/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_spec6_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:53:23,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:53:23,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:53:23,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:53:23,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:53:23,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:53:23,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:53:23,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:53:23,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:53:23,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:53:23,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:53:23,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:53:23,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:53:23,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:53:23,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:53:23,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:53:23,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:53:23,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:53:23,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:53:23,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:53:23,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:53:23,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:53:23,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:53:23,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:53:23,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:53:23,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:53:23,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:53:23,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:53:23,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:53:23,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:53:23,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:53:23,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:53:23,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:53:23,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:53:23,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:53:23,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:53:23,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:53:23,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:53:23,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:53:23,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:53:23,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:53:23,172 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 00:53:23,192 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:53:23,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:53:23,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:53:23,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:53:23,194 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:53:23,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:53:23,194 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:53:23,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:53:23,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:53:23,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:53:23,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:53:23,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:53:23,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:53:23,195 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:53:23,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:53:23,196 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:53:23,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:53:23,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:53:23,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:53:23,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:53:23,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:53:23,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:53:23,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:53:23,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:53:23,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:53:23,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:53:23,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:53:23,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:53:23,198 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 00:53:23,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:53:23,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:53:23,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:53:23,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:53:23,507 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:53:23,508 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product20.cil.c [2019-11-07 00:53:23,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c312a12b4/b5c327677956405ba737d130d9bd0d95/FLAG0a261c3e1 [2019-11-07 00:53:24,177 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:53:24,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product20.cil.c [2019-11-07 00:53:24,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c312a12b4/b5c327677956405ba737d130d9bd0d95/FLAG0a261c3e1 [2019-11-07 00:53:24,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c312a12b4/b5c327677956405ba737d130d9bd0d95 [2019-11-07 00:53:24,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:53:24,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:53:24,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:53:24,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:53:24,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:53:24,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:24" (1/1) ... [2019-11-07 00:53:24,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee57cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:24, skipping insertion in model container [2019-11-07 00:53:24,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:24" (1/1) ... [2019-11-07 00:53:24,413 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:53:24,507 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:53:25,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:53:25,156 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:53:25,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:53:25,386 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:53:25,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25 WrapperNode [2019-11-07 00:53:25,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:53:25,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:53:25,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:53:25,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:53:25,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (1/1) ... [2019-11-07 00:53:25,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:53:25,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:53:25,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:53:25,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:53:25,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (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 00:53:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:53:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:53:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:53:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:53:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:53:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:53:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:53:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:53:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:53:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:53:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:53:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:53:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:53:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:53:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:53:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:53:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:53:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:53:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:53:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:53:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:53:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:53:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:53:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:53:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:53:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:53:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:53:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:53:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:53:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:53:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:53:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:53:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:53:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:53:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:53:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:53:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:53:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:53:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:53:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:53:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:53:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:53:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:53:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:53:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:53:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:53:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:53:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:53:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:53:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:53:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:53:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:53:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:53:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:53:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:53:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:53:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:53:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:53:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:53:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:53:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:53:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:53:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:53:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:53:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-11-07 