java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:55,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:55,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:55,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:55,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:55,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:55,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:55,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:55,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:55,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:55,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:55,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:55,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:55,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:55,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:55,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:55,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:55,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:55,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:55,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:55,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:55,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:55,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:55,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:55,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:55,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:55,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:55,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:55,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:55,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:55,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:55,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:55,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:55,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:55,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:55,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:55,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:55,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:55,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:55,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:55,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:55,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:55,171 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:55,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:55,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:55,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:55,176 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:55,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:55,177 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:55,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:55,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:55,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:55,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:55,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:55,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:55,179 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:55,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:55,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:55,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:55,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:55,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:55,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:55,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:55,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:55,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:55,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:55,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:55,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:55,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:55,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:55,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:55,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:55,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:55,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:55,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:55,495 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:55,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2019-10-15 01:14:55,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e33d267c9/2b3df79ef3d142db99527ba71ca0a7a0/FLAG8b5fb8558 [2019-10-15 01:14:56,190 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:56,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2019-10-15 01:14:56,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e33d267c9/2b3df79ef3d142db99527ba71ca0a7a0/FLAG8b5fb8558 [2019-10-15 01:14:56,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e33d267c9/2b3df79ef3d142db99527ba71ca0a7a0 [2019-10-15 01:14:56,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:56,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:56,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:56,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:56,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:56,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:56" (1/1) ... [2019-10-15 01:14:56,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4e00a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:56, skipping insertion in model container [2019-10-15 01:14:56,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:56" (1/1) ... [2019-10-15 01:14:56,393 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:56,467 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:57,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:57,217 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:57,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:57,465 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:57,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57 WrapperNode [2019-10-15 01:14:57,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:57,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:57,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:57,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:57,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... [2019-10-15 01:14:57,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:57,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:57,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:57,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:57,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:14:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:14:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:14:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:57,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:57,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:57,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:57,795 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:14:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:57,822 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:57,823 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:57,824 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:57,825 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:57,826 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-15 01:14:57,827 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-15 01:14:57,828 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:00,170 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:00,170 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:00,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:00 BoogieIcfgContainer [2019-10-15 01:15:00,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:00,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:00,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:00,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:00,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:56" (1/3) ... [2019-10-15 01:15:00,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1951fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:00, skipping insertion in model container [2019-10-15 01:15:00,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:57" (2/3) ... [2019-10-15 01:15:00,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1951fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:00, skipping insertion in model container [2019-10-15 01:15:00,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:00" (3/3) ... [2019-10-15 01:15:00,180 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.c [2019-10-15 