/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:26,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:26,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:26,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:26,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:26,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:26,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:26,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:26,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:26,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:26,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:26,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:26,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:26,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:26,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:26,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:26,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:26,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:26,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:26,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:26,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:26,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:26,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:26,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:26,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:26,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:26,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:26,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:26,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:26,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:26,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:26,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:26,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:26,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:26,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:26,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:26,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:26,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:26,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:26,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:26,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:26,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:52:26,224 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:26,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:26,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:26,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:26,227 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:26,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:26,227 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:26,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:26,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:26,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:26,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:26,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:26,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:26,228 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:26,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:26,229 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:26,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:26,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:26,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:26,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:26,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:26,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:26,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:26,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:26,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:26,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:26,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:26,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:26,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:52:26,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:26,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:26,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:26,527 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:26,527 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:26,528 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2019-11-07 00:52:26,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffb557b3/395c55a77f4643b1891e2ae2f6fe6d83/FLAG71b50f33d [2019-11-07 00:52:27,344 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:27,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2019-11-07 00:52:27,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffb557b3/395c55a77f4643b1891e2ae2f6fe6d83/FLAG71b50f33d [2019-11-07 00:52:27,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffb557b3/395c55a77f4643b1891e2ae2f6fe6d83 [2019-11-07 00:52:27,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:27,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:27,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:27,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:27,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:27,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:27" (1/1) ... [2019-11-07 00:52:27,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245ee514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:27, skipping insertion in model container [2019-11-07 00:52:27,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:27" (1/1) ... [2019-11-07 00:52:27,576 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:27,736 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:29,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:29,347 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:29,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:29,608 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:29,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29 WrapperNode [2019-11-07 00:52:29,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:29,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:29,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:29,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:29,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... [2019-11-07 00:52:29,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:29,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:29,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:29,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:29,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:29,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:29,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:29,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:29,892 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:29,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:29,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:29,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:29,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:29,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:29,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:52:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:52:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:52:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:52:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:52:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:52:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:31,915 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:31,916 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:31,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:31 BoogieIcfgContainer [2019-11-07 00:52:31,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:31,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:31,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:31,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:31,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:27" (1/3) ... [2019-11-07 00:52:31,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e54020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:31, skipping insertion in model container [2019-11-07 00:52:31,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:29" (2/3) ... [2019-11-07 00:52:31,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e54020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:31, skipping insertion in model container [2019-11-07 00:52:31,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:31" (3/3) ... [2019-11-07 00:52:31,927 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product31.cil.c [2019-11-07 00:52:31,939 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:31,950 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:31,963 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:32,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:32,003 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:32,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:32,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:32,008 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:32,008 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:32,008 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:32,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-11-07 00:52:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:52:32,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:32,095 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:32,099 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:32,105 INFO L82 PathProgramCache]: Analyzing trace with hash -908593919, now seen corresponding path program 1 times [2019-11-07 00:52:32,115 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:32,116 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289859538] [2019-11-07 