00:53:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-11-07 00:53:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:53:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:53:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:53:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:53:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:53:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:53:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:53:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:53:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:53:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:53:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:53:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:53:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:53:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:53:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:53:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:53:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:53:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:53:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:53:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:53:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:53:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:53:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:53:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:53:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:53:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:53:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:53:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:53:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:53:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:53:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:53:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:53:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:53:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:53:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:53:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:53:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:53:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:53:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:53:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:53:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:53:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:53:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:53:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:53:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:53:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:53:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:53:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:53:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:53:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:53:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:53:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:53:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:53:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:53:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:53:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:53:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:53:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:53:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:53:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:53:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:53:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:53:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:53:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:53:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:53:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:53:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:53:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:53:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:53:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:53:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:53:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:53:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:53:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:53:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:53:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:53:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:53:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:53:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:53:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:53:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:53:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:53:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:53:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:53:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:53:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:53:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:53:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:53:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:53:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:53:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:53:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:53:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:53:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:53:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:53:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:53:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-11-07 00:53:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-11-07 00:53:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:53:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:53:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:53:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:53:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:53:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:53:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:53:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:53:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:53:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:53:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:53:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:53:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:53:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:53:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:53:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:53:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:53:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:53:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:53:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:53:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:53:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:53:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:53:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:53:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:53:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:53:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:53:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:53:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:53:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:53:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:53:28,052 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:53:28,053 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:53:28,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:28 BoogieIcfgContainer [2019-11-07 00:53:28,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:53:28,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:53:28,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:53:28,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:53:28,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:24" (1/3) ... [2019-11-07 00:53:28,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e9b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:28, skipping insertion in model container [2019-11-07 00:53:28,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25" (2/3) ... [2019-11-07 00:53:28,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e9b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:28, skipping insertion in model container [2019-11-07 00:53:28,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:28" (3/3) ... [2019-11-07 00:53:28,065 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product20.cil.c [2019-11-07 00:53:28,076 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:53:28,090 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:53:28,102 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:53:28,156 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:53:28,156 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:53:28,156 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:53:28,156 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:53:28,156 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:53:28,156 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:53:28,157 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:53:28,157 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:53:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-11-07 00:53:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-07 00:53:28,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:28,242 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, 1, 1] [2019-11-07 00:53:28,247 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:28,255 INFO L82 PathProgramCache]: Analyzing trace with hash 493567878, now seen corresponding path program 1 times [2019-11-07 00:53:28,274 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:28,275 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427818049] [2019-11-07 00:53:28,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:29,033 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 