01:15:00,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:00,200 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:00,212 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:00,252 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:00,256 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:00,256 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:00,256 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:00,256 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:00,256 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:00,257 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:00,257 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states. [2019-10-15 01:15:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:15:00,332 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:00,334 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:00,336 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1721519425, now seen corresponding path program 1 times [2019-10-15 01:15:00,353 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:00,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833530529] [2019-10-15 01:15:00,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:00,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:00,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:01,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833530529] [2019-10-15 01:15:01,082 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:01,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:01,083 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838189412] [2019-10-15 01:15:01,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:01,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:01,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:01,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:01,109 INFO L87 Difference]: Start difference. First operand 556 states. Second operand 2 states. [2019-10-15 01:15:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:01,185 INFO L93 Difference]: Finished difference Result 798 states and 1059 transitions. [2019-10-15 01:15:01,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:01,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-15 01:15:01,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:01,213 INFO L225 Difference]: With dead ends: 798 [2019-10-15 01:15:01,213 INFO L226 Difference]: Without dead ends: 505 [2019-10-15 01:15:01,228 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-10-15 01:15:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-10-15 01:15:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-15 01:15:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 671 transitions. [2019-10-15 01:15:01,379 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 671 transitions. Word has length 195 [2019-10-15 01:15:01,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:01,383 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 671 transitions. [2019-10-15 01:15:01,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 671 transitions. [2019-10-15 01:15:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:15:01,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:01,390 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:01,390 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1479265370, now seen corresponding path program 1 times [2019-10-15 01:15:01,391 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:01,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141799738] [2019-10-15 01:15:01,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:01,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:01,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:01,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141799738] [2019-10-15 01:15:01,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:01,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:01,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828785276] [2019-10-15 01:15:01,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:01,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:01,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:01,642 INFO L87 Difference]: Start difference. First operand 505 states and 671 transitions. Second operand 3 states. [2019-10-15 01:15:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:01,717 INFO L93 Difference]: Finished difference Result 781 states and 1022 transitions. [2019-10-15 01:15:01,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:01,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-15 01:15:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:01,729 INFO L225 Difference]: With dead ends: 781 [2019-10-15 01:15:01,729 INFO L226 Difference]: Without dead ends: 508 [2019-10-15 01:15:01,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-15 01:15:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2019-10-15 01:15:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-15 01:15:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 673 transitions. [2019-10-15 01:15:01,772 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 673 transitions. Word has length 196 [2019-10-15 01:15:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:01,773 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 673 transitions. [2019-10-15 01:15:01,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 673 transitions. [2019-10-15 01:15:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-15 01:15:01,777 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:01,777 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:01,778 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:01,778 INFO L82 PathProgramCache]: Analyzing trace with hash 789958250, now seen corresponding path program 1 times [2019-10-15 01:15:01,778 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:01,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416238645] [2019-10-15 01:15:01,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:01,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:01,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:02,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416238645] [2019-10-15 01:15:02,034 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:02,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:02,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286973567] [2019-10-15 01:15:02,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:02,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:02,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:02,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:02,041 INFO L87 Difference]: Start difference. First operand 507 states and 673 transitions. Second operand 3 states. [2019-10-15 01:15:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:02,110 INFO L93 Difference]: Finished difference Result 990 states and 1344 transitions. [2019-10-15 01:15:02,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:02,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-10-15 01:15:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:02,121 INFO L225 Difference]: With dead ends: 990 [2019-10-15 01:15:02,121 INFO L226 Difference]: Without dead ends: 548 [2019-10-15 01:15:02,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-10-15 01:15:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2019-10-15 01:15:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-10-15 01:15:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 742 transitions. [2019-10-15 01:15:02,173 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 742 transitions. Word has length 206 [2019-10-15 01:15:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:02,174 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 742 transitions. [2019-10-15 01:15:02,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 742 transitions. [2019-10-15 01:15:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-15 01:15:02,186 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:02,187 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:02,187 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash 688583183, now seen corresponding path program 1 times [2019-10-15 01:15:02,188 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:02,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704883013] [2019-10-15 01:15:02,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:02,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704883013] [2019-10-15 01:15:02,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:02,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:02,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588310779] [2019-10-15 