00:52:32,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:32,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289859538] [2019-11-07 00:52:32,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:32,758 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:32,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802456741] [2019-11-07 00:52:32,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:32,766 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:32,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:32,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:32,783 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-11-07 00:52:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:32,868 INFO L93 Difference]: Finished difference Result 858 states and 1126 transitions. [2019-11-07 00:52:32,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:32,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-11-07 00:52:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:32,907 INFO L225 Difference]: With dead ends: 858 [2019-11-07 00:52:32,908 INFO L226 Difference]: Without dead ends: 535 [2019-11-07 00:52:32,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2019-11-07 00:52:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2019-11-07 00:52:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2019-11-07 00:52:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 707 transitions. [2019-11-07 00:52:33,012 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 707 transitions. Word has length 164 [2019-11-07 00:52:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:33,014 INFO L462 AbstractCegarLoop]: Abstraction has 535 states and 707 transitions. [2019-11-07 00:52:33,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 707 transitions. [2019-11-07 00:52:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:52:33,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:33,020 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:33,021 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash 644714031, now seen corresponding path program 1 times [2019-11-07 00:52:33,021 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:33,021 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362617679] [2019-11-07 00:52:33,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:33,341 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362617679] [2019-11-07 00:52:33,341 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:33,341 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:33,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56777409] [2019-11-07 00:52:33,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:33,348 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:33,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:33,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:33,349 INFO L87 Difference]: Start difference. First operand 535 states and 707 transitions. Second operand 3 states. [2019-11-07 00:52:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:33,432 INFO L93 Difference]: Finished difference Result 841 states and 1094 transitions. [2019-11-07 00:52:33,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:33,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-07 00:52:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:33,440 INFO L225 Difference]: With dead ends: 841 [2019-11-07 00:52:33,440 INFO L226 Difference]: Without dead ends: 538 [2019-11-07 00:52:33,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-07 00:52:33,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 537. [2019-11-07 00:52:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-11-07 00:52:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 709 transitions. [2019-11-07 00:52:33,503 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 709 transitions. Word has length 165 [2019-11-07 00:52:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:33,504 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 709 transitions. [2019-11-07 00:52:33,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 709 transitions. [2019-11-07 00:52:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:52:33,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:33,508 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:33,508 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:33,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:33,509 INFO L82 PathProgramCache]: Analyzing trace with hash -826054429, now seen corresponding path program 1 times [2019-11-07 00:52:33,509 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:33,509 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567282545] [2019-11-07 00:52:33,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:33,724 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567282545] [2019-11-07 00:52:33,724 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:33,724 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:33,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259405445] [2019-11-07 00:52:33,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:33,726 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:33,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:33,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:33,726 INFO L87 Difference]: Start difference. First operand 537 states and 709 transitions. Second operand 3 states. [2019-11-07 00:52:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:33,789 INFO L93 Difference]: Finished difference Result 1050 states and 1416 transitions. [2019-11-07 00:52:33,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:33,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 00:52:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:33,794 INFO L225 Difference]: With dead ends: 1050 [2019-11-07 00:52:33,795 INFO L226 Difference]: Without dead ends: 578 [2019-11-07 00:52:33,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2019-11-07 00:52:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 577. [2019-11-07 00:52:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-11-07 00:52:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 778 transitions. [2019-11-07 00:52:33,825 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 778 transitions. Word has length 171 [2019-11-07 00:52:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:33,825 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 778 transitions. [2019-11-07 00:52:33,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 778 transitions. [2019-11-07 00:52:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-07 00:52:33,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:33,830 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:33,830 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash -290621353, now seen corresponding path program 1 times [2019-11-07 00:52:33,831 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:33,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361316611] [2019-11-07 00:52:33,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:34,114 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361316611] [2019-11-07 00:52:34,114 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:34,114 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:34,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359138212] [2019-11-07 00:52:34,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:34,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:34,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:34,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:34,118 INFO L87 Difference]: Start difference. First operand 577 states and 778 transitions. Second operand 7 states. [2019-11-07 00:52:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:37,482 INFO L93 Difference]: Finished difference Result 1175 states and 1544 transitions. [2019-11-07 00:52:37,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:37,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2019-11-07 00:52:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:37,489 INFO L225 Difference]: With dead ends: 1175 [2019-11-07 00:52:37,489 INFO L226 Difference]: Without dead ends: 883 [2019-11-07 00:52:37,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-11-07 00:52:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 874. [2019-11-07 00:52:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-11-07 00:52:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1159 transitions. [2019-11-07 00:52:37,556 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1159 transitions. Word has length 172 [2019-11-07 00:52:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:37,557 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1159 transitions. [2019-11-07 00:52:37,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1159 transitions. [2019-11-07 00:52:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:37,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:37,560 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:37,561 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:37,561 INFO L82 PathProgramCache]: Analyzing trace with hash 598384953, now seen corresponding path program 1 times [2019-11-07 00:52:37,561 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:37,562 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092218576] [2019-11-07 00:52:37,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:37,925 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092218576] [2019-11-07 00:52:37,925 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:37,925 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:52:37,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396445293] [2019-11-07 00:52:37,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:52:37,926 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:37,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:52:37,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:37,928 