00:53:29,034 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427818049] [2019-11-07 00:53:29,034 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:29,035 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:53:29,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016948889] [2019-11-07 00:53:29,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:53:29,045 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:29,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:53:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:53:29,062 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 2 states. [2019-11-07 00:53:29,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:29,160 INFO L93 Difference]: Finished difference Result 772 states and 1057 transitions. [2019-11-07 00:53:29,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:53:29,162 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 185 [2019-11-07 00:53:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:29,191 INFO L225 Difference]: With dead ends: 772 [2019-11-07 00:53:29,192 INFO L226 Difference]: Without dead ends: 514 [2019-11-07 00:53:29,199 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 00:53:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-11-07 00:53:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2019-11-07 00:53:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2019-11-07 00:53:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 707 transitions. [2019-11-07 00:53:29,301 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 707 transitions. Word has length 185 [2019-11-07 00:53:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:29,303 INFO L462 AbstractCegarLoop]: Abstraction has 514 states and 707 transitions. [2019-11-07 00:53:29,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:53:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 707 transitions. [2019-11-07 00:53:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:53:29,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:29,310 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, 1, 1, 1] [2019-11-07 00:53:29,310 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:29,311 INFO L82 PathProgramCache]: Analyzing trace with hash 532061428, now seen corresponding path program 1 times [2019-11-07 00:53:29,311 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:29,311 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399781145] [2019-11-07 00:53:29,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:29,571 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 00:53:29,572 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399781145] [2019-11-07 00:53:29,572 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:29,572 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:29,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357210004] [2019-11-07 00:53:29,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:29,577 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:29,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:29,579 INFO L87 Difference]: Start difference. First operand 514 states and 707 transitions. Second operand 3 states. [2019-11-07 00:53:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:29,648 INFO L93 Difference]: Finished difference Result 755 states and 1022 transitions. [2019-11-07 00:53:29,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:29,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-11-07 00:53:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:29,655 INFO L225 Difference]: With dead ends: 755 [2019-11-07 00:53:29,656 INFO L226 Difference]: Without dead ends: 517 [2019-11-07 00:53:29,659 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 00:53:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2019-11-07 00:53:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2019-11-07 00:53:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2019-11-07 00:53:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 709 transitions. [2019-11-07 00:53:29,708 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 709 transitions. Word has length 186 [2019-11-07 00:53:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:29,709 INFO L462 AbstractCegarLoop]: Abstraction has 516 states and 709 transitions. [2019-11-07 00:53:29,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 709 transitions. [2019-11-07 00:53:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:53:29,713 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:29,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:29,714 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:29,714 INFO L82 PathProgramCache]: Analyzing trace with hash -347325980, now seen corresponding path program 1 times [2019-11-07 00:53:29,715 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:29,715 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231158571] [2019-11-07 00:53:29,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:29,947 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 00:53:29,948 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231158571] [2019-11-07 00:53:29,948 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:29,948 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:29,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763979264] [2019-11-07 00:53:29,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:29,950 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:29,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:29,950 INFO L87 Difference]: Start difference. First operand 516 states and 709 transitions. Second operand 3 states. [2019-11-07 00:53:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:29,989 INFO L93 Difference]: Finished difference Result 1010 states and 1419 transitions. [2019-11-07 00:53:29,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:29,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-11-07 00:53:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:29,996 INFO L225 Difference]: With dead ends: 1010 [2019-11-07 00:53:29,996 INFO L226 Difference]: Without dead ends: 559 [2019-11-07 00:53:30,000 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 00:53:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2019-11-07 00:53:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 558. [2019-11-07 00:53:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-11-07 00:53:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 781 transitions. [2019-11-07 00:53:30,036 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 781 transitions. Word has length 196 [2019-11-07 00:53:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:30,037 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 781 transitions. [2019-11-07 00:53:30,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 781 transitions. [2019-11-07 00:53:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:53:30,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:30,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:30,043 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash -326965868, now seen corresponding path program 1 times [2019-11-07 00:53:30,044 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:30,045 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513455174] [2019-11-07 00:53:30,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:30,348 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 00:53:30,349 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513455174] [2019-11-07 00:53:30,349 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:30,350 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:30,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302580367] [2019-11-07 00:53:30,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:30,360 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:30,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:30,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:30,361 INFO L87 Difference]: Start difference. First operand 558 states and 781 transitions. Second operand 3 states. [2019-11-07 00:53:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:30,418 INFO L93 Difference]: Finished difference Result 1133 states and 1630 transitions. [2019-11-07 00:53:30,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:30,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-11-07 00:53:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:30,429 INFO L225 Difference]: With dead ends: 1133 [2019-11-07 00:53:30,429 INFO L226 Difference]: Without dead ends: 640 [2019-11-07 00:53:30,432 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 00:53:30,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2019-11-07 00:53:30,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 639. [2019-11-07 00:53:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-11-07 00:53:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 919 transitions. [2019-11-07 00:53:30,477 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 919 transitions. Word has length 197 [2019-11-07 00:53:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:30,478 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 919 transitions. [2019-11-07 00:53:30,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 919 transitions. [2019-11-07 00:53:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:53:30,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:30,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:30,483 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash 175812164, now seen corresponding path program 1 times [2019-11-07 00:53:30,484 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:30,485 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783246974] [2019-11-07 00:53:30,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:30,682 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 00:53:30,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783246974] [2019-11-07 00:53:30,683 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:30,683 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:30,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144131255] [2019-11-07 00:53:30,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:30,684 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:30,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:30,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:30,685 