01:15:02,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:02,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:02,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:02,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:02,557 INFO L87 Difference]: Start difference. First operand 547 states and 742 transitions. Second operand 3 states. [2019-10-15 01:15:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:02,598 INFO L93 Difference]: Finished difference Result 1107 states and 1546 transitions. [2019-10-15 01:15:02,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:02,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-10-15 01:15:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:02,605 INFO L225 Difference]: With dead ends: 1107 [2019-10-15 01:15:02,605 INFO L226 Difference]: Without dead ends: 625 [2019-10-15 01:15:02,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-15 01:15:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2019-10-15 01:15:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-10-15 01:15:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 874 transitions. [2019-10-15 01:15:02,641 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 874 transitions. Word has length 207 [2019-10-15 01:15:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:02,642 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 874 transitions. [2019-10-15 01:15:02,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 874 transitions. [2019-10-15 01:15:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-15 01:15:02,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:02,649 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:02,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:02,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1758410390, now seen corresponding path program 1 times [2019-10-15 01:15:02,650 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:02,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937045006] [2019-10-15 01:15:02,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:02,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937045006] [2019-10-15 01:15:02,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:02,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:02,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111415750] [2019-10-15 01:15:02,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:02,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:02,840 INFO L87 Difference]: Start difference. First operand 624 states and 874 transitions. Second operand 3 states. [2019-10-15 01:15:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:02,876 INFO L93 Difference]: Finished difference Result 1332 states and 1932 transitions. [2019-10-15 01:15:02,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:02,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-10-15 01:15:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:02,882 INFO L225 Difference]: With dead ends: 1332 [2019-10-15 01:15:02,883 INFO L226 Difference]: Without dead ends: 773 [2019-10-15 01:15:02,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-15 01:15:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 772. [2019-10-15 01:15:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2019-10-15 01:15:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1126 transitions. [2019-10-15 01:15:02,975 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1126 transitions. Word has length 208 [2019-10-15 01:15:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:02,976 INFO L462 AbstractCegarLoop]: Abstraction has 772 states and 1126 transitions. [2019-10-15 01:15:02,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1126 transitions. [2019-10-15 01:15:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:15:02,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:02,982 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:02,982 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:02,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1379207951, now seen corresponding path program 1 times [2019-10-15 01:15:02,983 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:02,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465360122] [2019-10-15 01:15:02,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:02,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:15:03,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465360122] [2019-10-15 01:15:03,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:03,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:03,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769342211] [2019-10-15 01:15:03,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:03,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:03,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:03,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:03,169 INFO L87 Difference]: Start difference. First operand 772 states and 1126 transitions. Second operand 3 states. [2019-10-15 01:15:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:03,236 INFO L93 Difference]: Finished difference Result 1764 states and 2668 transitions. [2019-10-15 01:15:03,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:03,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-15 01:15:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:03,248 INFO L225 Difference]: With dead ends: 1764 [2019-10-15 01:15:03,248 INFO L226 Difference]: Without dead ends: 1057 [2019-10-15 01:15:03,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-10-15 01:15:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1056. [2019-10-15 01:15:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-10-15 01:15:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1606 transitions. [2019-10-15 01:15:03,322 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1606 transitions. Word has length 209 [2019-10-15 01:15:03,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:03,324 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1606 transitions. [2019-10-15 01:15:03,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1606 transitions. [2019-10-15 01:15:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-15 01:15:03,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:03,333 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:03,333 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:03,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1500956376, now seen corresponding path program 1 times [2019-10-15 01:15:03,334 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:03,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589446618] [2019-10-15 01:15:03,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:03,335 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:03,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:03,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589446618] [2019-10-15 01:15:03,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171482688] [2019-10-15 01:15:03,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:04,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:04,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:04,960 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:05,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:05,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:05,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:05,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:05,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:15:05,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158746154] [2019-10-15 01:15:05,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:05,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:05,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:05,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:05,754 INFO L87 Difference]: Start difference. First operand 1056 states and 1606 transitions. Second operand 9 states. [2019-10-15 01:15:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:07,178 INFO L93 Difference]: Finished difference Result 2090 states and 3192 transitions. [2019-10-15 01:15:07,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:07,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-15 01:15:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:07,185 INFO L225 Difference]: With dead ends: 2090 [2019-10-15 01:15:07,185 INFO L226 Difference]: Without dead ends: 1070 [2019-10-15 01:15:07,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:15:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2019-10-15 