INFO L87 Difference]: Start difference. First operand 874 states and 1159 transitions. Second operand 18 states. [2019-11-07 00:52:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:38,409 INFO L93 Difference]: Finished difference Result 1541 states and 2026 transitions. [2019-11-07 00:52:38,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:52:38,410 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 173 [2019-11-07 00:52:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:38,422 INFO L225 Difference]: With dead ends: 1541 [2019-11-07 00:52:38,422 INFO L226 Difference]: Without dead ends: 924 [2019-11-07 00:52:38,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2019-11-07 00:52:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2019-11-07 00:52:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2019-11-07 00:52:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1224 transitions. [2019-11-07 00:52:38,490 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1224 transitions. Word has length 173 [2019-11-07 00:52:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:38,492 INFO L462 AbstractCegarLoop]: Abstraction has 920 states and 1224 transitions. [2019-11-07 00:52:38,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:52:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1224 transitions. [2019-11-07 00:52:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:52:38,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:38,496 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:38,496 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash 747428244, now seen corresponding path program 1 times [2019-11-07 00:52:38,497 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:38,497 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119988465] [2019-11-07 00:52:38,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:38,731 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119988465] [2019-11-07 00:52:38,732 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:38,732 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:38,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590963421] [2019-11-07 00:52:38,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:38,734 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:38,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:38,735 INFO L87 Difference]: Start difference. First operand 920 states and 1224 transitions. Second operand 8 states. [2019-11-07 00:52:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:39,769 INFO L93 Difference]: Finished difference Result 1747 states and 2309 transitions. [2019-11-07 00:52:39,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:39,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-11-07 00:52:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:39,781 INFO L225 Difference]: With dead ends: 1747 [2019-11-07 00:52:39,782 INFO L226 Difference]: Without dead ends: 1588 [2019-11-07 00:52:39,784 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2019-11-07 00:52:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1575. [2019-11-07 00:52:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2019-11-07 00:52:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2083 transitions. [2019-11-07 00:52:39,864 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2083 transitions. Word has length 182 [2019-11-07 00:52:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:39,865 INFO L462 AbstractCegarLoop]: Abstraction has 1575 states and 2083 transitions. [2019-11-07 00:52:39,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2083 transitions. [2019-11-07 00:52:39,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 00:52:39,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:39,870 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:39,870 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:39,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:39,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1282001460, now seen corresponding path program 1 times [2019-11-07 00:52:39,870 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:39,871 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214786451] [2019-11-07 00:52:39,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:40,197 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214786451] [2019-11-07 00:52:40,197 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:40,198 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-11-07 00:52:40,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635773414] [2019-11-07 00:52:40,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 00:52:40,199 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 00:52:40,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:52:40,200 INFO L87 Difference]: Start difference. First operand 1575 states and 2083 transitions. Second operand 17 states. [2019-11-07 00:52:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,155 INFO L93 Difference]: Finished difference Result 2182 states and 2860 transitions. [2019-11-07 00:52:41,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:52:41,156 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2019-11-07 00:52:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,166 INFO L225 Difference]: With dead ends: 2182 [2019-11-07 00:52:41,166 INFO L226 Difference]: Without dead ends: 1574 [2019-11-07 00:52:41,169 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:52:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2019-11-07 00:52:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1573. [2019-11-07 00:52:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2019-11-07 00:52:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2078 transitions. [2019-11-07 00:52:41,254 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2078 transitions. Word has length 183 [2019-11-07 00:52:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:41,257 INFO L462 AbstractCegarLoop]: Abstraction has 1573 states and 2078 transitions. [2019-11-07 00:52:41,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 00:52:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2078 transitions. [2019-11-07 00:52:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 00:52:41,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:41,262 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:41,262 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash -287789140, now seen corresponding path program 2 times [2019-11-07 00:52:41,263 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:41,263 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381341291] [2019-11-07 00:52:41,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:41,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381341291] [2019-11-07 00:52:41,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267417320] [2019-11-07 00:52:41,470 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:41,945 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:41,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:41,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:41,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:42,258 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:42,745 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:42,745 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:42,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033022081] [2019-11-07 00:52:42,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:42,748 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:42,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:42,749 INFO L87 Difference]: Start difference. First operand 1573 states and 2078 transitions. Second operand 14 states. [2019-11-07 00:52:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:45,531 INFO L93 Difference]: Finished difference Result 4671 states and 6209 transitions. [2019-11-07 00:52:45,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:45,531 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2019-11-07 00:52:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:45,560 INFO L225 Difference]: With dead ends: 4671 [2019-11-07 00:52:45,560 INFO L226 Difference]: Without dead ends: 4664 [2019-11-07 00:52:45,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2019-11-07 00:52:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3351. [2019-11-07 00:52:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2019-11-07 00:52:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4504 transitions. [2019-11-07 00:52:45,854 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4504 transitions. Word has length 183 [2019-11-07 00:52:45,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:45,855 INFO L462 AbstractCegarLoop]: Abstraction has 3351 states and 4504 transitions. [2019-11-07 00:52:45,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4504 transitions. [2019-11-07 00:52:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:52:45,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:45,867 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:46,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:46,082 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1144758085, now seen corresponding path program 1 times [2019-11-07 00:52:46,083 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:46,083 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53372715] [2019-11-07 00:52:46,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:46,292 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53372715] [2019-11-07 00:52:46,292 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968467284] [2019-11-07 00:52:46,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:46,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:46,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:47,009 