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_spec0_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:01,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:01,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:01,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:01,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:01,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:01,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:01,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:01,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:01,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:01,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:01,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:01,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:01,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:01,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:01,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:01,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:01,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:01,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:01,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:01,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:01,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:01,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:01,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:01,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:01,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:01,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:01,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:01,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:02,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:13:02,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:13:02,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:13:02,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:13:02,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:13:02,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:13:02,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:13:02,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:13:02,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:13:02,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:13:02,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:13:02,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:13:02,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:13:02,023 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:13:02,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:13:02,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:13:02,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:13:02,026 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:13:02,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:13:02,026 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:13:02,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:13:02,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:13:02,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:13:02,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:13:02,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:13:02,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:13:02,028 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:13:02,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:13:02,028 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:13:02,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:13:02,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:13:02,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:13:02,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:13:02,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:13:02,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:02,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:13:02,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:13:02,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:13:02,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:13:02,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:13:02,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:13:02,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:13:02,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:13:02,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:13:02,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:13:02,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:13:02,335 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:13:02,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product35.cil.c [2019-10-13 21:13:02,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab13e4b88/4e4ee73a95874c1d9b7b5a799ef4020d/FLAG84283ca79 [2019-10-13 21:13:03,081 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:03,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product35.cil.c [2019-10-13 21:13:03,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab13e4b88/4e4ee73a95874c1d9b7b5a799ef4020d/FLAG84283ca79 [2019-10-13 21:13:03,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab13e4b88/4e4ee73a95874c1d9b7b5a799ef4020d [2019-10-13 21:13:03,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:03,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:03,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:03,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:03,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:03,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:03" (1/1) ... [2019-10-13 21:13:03,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b91cb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:03, skipping insertion in model container [2019-10-13 21:13:03,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:03" (1/1) ... [2019-10-13 21:13:03,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:03,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:04,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:04,340 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:04,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:04,605 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:04,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04 WrapperNode [2019-10-13 21:13:04,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:04,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:04,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:04,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:04,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... [2019-10-13 21:13:04,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:04,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:04,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:04,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:04,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:13:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:13:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-10-13 21:13:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:04,907 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:13:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:13:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:13:04,908 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:04,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:13:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:13:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:13:04,910 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:13:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:04,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:04,919 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:04,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:04,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:13:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:13:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:04,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:04,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:04,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:04,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:04,928 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:04,930 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:04,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:13:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:13:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-10-13 21:13:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:13:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:13:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:13:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:13:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:13:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:13:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:13:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:13:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:13:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:13:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:04,973 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:07,480 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:07,481 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:07,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:07 BoogieIcfgContainer [2019-10-13 21:13:07,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:07,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:07,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:07,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:07,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:03" (1/3) ... [2019-10-13 