01:15:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2019-10-15 01:15:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2019-10-15 01:15:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1624 transitions. [2019-10-15 01:15:07,246 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1624 transitions. Word has length 212 [2019-10-15 01:15:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:07,246 INFO L462 AbstractCegarLoop]: Abstraction has 1070 states and 1624 transitions. [2019-10-15 01:15:07,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1624 transitions. [2019-10-15 01:15:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-15 01:15:07,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:07,254 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:07,462 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:07,463 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:07,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:07,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1105095474, now seen corresponding path program 1 times [2019-10-15 01:15:07,463 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:07,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705924878] [2019-10-15 01:15:07,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:07,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:07,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:08,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705924878] [2019-10-15 01:15:08,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365345701] [2019-10-15 01:15:08,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:08,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:08,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:08,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:09,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:09,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:09,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:09,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:15:09,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443304271] [2019-10-15 01:15:09,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:09,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:09,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:09,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:09,426 INFO L87 Difference]: Start difference. First operand 1070 states and 1624 transitions. Second operand 7 states. [2019-10-15 01:15:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:11,146 INFO L93 Difference]: Finished difference Result 2091 states and 3202 transitions. [2019-10-15 01:15:11,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:11,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-10-15 01:15:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:11,157 INFO L225 Difference]: With dead ends: 2091 [2019-10-15 01:15:11,158 INFO L226 Difference]: Without dead ends: 1072 [2019-10-15 01:15:11,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:15:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2019-10-15 01:15:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2019-10-15 01:15:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2019-10-15 01:15:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1627 transitions. [2019-10-15 01:15:11,252 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1627 transitions. Word has length 213 [2019-10-15 01:15:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:11,253 INFO L462 AbstractCegarLoop]: Abstraction has 1072 states and 1627 transitions. [2019-10-15 01:15:11,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1627 transitions. [2019-10-15 01:15:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 01:15:11,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:11,265 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:11,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:11,475 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 509202227, now seen corresponding path program 1 times [2019-10-15 01:15:11,476 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:11,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5304868] [2019-10-15 01:15:11,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:11,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:11,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:11,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5304868] [2019-10-15 01:15:11,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471904592] [2019-10-15 01:15:11,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:12,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:12,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:12,848 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:13,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:13,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:13,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:13,527 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:13,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:15:13,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074014532] [2019-10-15 01:15:13,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:15:13,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:13,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:15:13,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:15:13,530 INFO L87 Difference]: Start difference. First operand 1072 states and 1627 transitions. Second operand 16 states. [2019-10-15 01:15:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:16,068 INFO L93 Difference]: Finished difference Result 2095 states and 3196 transitions. [2019-10-15 01:15:16,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:16,068 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-10-15 01:15:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:16,074 INFO L225 Difference]: With dead ends: 2095 [2019-10-15 01:15:16,074 INFO L226 Difference]: Without dead ends: 1084 [2019-10-15 01:15:16,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 417 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:15:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2019-10-15 01:15:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1082. [2019-10-15 01:15:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2019-10-15 01:15:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1638 transitions. [2019-10-15 01:15:16,144 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1638 transitions. Word has length 214 [2019-10-15 01:15:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:16,144 INFO L462 AbstractCegarLoop]: Abstraction has 1082 states and 1638 transitions. [2019-10-15 01:15:16,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:15:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1638 transitions. [2019-10-15 01:15:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-15 01:15:16,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:16,153 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:16,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:16,363 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:16,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1937030847, now seen corresponding path program 2 times [2019-10-15 01:15:16,364 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:16,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749157086] [2019-10-15 01:15:16,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:16,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:16,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749157086] [2019-10-15 01:15:16,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264075436] [2019-10-15 01:15:16,768 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:17,327 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:17,327 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:17,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:17,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:17,535 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:15:18,047 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:18,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:15:18,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285816607] [2019-10-15 01:15:18,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:18,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:18,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:18,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:18,050 INFO L87 Difference]: Start difference. First operand 1082 states and 1638 transitions. Second operand 14 