fbbdcb84c1c20 [2019-11-07 00:49:46,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:46,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:46,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:46,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:46,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:46,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:46" (1/1) ... [2019-11-07 00:49:46,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594b665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:46, skipping insertion in model container [2019-11-07 00:49:46,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:46" (1/1) ... [2019-11-07 00:49:46,314 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:46,401 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:47,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:47,235 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:47,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:47,475 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:47,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47 WrapperNode [2019-11-07 00:49:47,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:47,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:47,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:47,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:47,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:47,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:47,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:47,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:47,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (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 00:49:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:47,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:47,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:47,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:47,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:47,817 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:47,819 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:47,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:47,819 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:47,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:47,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:47,820 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:47,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:47,820 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:47,820 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:47,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:47,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:47,823 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:47,824 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:49:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:49:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:49:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:47,825 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:47,826 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:49:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:49:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:49:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:47,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:47,843 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:47,844 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:50,267 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:50,267 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:50,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:50 BoogieIcfgContainer [2019-11-07 00:49:50,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:50,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:50,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:50,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:50,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:46" (1/3) ... [2019-11-07 00:49:50,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d029b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:50, skipping insertion in model container [2019-11-07 00:49:50,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (2/3) ... [2019-11-07 00:49:50,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d029b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:50, skipping insertion in model container [2019-11-07 00:49:50,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:50" (3/3) ... [2019-11-07 00:49:50,281 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2019-11-07 00:49:50,292 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:50,304 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:50,315 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:50,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:50,355 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:50,356 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:50,360 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:50,360 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:50,360 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:50,360 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:50,361 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2019-11-07 00:49:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-11-07 00:49:50,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:50,422 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, 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 00:49:50,424 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash -646444410, now seen corresponding path program 1 times [2019-11-07 00:49:50,441 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:50,442 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228287294] [2019-11-07 00:49:50,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:51,263 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 00:49:51,264 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228287294] [2019-11-07 00:49:51,265 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:51,266 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:51,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049046491] [2019-11-07 00:49:51,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:51,277 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:51,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:51,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:51,296 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 2 states. [2019-11-07 00:49:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:51,419 INFO L93 Difference]: Finished difference Result 859 states and 1175 transitions. [2019-11-07 00:49:51,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:51,420 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 218 [2019-11-07 00:49:51,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:51,443 INFO L225 Difference]: With dead ends: 859 [2019-11-07 00:49:51,444 INFO L226 Difference]: Without dead ends: 552 [2019-11-07 00:49:51,451 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 00:49:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2019-11-07 00:49:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2019-11-07 00:49:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2019-11-07 00:49:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 757 transitions. [2019-11-07 00:49:51,602 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 757 transitions. Word has length 218 [2019-11-07 00:49:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:51,607 INFO L462 AbstractCegarLoop]: Abstraction has 552 states and 757 transitions. [2019-11-07 00:49:51,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 757 transitions. [2019-11-07 00:49:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-11-07 00:49:51,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:51,621 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, 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 00:49:51,621 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash -884240524, now seen corresponding path program 1 times [2019-11-07 00:49:51,622 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:51,622 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20534125] [2019-11-07 00:49:51,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:52,043 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 00:49:52,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20534125] [2019-11-07 00:49:52,044 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:52,044 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:52,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169449331] [2019-11-07 00:49:52,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:52,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:52,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:52,048 INFO L87 Difference]: Start difference. First operand 552 states and 757 transitions. Second operand 3 states. [2019-11-07 00:49:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:52,104 INFO L93 Difference]: Finished difference Result 842 states and 1136 transitions. [2019-11-07 00:49:52,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:52,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2019-11-07 00:49:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:52,111 INFO L225 Difference]: With dead ends: 842 [2019-11-07 00:49:52,112 INFO L226 Difference]: Without dead ends: 555 [2019-11-07 00:49:52,115 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 00:49:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-07 00:49:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-11-07 00:49:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-11-07 00:49:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 759 transitions. [2019-11-07 00:49:52,164 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 759 transitions. Word has length 219 [2019-11-07 00:49:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:52,165 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 759 transitions. [2019-11-07 00:49:52,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 759 transitions. [2019-11-07 00:49:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-11-07 00:49:52,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:52,176 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, 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 00:49:52,177 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:52,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1184170792, now seen corresponding path program 1 times [2019-11-07 00:49:52,178 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:52,178 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353003222] [2019-11-07 00:49:52,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:52,453 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 00:49:52,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353003222] [2019-11-07 00:49:52,454 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:52,454 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:52,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012209237] [2019-11-07 00:49:52,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:52,460 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:52,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:52,461 