21:13:07,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:07, skipping insertion in model container [2019-10-13 21:13:07,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:04" (2/3) ... [2019-10-13 21:13:07,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c20228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:07, skipping insertion in model container [2019-10-13 21:13:07,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:07" (3/3) ... [2019-10-13 21:13:07,498 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.c [2019-10-13 21:13:07,509 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:07,522 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:07,536 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:07,581 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:07,581 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:07,581 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:07,581 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:07,581 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:07,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:07,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:07,582 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states. [2019-10-13 21:13:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 21:13:07,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:07,669 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2019-10-13 21:13:07,672 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:07,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:07,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1323292494, now seen corresponding path program 1 times [2019-10-13 21:13:07,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:07,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040597639] [2019-10-13 21:13:07,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:07,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:07,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:08,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040597639] [2019-10-13 21:13:08,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:08,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:08,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879389501] [2019-10-13 21:13:08,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:08,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:08,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:08,457 INFO L87 Difference]: Start difference. First operand 680 states. Second operand 2 states. [2019-10-13 21:13:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:08,551 INFO L93 Difference]: Finished difference Result 1035 states and 1395 transitions. [2019-10-13 21:13:08,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:08,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 241 [2019-10-13 21:13:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:08,581 INFO L225 Difference]: With dead ends: 1035 [2019-10-13 21:13:08,581 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 21:13:08,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 21:13:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 21:13:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:13:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 881 transitions. [2019-10-13 21:13:08,740 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 881 transitions. Word has length 241 [2019-10-13 21:13:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:08,744 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 881 transitions. [2019-10-13 21:13:08,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:08,744 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 881 transitions. [2019-10-13 21:13:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 21:13:08,760 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:08,761 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2019-10-13 21:13:08,761 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1534104076, now seen corresponding path program 1 times [2019-10-13 21:13:08,772 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:08,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189211602] [2019-10-13 21:13:08,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:08,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:08,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:09,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189211602] [2019-10-13 21:13:09,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:09,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:09,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120040334] [2019-10-13 21:13:09,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:09,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:09,077 INFO L87 Difference]: Start difference. First operand 651 states and 881 transitions. Second operand 3 states. [2019-10-13 21:13:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:09,174 INFO L93 Difference]: Finished difference Result 1018 states and 1356 transitions. [2019-10-13 21:13:09,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:09,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2019-10-13 21:13:09,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:09,192 INFO L225 Difference]: With dead ends: 1018 [2019-10-13 21:13:09,193 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 21:13:09,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 21:13:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 653. [2019-10-13 21:13:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-10-13 21:13:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 883 transitions. [2019-10-13 21:13:09,267 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 883 transitions. Word has length 242 [2019-10-13 21:13:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:09,267 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 883 transitions. [2019-10-13 21:13:09,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 883 transitions. [2019-10-13 21:13:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-13 21:13:09,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:09,274 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:09,275 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1794718877, now seen corresponding path program 1 times [2019-10-13 21:13:09,275 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:09,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678079455] [2019-10-13 21:13:09,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:09,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:09,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:09,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678079455] [2019-10-13 21:13:09,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:09,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:09,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609581274] [2019-10-13 21:13:09,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:09,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:09,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:09,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:09,609 INFO L87 Difference]: Start difference. First operand 653 states and 883 transitions. Second operand 3 states. [2019-10-13 21:13:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:09,661 INFO L93 Difference]: Finished difference Result 1286 states and 1770 transitions. [2019-10-13 21:13:09,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:09,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2019-10-13 21:13:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:09,669 INFO L225 Difference]: With dead ends: 1286 [2019-10-13 21:13:09,669 INFO L226 Difference]: Without dead ends: 698 [2019-10-13 21:13:09,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-13 21:13:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2019-10-13 21:13:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-13 21:13:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 958 transitions. [2019-10-13 21:13:09,711 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 958 transitions. Word has length 254 [2019-10-13 21:13:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:09,712 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 958 transitions. [2019-10-13 21:13:09,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 958 transitions. [2019-10-13 21:13:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-13 21:13:09,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:09,720 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:09,720 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1323106751, now seen corresponding path program 1 times [2019-10-13 21:13:09,721 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:09,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111415750] [2019-10-13 21:13:09,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:09,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:09,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 21:13:10,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111415750] [2019-10-13 21:13:10,039 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:10,039 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:10,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708023871] [2019-10-13 21:13:10,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:10,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:10,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:10,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:10,041 