INFO L87 Difference]: Start difference. First operand 639 states and 919 transitions. Second operand 3 states. [2019-11-07 00:53:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:30,728 INFO L93 Difference]: Finished difference Result 1370 states and 2034 transitions. [2019-11-07 00:53:30,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:30,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2019-11-07 00:53:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:30,736 INFO L225 Difference]: With dead ends: 1370 [2019-11-07 00:53:30,736 INFO L226 Difference]: Without dead ends: 796 [2019-11-07 00:53:30,738 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 00:53:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2019-11-07 00:53:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 795. [2019-11-07 00:53:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-11-07 00:53:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1183 transitions. [2019-11-07 00:53:30,782 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1183 transitions. Word has length 198 [2019-11-07 00:53:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:30,783 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 1183 transitions. [2019-11-07 00:53:30,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1183 transitions. [2019-11-07 00:53:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 00:53:30,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:30,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:30,790 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:30,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:30,790 INFO L82 PathProgramCache]: Analyzing trace with hash 517583156, now seen corresponding path program 1 times [2019-11-07 00:53:30,790 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:30,791 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861715171] [2019-11-07 00:53:30,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:31,015 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 00:53:31,015 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861715171] [2019-11-07 00:53:31,015 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:31,016 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:31,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439047516] [2019-11-07 00:53:31,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:31,017 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:31,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:31,018 INFO L87 Difference]: Start difference. First operand 795 states and 1183 transitions. Second operand 3 states. [2019-11-07 00:53:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:31,089 INFO L93 Difference]: Finished difference Result 1826 states and 2806 transitions. [2019-11-07 00:53:31,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:31,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-11-07 00:53:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:31,100 INFO L225 Difference]: With dead ends: 1826 [2019-11-07 00:53:31,101 INFO L226 Difference]: Without dead ends: 1096 [2019-11-07 00:53:31,105 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 00:53:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2019-11-07 00:53:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1095. [2019-11-07 00:53:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2019-11-07 00:53:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1687 transitions. [2019-11-07 00:53:31,172 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1687 transitions. Word has length 199 [2019-11-07 00:53:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:31,174 INFO L462 AbstractCegarLoop]: Abstraction has 1095 states and 1687 transitions. [2019-11-07 00:53:31,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1687 transitions. [2019-11-07 00:53:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-11-07 00:53:31,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:31,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:31,185 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2061438023, now seen corresponding path program 1 times [2019-11-07 00:53:31,186 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:31,187 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930559592] [2019-11-07 00:53:31,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:31,547 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 00:53:31,547 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930559592] [2019-11-07 00:53:31,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:31,548 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:53:31,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712837935] [2019-11-07 00:53:31,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:53:31,549 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:31,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:53:31,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:53:31,550 INFO L87 Difference]: Start difference. First operand 1095 states and 1687 transitions. Second operand 11 states. [2019-11-07 00:53:36,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:36,619 INFO L93 Difference]: Finished difference Result 3067 states and 4548 transitions. [2019-11-07 00:53:36,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-07 00:53:36,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 202 [2019-11-07 00:53:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:36,653 INFO L225 Difference]: With dead ends: 3067 [2019-11-07 00:53:36,653 INFO L226 Difference]: Without dead ends: 2842 [2019-11-07 00:53:36,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:53:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2019-11-07 00:53:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2821. [2019-11-07 00:53:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2019-11-07 00:53:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4142 transitions. [2019-11-07 00:53:36,893 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4142 transitions. Word has length 202 [2019-11-07 00:53:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:36,895 INFO L462 AbstractCegarLoop]: Abstraction has 2821 states and 4142 transitions. [2019-11-07 00:53:36,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:53:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4142 transitions. [2019-11-07 00:53:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:53:36,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:36,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:36,911 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash 836940569, now seen corresponding path program 1 times [2019-11-07 00:53:36,913 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:36,913 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792642552] [2019-11-07 00:53:36,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:37,371 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 00:53:37,371 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792642552] [2019-11-07 00:53:37,372 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:37,372 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:53:37,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870517880] [2019-11-07 00:53:37,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:53:37,373 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:53:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:53:37,374 INFO L87 Difference]: Start difference. First operand 2821 states and 4142 transitions. Second operand 18 states. [2019-11-07 00:53:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:37,883 INFO L93 Difference]: Finished difference Result 4807 states and 7068 transitions. [2019-11-07 00:53:37,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:53:37,883 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 203 [2019-11-07 00:53:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:37,903 INFO L225 Difference]: With dead ends: 4807 [2019-11-07 00:53:37,904 INFO L226 Difference]: Without dead ends: 2838 [2019-11-07 00:53:37,948 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 00:53:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2019-11-07 00:53:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2836. [2019-11-07 00:53:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2836 states. [2019-11-07 00:53:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4143 transitions. [2019-11-07 00:53:38,086 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4143 transitions. Word has length 203 [2019-11-07 00:53:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:38,087 INFO L462 AbstractCegarLoop]: Abstraction has 2836 states and 4143 transitions. [2019-11-07 00:53:38,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:53:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4143 transitions. [2019-11-07 00:53:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:53:38,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:38,096 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, 1, 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 00:53:38,096 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:38,097 INFO L82 PathProgramCache]: Analyzing trace with hash -17476821, now seen corresponding path program 1 times [2019-11-07 00:53:38,097 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:38,097 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145741460] [2019-11-07 00:53:38,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:38,410 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 00:53:38,411 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145741460] [2019-11-07 00:53:38,413 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:38,413 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:53:38,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046726476] [2019-11-07 00:53:38,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:53:38,416 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:38,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:53:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:53:38,417 INFO L87 Difference]: Start difference. First operand 2836 states and 4143 transitions. Second operand 6 states. [2019-11-07 00:53:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:39,260 