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:47,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:47,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:47,354 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:47,354 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:52:47,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197274227] [2019-11-07 00:52:47,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:47,355 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:47,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:47,356 INFO L87 Difference]: Start difference. First operand 3351 states and 4504 transitions. Second operand 7 states. [2019-11-07 00:52:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:48,963 INFO L93 Difference]: Finished difference Result 6675 states and 8979 transitions. [2019-11-07 00:52:48,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:52:48,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2019-11-07 00:52:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:48,985 INFO L225 Difference]: With dead ends: 6675 [2019-11-07 00:52:48,985 INFO L226 Difference]: Without dead ends: 3363 [2019-11-07 00:52:48,997 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:49,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2019-11-07 00:52:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3353. [2019-11-07 00:52:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3353 states. [2019-11-07 00:52:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4507 transitions. [2019-11-07 00:52:49,194 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4507 transitions. Word has length 186 [2019-11-07 00:52:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:49,195 INFO L462 AbstractCegarLoop]: Abstraction has 3353 states and 4507 transitions. [2019-11-07 00:52:49,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4507 transitions. [2019-11-07 00:52:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:52:49,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:49,203 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:49,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:49,423 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:49,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:49,424 INFO L82 PathProgramCache]: Analyzing trace with hash -784397757, now seen corresponding path program 1 times [2019-11-07 00:52:49,424 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:49,424 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098312841] [2019-11-07 00:52:49,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:49,574 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098312841] [2019-11-07 00:52:49,575 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235926749] [2019-11-07 00:52:49,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:50,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:50,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:52:50,331 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:50,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:50,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:50,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:50,868 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:50,868 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:52:50,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425459213] [2019-11-07 00:52:50,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:50,869 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:50,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:50,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:50,870 INFO L87 Difference]: Start difference. First operand 3353 states and 4507 transitions. Second operand 9 states. [2019-11-07 00:52:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:52,527 INFO L93 Difference]: Finished difference Result 6682 states and 8989 transitions. [2019-11-07 00:52:52,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:52,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-11-07 00:52:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:52,547 INFO L225 Difference]: With dead ends: 6682 [2019-11-07 00:52:52,547 INFO L226 Difference]: Without dead ends: 3371 [2019-11-07 00:52:52,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2019-11-07 00:52:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3369. [2019-11-07 00:52:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3369 states. [2019-11-07 00:52:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4523 transitions. [2019-11-07 00:52:52,735 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4523 transitions. Word has length 187 [2019-11-07 00:52:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:52,736 INFO L462 AbstractCegarLoop]: Abstraction has 3369 states and 4523 transitions. [2019-11-07 00:52:52,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4523 transitions. [2019-11-07 00:52:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:52:52,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:52,746 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:52,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:52,963 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:52,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1354189646, now seen corresponding path program 1 times [2019-11-07 00:52:52,964 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:52,964 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926073228] [2019-11-07 00:52:52,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:53,147 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926073228] [2019-11-07 00:52:53,147 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346772728] [2019-11-07 00:52:53,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:53,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:53,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:53,885 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:54,287 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-07 00:52:54,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:54,463 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:54,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:54,664 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:54,664 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:52:54,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449095371] [2019-11-07 00:52:54,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:54,665 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:54,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:54,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:52:54,666 INFO L87 Difference]: Start difference. First operand 3369 states and 4523 transitions. Second operand 16 states. [2019-11-07 00:52:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:56,515 INFO L93 Difference]: Finished difference Result 6674 states and 8970 transitions. [2019-11-07 00:52:56,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:56,516 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-11-07 00:52:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:56,537 INFO L225 Difference]: With dead ends: 6674 [2019-11-07 00:52:56,537 INFO L226 Difference]: Without dead ends: 3393 [2019-11-07 00:52:56,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 360 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2019-11-07 00:52:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3391. [2019-11-07 00:52:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3391 states. [2019-11-07 00:52:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4548 transitions. [2019-11-07 00:52:56,814 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4548 transitions. Word has length 188 [2019-11-07 00:52:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:56,814 INFO L462 AbstractCegarLoop]: Abstraction has 3391 states and 4548 transitions. [2019-11-07 00:52:56,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4548 transitions. [2019-11-07 00:52:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:52:56,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:56,830 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:57,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:57,041 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:57,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1965861263, now seen corresponding path program 2 times [2019-11-07 00:52:57,042 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:57,042 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690193338] [2019-11-07 00:52:57,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:57,452 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690193338] [2019-11-07 00:52:57,452 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949795100] [2019-11-07 00:52:57,453 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:58,178 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:52:58,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:58,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:58,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:58,289 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:58,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:58,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:58,656 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:58,656 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 00:52:58,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675252514] [2019-11-07 00:52:58,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:52:58,660 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:52:58,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:58,661 INFO L87 Difference]: Start difference. First operand 3391 states and 4548 transitions. Second operand 11 states.