INFO L87 Difference]: Start difference. First operand 554 states and 759 transitions. Second operand 3 states. [2019-11-07 00:49:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:52,514 INFO L93 Difference]: Finished difference Result 1084 states and 1516 transitions. [2019-11-07 00:49:52,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:52,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-11-07 00:49:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:52,523 INFO L225 Difference]: With dead ends: 1084 [2019-11-07 00:49:52,523 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:49:52,526 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 00:49:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:49:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-11-07 00:49:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-11-07 00:49:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 828 transitions. [2019-11-07 00:49:52,602 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 828 transitions. Word has length 225 [2019-11-07 00:49:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:52,602 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 828 transitions. [2019-11-07 00:49:52,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 828 transitions. [2019-11-07 00:49:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-11-07 00:49:52,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:52,608 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, 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 00:49:52,608 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1208160604, now seen corresponding path program 1 times [2019-11-07 00:49:52,609 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:52,609 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144523859] [2019-11-07 00:49:52,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:53,141 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 00:49:53,142 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144523859] [2019-11-07 00:49:53,142 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842819371] [2019-11-07 00:49:53,142 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 00:49:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:53,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:53,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:54,277 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 00:49:54,278 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:54,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:54,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:54,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:55,093 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 00:49:55,094 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:55,094 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:49:55,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377395602] [2019-11-07 00:49:55,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:49:55,095 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:49:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:49:55,097 INFO L87 Difference]: Start difference. First operand 594 states and 828 transitions. Second operand 9 states. [2019-11-07 00:49:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:56,503 INFO L93 Difference]: Finished difference Result 1166 states and 1636 transitions. [2019-11-07 00:49:56,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:49:56,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2019-11-07 00:49:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:56,508 INFO L225 Difference]: With dead ends: 1166 [2019-11-07 00:49:56,508 INFO L226 Difference]: Without dead ends: 608 [2019-11-07 00:49:56,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 439 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:49:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-07 00:49:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-11-07 00:49:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-11-07 00:49:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 846 transitions. [2019-11-07 00:49:56,540 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 846 transitions. Word has length 226 [2019-11-07 00:49:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:56,540 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 846 transitions. [2019-11-07 00:49:56,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:49:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 846 transitions. [2019-11-07 00:49:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-11-07 00:49:56,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:56,545 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, 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 00:49:56,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:56,756 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:56,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1796617889, now seen corresponding path program 1 times [2019-11-07 00:49:56,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:56,758 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554729924] [2019-11-07 00:49:56,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:57,279 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 00:49:57,280 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554729924] [2019-11-07 00:49:57,281 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59678255] [2019-11-07 00:49:57,281 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 00:49:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:57,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:57,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:58,162 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 00:49:58,163 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:58,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:58,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:58,633 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 00:49:58,634 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:58,634 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:49:58,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870309624] [2019-11-07 00:49:58,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:58,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:58,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:58,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:49:58,636 INFO L87 Difference]: Start difference. First operand 608 states and 846 transitions. Second operand 7 states. [2019-11-07 00:49:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:59,707 INFO L93 Difference]: Finished difference Result 1167 states and 1640 transitions. [2019-11-07 00:49:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:49:59,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2019-11-07 00:49:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:59,712 INFO L225 Difference]: With dead ends: 1167 [2019-11-07 00:49:59,713 INFO L226 Difference]: Without dead ends: 610 [2019-11-07 00:49:59,715 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:49:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2019-11-07 00:49:59,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2019-11-07 00:49:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-11-07 00:49:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 849 transitions. [2019-11-07 00:49:59,740 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 849 transitions. Word has length 227 [2019-11-07 00:49:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:59,741 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 849 transitions. [2019-11-07 00:49:59,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 849 transitions. [2019-11-07 00:49:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-11-07 00:49:59,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:59,746 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:59,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:59,954 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:59,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1532844782, now seen corresponding path program 1 times [2019-11-07 00:49:59,955 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:59,955 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796214471] [2019-11-07 00:49:59,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:00,372 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 00:50:00,373 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796214471] [2019-11-07 00:50:00,373 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91870490] [2019-11-07 00:50:00,373 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 00:50:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:01,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:01,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:01,298 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 00:50:01,298 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:01,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:01,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:01,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:02,052 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 00:50:02,052 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:02,052 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:50:02,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832828079] [2019-11-07 00:50:02,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:50:02,054 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:02,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:50:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:50:02,055 INFO L87 Difference]: Start difference. First operand 610 states and 849 transitions. Second operand 16 states. [2019-11-07 00:50:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:04,045 INFO L93 Difference]: Finished difference Result 1171 states and 1640 transitions. [2019-11-07 00:50:04,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:04,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 228 [2019-11-07 00:50:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:04,052 INFO L225 Difference]: With dead ends: 1171 [2019-11-07 00:50:04,052 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:50:04,054 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:50:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:50:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 620. [2019-11-07 00:50:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-11-07 00:50:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 860 transitions. [2019-11-07 00:50:04,081 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 860 transitions. Word has length 228 [2019-11-07 00:50:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:04,082 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 860 transitions. [2019-11-07 00:50:04,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:50:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 860 transitions. [2019-11-07 00:50:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-07 00:50:04,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:04,086 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, 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 