INFO L87 Difference]: Start difference. First operand 697 states and 958 transitions. Second operand 3 states. [2019-10-13 21:13:10,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:10,084 INFO L93 Difference]: Finished difference Result 1415 states and 1990 transitions. [2019-10-13 21:13:10,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:10,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2019-10-13 21:13:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:10,091 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 21:13:10,091 INFO L226 Difference]: Without dead ends: 783 [2019-10-13 21:13:10,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-10-13 21:13:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 782. [2019-10-13 21:13:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2019-10-13 21:13:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1102 transitions. [2019-10-13 21:13:10,128 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1102 transitions. Word has length 255 [2019-10-13 21:13:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:10,129 INFO L462 AbstractCegarLoop]: Abstraction has 782 states and 1102 transitions. [2019-10-13 21:13:10,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1102 transitions. [2019-10-13 21:13:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-13 21:13:10,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:10,136 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:10,137 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:10,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1302871583, now seen corresponding path program 1 times [2019-10-13 21:13:10,137 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:10,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086059732] [2019-10-13 21:13:10,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:10,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:10,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:10,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086059732] [2019-10-13 21:13:10,627 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:10,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:10,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999755829] [2019-10-13 21:13:10,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:10,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:10,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:10,629 INFO L87 Difference]: Start difference. First operand 782 states and 1102 transitions. Second operand 19 states. [2019-10-13 21:13:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:16,734 INFO L93 Difference]: Finished difference Result 2650 states and 3737 transitions. [2019-10-13 21:13:16,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:16,735 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2019-10-13 21:13:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:16,751 INFO L225 Difference]: With dead ends: 2650 [2019-10-13 21:13:16,752 INFO L226 Difference]: Without dead ends: 2299 [2019-10-13 21:13:16,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-13 21:13:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2262. [2019-10-13 21:13:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-13 21:13:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3204 transitions. [2019-10-13 21:13:16,872 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3204 transitions. Word has length 258 [2019-10-13 21:13:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:16,873 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 3204 transitions. [2019-10-13 21:13:16,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3204 transitions. [2019-10-13 21:13:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-13 21:13:16,884 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:16,884 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:16,885 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:16,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:16,885 INFO L82 PathProgramCache]: Analyzing trace with hash -150304222, now seen corresponding path program 1 times [2019-10-13 21:13:16,885 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:16,886 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554490859] [2019-10-13 21:13:16,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:16,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:16,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:17,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554490859] [2019-10-13 21:13:17,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:17,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:13:17,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736857378] [2019-10-13 21:13:17,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:13:17,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:13:17,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:13:17,344 INFO L87 Difference]: Start difference. First operand 2262 states and 3204 transitions. Second operand 18 states. [2019-10-13 21:13:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:17,918 INFO L93 Difference]: Finished difference Result 3915 states and 5505 transitions. [2019-10-13 21:13:17,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:13:17,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 259 [2019-10-13 21:13:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:17,935 INFO L225 Difference]: With dead ends: 3915 [2019-10-13 21:13:17,935 INFO L226 Difference]: Without dead ends: 2444 [2019-10-13 21:13:17,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:13:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2019-10-13 21:13:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2444. [2019-10-13 21:13:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2444 states. [2019-10-13 21:13:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3473 transitions. [2019-10-13 21:13:18,073 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3473 transitions. Word has length 259 [2019-10-13 21:13:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:18,074 INFO L462 AbstractCegarLoop]: Abstraction has 2444 states and 3473 transitions. [2019-10-13 21:13:18,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:13:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3473 transitions. [2019-10-13 21:13:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-13 21:13:18,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:18,086 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:18,087 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1524612594, now seen corresponding path program 1 times [2019-10-13 21:13:18,088 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:18,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761552448] [2019-10-13 21:13:18,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:18,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:18,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 21:13:18,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761552448] [2019-10-13 21:13:18,592 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:18,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:18,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042163669] [2019-10-13 21:13:18,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:18,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:18,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:18,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:18,596 INFO L87 Difference]: Start difference. First operand 2444 states and 3473 transitions. Second operand 15 states. [2019-10-13 21:13:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:23,353 INFO L93 Difference]: Finished difference Result 4117 states and 5799 transitions. [2019-10-13 21:13:23,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:23,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 259 [2019-10-13 21:13:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:23,371 INFO L225 Difference]: With dead ends: 4117 [2019-10-13 21:13:23,372 INFO L226 Difference]: Without dead ends: 2544 [2019-10-13 21:13:23,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2019-10-13 21:13:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2514. [2019-10-13 21:13:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-10-13 21:13:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3589 transitions. [2019-10-13 21:13:23,490 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3589 transitions. Word has length 259 [2019-10-13 21:13:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:23,491 INFO L462 AbstractCegarLoop]: Abstraction has 2514 states and 3589 transitions. [2019-10-13 21:13:23,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3589 transitions. [2019-10-13 21:13:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-13 21:13:23,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:23,503 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:23,503 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash 500619753, now seen corresponding path program 1 times [2019-10-13 21:13:23,504 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:23,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333437215] [2019-10-13 21:13:23,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:23,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:23,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 