states. [2019-10-15 01:15:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:20,482 INFO L93 Difference]: Finished difference Result 3438 states and 5266 transitions. [2019-10-15 01:15:20,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:20,482 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-10-15 01:15:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:20,506 INFO L225 Difference]: With dead ends: 3438 [2019-10-15 01:15:20,506 INFO L226 Difference]: Without dead ends: 3178 [2019-10-15 01:15:20,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:15:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2019-10-15 01:15:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2869. [2019-10-15 01:15:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2019-10-15 01:15:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4522 transitions. [2019-10-15 01:15:20,720 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4522 transitions. Word has length 215 [2019-10-15 01:15:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:20,721 INFO L462 AbstractCegarLoop]: Abstraction has 2869 states and 4522 transitions. [2019-10-15 01:15:20,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4522 transitions. [2019-10-15 01:15:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-15 01:15:20,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:20,740 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:20,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:20,947 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:20,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:20,948 INFO L82 PathProgramCache]: Analyzing trace with hash -235056697, now seen corresponding path program 1 times [2019-10-15 01:15:20,948 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:20,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295895946] [2019-10-15 01:15:20,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:20,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:21,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295895946] [2019-10-15 01:15:21,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23037590] [2019-10-15 01:15:21,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:21,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:21,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:22,053 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:22,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:22,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:22,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:22,744 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:22,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:15:22,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847654068] [2019-10-15 01:15:22,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:15:22,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:15:22,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:22,747 INFO L87 Difference]: Start difference. First operand 2869 states and 4522 transitions. Second operand 15 states. [2019-10-15 01:15:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:25,024 INFO L93 Difference]: Finished difference Result 5632 states and 8920 transitions. [2019-10-15 01:15:25,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:25,025 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-10-15 01:15:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:25,047 INFO L225 Difference]: With dead ends: 5632 [2019-10-15 01:15:25,047 INFO L226 Difference]: Without dead ends: 2875 [2019-10-15 01:15:25,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:15:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2019-10-15 01:15:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2869. [2019-10-15 01:15:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2019-10-15 01:15:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4520 transitions. [2019-10-15 01:15:25,213 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4520 transitions. Word has length 216 [2019-10-15 01:15:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:25,214 INFO L462 AbstractCegarLoop]: Abstraction has 2869 states and 4520 transitions. [2019-10-15 01:15:25,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:15:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4520 transitions. [2019-10-15 01:15:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-15 01:15:25,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:25,236 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:25,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:25,456 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1130769190, now seen corresponding path program 1 times [2019-10-15 01:15:25,457 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:25,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839327419] [2019-10-15 01:15:25,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:25,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:25,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:25,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839327419] [2019-10-15 01:15:25,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633273584] [2019-10-15 01:15:25,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:26,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:26,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:15:26,578 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:26,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:26,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:26,948 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:26,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:15:26,948 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124250196] [2019-10-15 01:15:26,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:15:26,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:26,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:15:26,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:26,950 INFO L87 Difference]: Start difference. First operand 2869 states and 4520 transitions. Second operand 12 states. [2019-10-15 01:15:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:28,795 INFO L93 Difference]: Finished difference Result 4141 states and 6412 transitions. [2019-10-15 01:15:28,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:28,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2019-10-15 01:15:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:28,809 INFO L225 Difference]: With dead ends: 4141 [2019-10-15 01:15:28,809 INFO L226 Difference]: Without dead ends: 2136 [2019-10-15 01:15:28,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:15:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2019-10-15 01:15:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2136. [2019-10-15 01:15:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2019-10-15 01:15:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3279 transitions. [2019-10-15 01:15:28,907 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3279 transitions. Word has length 217 [2019-10-15 01:15:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:28,907 INFO L462 AbstractCegarLoop]: Abstraction has 2136 states and 3279 transitions. [2019-10-15 01:15:28,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:15:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3279 transitions. [2019-10-15 01:15:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-15 01:15:28,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:28,919 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:15:29,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:29,127 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:29,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1693822391, now seen corresponding path program 2 times [2019-10-15 01:15:29,128 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:29,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045126435] [2019-10-15 01:15:29,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:29,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:15:29,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045126435] [2019-10-15 01:15:29,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349269869] [2019-10-15 01:15:29,487 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:30,087 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:30,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:30,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:15:30,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:30,244 INFO L321 TraceCheckSpWp]: Computing backward predicates...