INFO L93 Difference]: Finished difference Result 7697 states and 11356 transitions. [2019-11-07 00:53:39,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:53:39,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2019-11-07 00:53:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:39,314 INFO L225 Difference]: With dead ends: 7697 [2019-11-07 00:53:39,314 INFO L226 Difference]: Without dead ends: 5759 [2019-11-07 00:53:39,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:53:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2019-11-07 00:53:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 5688. [2019-11-07 00:53:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5688 states. [2019-11-07 00:53:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 8455 transitions. [2019-11-07 00:53:39,721 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 8455 transitions. Word has length 212 [2019-11-07 00:53:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:39,722 INFO L462 AbstractCegarLoop]: Abstraction has 5688 states and 8455 transitions. [2019-11-07 00:53:39,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:53:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 8455 transitions. [2019-11-07 00:53:39,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 00:53:39,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:39,735 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, 1, 1, 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 00:53:39,735 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash -924380084, now seen corresponding path program 1 times [2019-11-07 00:53:39,736 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:39,736 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184463424] [2019-11-07 00:53:39,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:39,964 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 00:53:39,965 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184463424] [2019-11-07 00:53:39,965 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:39,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:53:39,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985120163] [2019-11-07 00:53:39,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:53:39,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:53:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:53:39,967 INFO L87 Difference]: Start difference. First operand 5688 states and 8455 transitions. Second operand 11 states. [2019-11-07 00:53:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:40,578 INFO L93 Difference]: Finished difference Result 9703 states and 14196 transitions. [2019-11-07 00:53:40,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:53:40,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 213 [2019-11-07 00:53:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:40,617 INFO L225 Difference]: With dead ends: 9703 [2019-11-07 00:53:40,617 INFO L226 Difference]: Without dead ends: 5742 [2019-11-07 00:53:40,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:53:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2019-11-07 00:53:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5724. [2019-11-07 00:53:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5724 states. [2019-11-07 00:53:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 8491 transitions. [2019-11-07 00:53:40,903 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 8491 transitions. Word has length 213 [2019-11-07 00:53:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:40,903 INFO L462 AbstractCegarLoop]: Abstraction has 5724 states and 8491 transitions. [2019-11-07 00:53:40,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:53:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 8491 transitions. [2019-11-07 00:53:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 00:53:40,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:40,916 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, 1, 1, 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 00:53:40,916 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:40,917 INFO L82 PathProgramCache]: Analyzing trace with hash -337603965, now seen corresponding path program 1 times [2019-11-07 00:53:40,917 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:40,917 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024461350] [2019-11-07 00:53:40,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:41,172 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 00:53:41,172 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024461350] [2019-11-07 00:53:41,173 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:41,173 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:53:41,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353815506] [2019-11-07 00:53:41,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:53:41,174 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:41,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:53:41,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:53:41,174 INFO L87 Difference]: Start difference. First operand 5724 states and 8491 transitions. Second operand 5 states. [2019-11-07 00:53:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:42,544 INFO L93 Difference]: Finished difference Result 19279 states and 28365 transitions. [2019-11-07 00:53:42,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:53:42,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2019-11-07 00:53:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:42,636 INFO L225 Difference]: With dead ends: 19279 [2019-11-07 00:53:42,636 INFO L226 Difference]: Without dead ends: 15284 [2019-11-07 00:53:42,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:53:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15284 states. [2019-11-07 00:53:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15284 to 15172. [2019-11-07 00:53:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15172 states. [2019-11-07 00:53:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 22439 transitions. [2019-11-07 00:53:43,416 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 22439 transitions. Word has length 213 [2019-11-07 00:53:43,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:43,418 INFO L462 AbstractCegarLoop]: Abstraction has 15172 states and 22439 transitions. [2019-11-07 00:53:43,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:53:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 22439 transitions. [2019-11-07 00:53:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-11-07 00:53:43,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:43,445 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:43,445 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:43,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2101577119, now seen corresponding path program 1 times [2019-11-07 00:53:43,446 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:43,446 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141828561] [2019-11-07 00:53:43,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:53:43,688 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141828561] [2019-11-07 00:53:43,688 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:43,688 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:43,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990574987] [2019-11-07 00:53:43,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:43,689 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:43,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:43,690 INFO L87 Difference]: Start difference. First operand 15172 states and 22439 transitions. Second operand 8 states. [2019-11-07 00:53:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:49,592 INFO L93 Difference]: Finished difference Result 45882 states and 70315 transitions. [2019-11-07 00:53:49,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:53:49,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2019-11-07 00:53:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:49,737 INFO L225 Difference]: With dead ends: 45882 [2019-11-07 00:53:49,737 INFO L226 Difference]: Without dead ends: 30775 [2019-11-07 00:53:49,806 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:53:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30775 states. [2019-11-07 00:53:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30775 to 18756. [2019-11-07 00:53:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18756 states. [2019-11-07 00:53:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18756 states to 18756 states and 29827 transitions. [2019-11-07 00:53:51,105 INFO L78 Accepts]: Start accepts. Automaton has 18756 states and 29827 transitions. Word has length 250 [2019-11-07 00:53:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:51,106 INFO L462 AbstractCegarLoop]: Abstraction has 18756 states and 29827 transitions. [2019-11-07 00:53:51,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:53:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 18756 states and 29827 transitions. [2019-11-07 00:53:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:53:51,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:51,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:51,172 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:51,173 INFO L82 PathProgramCache]: Analyzing trace with hash 901490695, now seen corresponding path program 1 times [2019-11-07 00:53:51,173 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:51,173 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242122739] [2019-11-07 00:53:51,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:51,421 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 00:53:51,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242122739] [2019-11-07 00:53:51,422 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:51,422 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:51,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668568119] [2019-11-07 00:53:51,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:51,423 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:51,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:51,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:51,424 INFO L87 Difference]: Start difference. First operand 18756 states and 29827 transitions. Second operand 8 states.