21:13:23,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333437215] [2019-10-13 21:13:23,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:23,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:23,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95581223] [2019-10-13 21:13:23,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:23,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:23,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:23,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:23,706 INFO L87 Difference]: Start difference. First operand 2514 states and 3589 transitions. Second operand 5 states. [2019-10-13 21:13:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:25,517 INFO L93 Difference]: Finished difference Result 6250 states and 8975 transitions. [2019-10-13 21:13:25,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:25,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2019-10-13 21:13:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:25,555 INFO L225 Difference]: With dead ends: 6250 [2019-10-13 21:13:25,556 INFO L226 Difference]: Without dead ends: 5415 [2019-10-13 21:13:25,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:13:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2019-10-13 21:13:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5397. [2019-10-13 21:13:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5397 states. [2019-10-13 21:13:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 7750 transitions. [2019-10-13 21:13:25,864 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 7750 transitions. Word has length 259 [2019-10-13 21:13:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:25,864 INFO L462 AbstractCegarLoop]: Abstraction has 5397 states and 7750 transitions. [2019-10-13 21:13:25,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 7750 transitions. [2019-10-13 21:13:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-10-13 21:13:25,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:25,883 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:25,883 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:25,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1958504696, now seen corresponding path program 1 times [2019-10-13 21:13:25,884 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:25,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12983932] [2019-10-13 21:13:25,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:25,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:25,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:26,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12983932] [2019-10-13 21:13:26,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728183472] [2019-10-13 21:13:26,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:26,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 3344 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:13:26,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:13:27,237 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:13:27,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:13:27,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:27,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:27,985 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:13:27,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:13:27,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620152786] [2019-10-13 21:13:27,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:13:27,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:27,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:13:27,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:13:27,988 INFO L87 Difference]: Start difference. First operand 5397 states and 7750 transitions. Second operand 9 states. [2019-10-13 21:13:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:30,117 INFO L93 Difference]: Finished difference Result 10772 states and 15480 transitions. [2019-10-13 21:13:30,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:13:30,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 259 [2019-10-13 21:13:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:30,153 INFO L225 Difference]: With dead ends: 10772 [2019-10-13 21:13:30,153 INFO L226 Difference]: Without dead ends: 5411 [2019-10-13 21:13:30,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 512 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:13:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2019-10-13 21:13:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5411. [2019-10-13 21:13:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5411 states. [2019-10-13 21:13:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 7768 transitions. [2019-10-13 21:13:30,493 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 7768 transitions. Word has length 259 [2019-10-13 21:13:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:30,494 INFO L462 AbstractCegarLoop]: Abstraction has 5411 states and 7768 transitions. [2019-10-13 21:13:30,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:13:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 7768 transitions. [2019-10-13 21:13:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-13 21:13:30,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:30,515 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:30,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:30,725 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:30,725 INFO L82 PathProgramCache]: Analyzing trace with hash -639530006, now seen corresponding path program 1 times [2019-10-13 21:13:30,726 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:30,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142248676] [2019-10-13 21:13:30,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:30,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:30,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:31,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142248676] [2019-10-13 21:13:31,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595134034] [2019-10-13 21:13:31,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:32,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:13:32,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:13:32,136 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:13:32,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:32,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:13:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:32,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:13:32,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:13:32,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745034546] [2019-10-13 21:13:32,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:13:32,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:32,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:13:32,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:13:32,574 INFO L87 Difference]: Start difference. First operand 5411 states and 7768 transitions. Second operand 7 states. [2019-10-13 21:13:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:34,410 INFO L93 Difference]: Finished difference Result 10777 states and 15500 transitions. [2019-10-13 21:13:34,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:34,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2019-10-13 21:13:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:34,446 INFO L225 Difference]: With dead ends: 10777 [2019-10-13 21:13:34,446 INFO L226 Difference]: Without dead ends: 5417 [2019-10-13 21:13:34,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 519 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:13:34,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2019-10-13 21:13:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5417. [2019-10-13 21:13:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5417 states. [2019-10-13 21:13:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 7775 transitions. [2019-10-13 21:13:34,728 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 7775 transitions. Word has length 260 [2019-10-13 21:13:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:34,730 INFO L462 AbstractCegarLoop]: Abstraction has 5417 states and 7775 transitions. [2019-10-13 21:13:34,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:13:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 7775 transitions. [2019-10-13 21:13:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2019-10-13 21:13:34,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:34,751 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:34,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:34,961 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:34,962 INFO L82 PathProgramCache]: Analyzing trace with hash -607788624, now seen corresponding path program 1 times [2019-10-13 21:13:34,962 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:34,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134799090] [2019-10-13 21:13:34,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:34,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:34,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:35,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134799090] [2019-10-13 21:13:35,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161100282] [2019-10-13 21:13:35,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:36,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:13:36,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:13:36,218 INFO L321 TraceCheckSpWp]: Computing backward predicates...