00:50:04,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:04,302 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1891575635, now seen corresponding path program 2 times [2019-11-07 00:50:04,303 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:04,304 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870364261] [2019-11-07 00:50:04,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:04,665 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 00:50:04,666 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870364261] [2019-11-07 00:50:04,666 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535847115] [2019-11-07 00:50:04,666 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 00:50:05,305 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:05,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:05,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:05,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:05,530 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 00:50:05,531 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:05,963 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 00:50:05,963 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:05,964 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:50:05,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327150661] [2019-11-07 00:50:05,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:05,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:50:05,967 INFO L87 Difference]: Start difference. First operand 620 states and 860 transitions. Second operand 14 states. [2019-11-07 00:50:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:08,422 INFO L93 Difference]: Finished difference Result 2066 states and 2910 transitions. [2019-11-07 00:50:08,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:08,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 229 [2019-11-07 00:50:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:08,434 INFO L225 Difference]: With dead ends: 2066 [2019-11-07 00:50:08,434 INFO L226 Difference]: Without dead ends: 1792 [2019-11-07 00:50:08,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 454 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 00:50:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2019-11-07 00:50:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1470. [2019-11-07 00:50:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2019-11-07 00:50:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2105 transitions. [2019-11-07 00:50:08,528 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2105 transitions. Word has length 229 [2019-11-07 00:50:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:08,530 INFO L462 AbstractCegarLoop]: Abstraction has 1470 states and 2105 transitions. [2019-11-07 00:50:08,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2105 transitions. [2019-11-07 00:50:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-07 00:50:08,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:08,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:08,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:08,752 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash -929511835, now seen corresponding path program 1 times [2019-11-07 00:50:08,753 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:08,754 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637508481] [2019-11-07 00:50:08,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:09,206 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 00:50:09,207 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637508481] [2019-11-07 00:50:09,207 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745284054] [2019-11-07 00:50:09,208 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 00:50:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:09,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:09,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:10,163 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 00:50:10,163 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:10,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:10,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:10,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:11,045 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 00:50:11,046 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:11,047 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:50:11,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004539889] [2019-11-07 00:50:11,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:11,049 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:11,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:11,050 INFO L87 Difference]: Start difference. First operand 1470 states and 2105 transitions. Second operand 15 states. [2019-11-07 00:50:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:13,345 INFO L93 Difference]: Finished difference Result 2834 states and 4086 transitions. [2019-11-07 00:50:13,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:13,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 230 [2019-11-07 00:50:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:13,354 INFO L225 Difference]: With dead ends: 2834 [2019-11-07 00:50:13,354 INFO L226 Difference]: Without dead ends: 1476 [2019-11-07 00:50:13,360 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 447 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2019-11-07 00:50:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1470. [2019-11-07 00:50:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2019-11-07 00:50:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2103 transitions. [2019-11-07 00:50:13,434 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2103 transitions. Word has length 230 [2019-11-07 00:50:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:13,434 INFO L462 AbstractCegarLoop]: Abstraction has 1470 states and 2103 transitions. [2019-11-07 00:50:13,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:50:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2103 transitions. [2019-11-07 00:50:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-11-07 00:50:13,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:13,441 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, 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 00:50:13,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:13,650 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash -826085883, now seen corresponding path program 1 times [2019-11-07 00:50:13,650 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:13,651 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652311142] [2019-11-07 00:50:13,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:14,023 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 00:50:14,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652311142] [2019-11-07 00:50:14,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604329491] [2019-11-07 00:50:14,024 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 00:50:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:14,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:14,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:14,807 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 00:50:14,808 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:15,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:15,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:15,225 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 00:50:15,225 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:15,226 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:50:15,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212018488] [2019-11-07 00:50:15,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:15,228 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:15,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:50:15,229 INFO L87 Difference]: Start difference. First operand 1470 states and 2103 transitions. Second operand 12 states. [2019-11-07 00:50:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:16,474 INFO L93 Difference]: Finished difference Result 2295 states and 3246 transitions. [2019-11-07 00:50:16,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:50:16,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 231 [2019-11-07 00:50:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:16,481 INFO L225 Difference]: With dead ends: 2295 [2019-11-07 00:50:16,482 INFO L226 Difference]: Without dead ends: 1213 [2019-11-07 00:50:16,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 454 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2019-11-07 00:50:16,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2019-11-07 00:50:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-11-07 00:50:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1696 transitions. [2019-11-07 00:50:16,530 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1696 transitions. Word has length 231 [2019-11-07 00:50:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:16,531 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 1696 transitions. [2019-11-07 00:50:16,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:50:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1696 transitions. [2019-11-07 00:50:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-07 00:50:16,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:16,537 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, 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 00:50:16,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:16,738 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:16,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1191168292, now seen corresponding path program 2 times [2019-11-07 00:50:16,739 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:16,740 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132697915] [2019-11-07 00:50:16,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:17,014 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 00:50:17,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132697915] [2019-11-07 00:50:17,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705832417] [2019-11-07 00:50:17,017 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 00:50:17,625 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:17,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:17,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:17,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:17,794 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 00:50:17,794 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:18,287 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 00:50:18,287 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:18,287 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-11-07 00:50:18,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619967620] [2019-11-07 00:50:18,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:18,289 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:18,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:18,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:50:18,290 INFO L87 Difference]: Start difference. First operand 1213 states and 1696 transitions. Second operand 14 states.