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-f4eb214f-m [2019-10-13 21:15:52,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:52,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:52,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:52,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:52,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:52,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:52,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:52,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:52,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:52,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:52,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:52,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:52,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:52,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:52,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:52,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:52,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:52,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:52,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:52,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:52,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:52,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:52,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:52,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:52,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:52,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:52,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:52,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:52,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:52,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:52,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:52,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:52,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:52,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:52,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:52,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:52,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:52,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:52,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:52,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:52,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:52,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:52,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:52,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:52,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:52,858 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:52,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:52,859 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:52,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:52,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:52,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:52,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:52,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:52,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:52,860 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:52,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:52,861 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:52,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:52,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:52,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:52,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:52,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:52,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:52,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:52,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:52,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:52,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:52,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:52,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:52,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:53,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:53,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:53,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:53,183 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:53,183 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:53,184 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2019-10-13 21:15:53,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3717edde/df8f976bf36449b59f43a296acec37d3/FLAG579c0dc43 [2019-10-13 21:15:53,907 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:53,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2019-10-13 21:15:53,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3717edde/df8f976bf36449b59f43a296acec37d3/FLAG579c0dc43 [2019-10-13 21:15:54,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3717edde/df8f976bf36449b59f43a296acec37d3 [2019-10-13 21:15:54,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:54,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:54,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:54,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:54,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:54,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57118955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54, skipping insertion in model container [2019-10-13 21:15:54,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:54,219 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:54,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:54,919 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:55,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:55,187 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:55,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55 WrapperNode [2019-10-13 21:15:55,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:55,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:55,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:55,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:55,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:55,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:55,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:55,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:55,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:55,479 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:55,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:55,481 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:55,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:55,488 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:57,786 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:57,786 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:57,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:57 BoogieIcfgContainer [2019-10-13 21:15:57,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:57,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:57,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:57,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:57,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:54" (1/3) ... [2019-10-13 21:15:57,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22809246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:57, skipping insertion in model container [2019-10-13 21:15:57,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (2/3) ... [2019-10-13 21:15:57,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22809246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:57, skipping insertion in model container [2019-10-13 21:15:57,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:57" (3/3) ... [2019-10-13 21:15:57,797 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.c [2019-10-13 21:15:57,809 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:57,820 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:57,835 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:57,868 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:57,868 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:57,868 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:57,868 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:57,869 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:57,869 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:57,869 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:57,869 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states. [2019-10-13 21:15:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:15:57,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:57,928 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] [2019-10-13 21:15:57,931 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1721519425, now seen corresponding path program 1 times [2019-10-13 21:15:57,947 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:57,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503268800] [2019-10-13 21:15:57,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:57,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:57,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:58,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503268800] [2019-10-13 21:15:58,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:58,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:58,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613972323] [2019-10-13 21:15:58,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:58,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:58,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:58,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:58,669 INFO L87 Difference]: Start difference. First operand 556 states. Second operand 2 states. [2019-10-13 21:15:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:58,771 INFO L93 Difference]: Finished difference Result 798 states and 1059 transitions. [2019-10-13 21:15:58,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:58,773 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-13 21:15:58,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:58,812 INFO L225 Difference]: With dead ends: 798 [2019-10-13 21:15:58,812 INFO L226 Difference]: Without dead ends: 505 [2019-10-13 21:15:58,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-10-13 21:15:58,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-10-13 21:15:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-13 21:15:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 671 transitions. [2019-10-13 21:15:58,917 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 671 transitions. Word has length 195 [2019-10-13 21:15:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:58,919 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 671 transitions. [2019-10-13 21:15:58,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 671 transitions. [2019-10-13 21:15:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:15:58,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,926 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] [2019-10-13 21:15:58,926 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1479265370, now seen corresponding path program 1 times [2019-10-13 21:15:58,927 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610633453] [2019-10-13 21:15:58,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:59,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610633453] [2019-10-13 21:15:59,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:59,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:59,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29657420] [2019-10-13 21:15:59,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:59,348 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:59,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:59,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:59,350 INFO L87 Difference]: Start difference. First operand 505 states and 671 transitions. Second operand 3 states. [2019-10-13 21:15:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:59,434 INFO L93 Difference]: Finished difference Result 781 states and 1022 transitions. [2019-10-13 21:15:59,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:59,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 21:15:59,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:59,440 INFO L225 Difference]: With dead ends: 781 [2019-10-13 21:15:59,440 INFO L226 Difference]: Without dead ends: 508 [2019-10-13 21:15:59,444 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-13 21:15:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2019-10-13 21:15:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-13 21:15:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 673 transitions. [2019-10-13 21:15:59,502 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 673 transitions. Word has length 196 [2019-10-13 21:15:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:59,502 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 673 transitions. [2019-10-13 21:15:59,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 673 transitions. [2019-10-13 21:15:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 21:15:59,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:59,507 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] [2019-10-13 21:15:59,508 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash 789958250, now seen corresponding path program 1 times [2019-10-13 21:15:59,509 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:59,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325280150] [2019-10-13 21:15:59,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:59,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325280150] [2019-10-13 21:15:59,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:59,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:59,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307616794] [2019-10-13 21:15:59,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:59,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:59,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:59,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:59,683 INFO L87 Difference]: Start difference. First operand 507 states and 673 transitions. Second operand 3 states. [2019-10-13 21:15:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:59,727 INFO L93 Difference]: Finished difference Result 990 states and 1344 transitions. [2019-10-13 21:15:59,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:59,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-10-13 21:15:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:59,734 INFO L225 Difference]: With dead ends: 990 [2019-10-13 21:15:59,734 INFO L226 Difference]: Without dead ends: 548 [2019-10-13 21:15:59,737 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-10-13 21:15:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2019-10-13 21:15:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-10-13 21:15:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 742 transitions. [2019-10-13 21:15:59,773 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 742 transitions. Word has length 206 [2019-10-13 21:15:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:59,774 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 742 transitions. [2019-10-13 21:15:59,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 742 transitions. [2019-10-13 21:15:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:15:59,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:59,786 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] [2019-10-13 21:15:59,787 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash 688583183, now seen corresponding path program 1 times [2019-10-13 21:15:59,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:59,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378912780] [2019-10-13 21:15:59,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:00,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378912780] [2019-10-13 21:16:00,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:00,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:00,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323456488] [2019-10-13 21:16:00,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:00,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:00,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,182 INFO L87 Difference]: Start difference. First operand 547 states and 742 transitions. Second operand 3 states. [2019-10-13 21:16:00,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:00,227 INFO L93 Difference]: Finished difference Result 1107 states and 1546 transitions. [2019-10-13 21:16:00,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:00,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-10-13 21:16:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:00,236 INFO L225 Difference]: With dead ends: 1107 [2019-10-13 21:16:00,236 INFO L226 Difference]: Without dead ends: 625 [2019-10-13 21:16:00,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-13 21:16:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2019-10-13 21:16:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-10-13 21:16:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 874 transitions. [2019-10-13 21:16:00,277 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 874 transitions. Word has length 207 [2019-10-13 21:16:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:00,278 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 874 transitions. [2019-10-13 21:16:00,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 874 transitions. [2019-10-13 21:16:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-13 21:16:00,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,283 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] [2019-10-13 21:16:00,283 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1758410390, now seen corresponding path program 1 times [2019-10-13 21:16:00,284 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725958019] [2019-10-13 21:16:00,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:00,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725958019] [2019-10-13 21:16:00,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:00,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:00,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700121962] [2019-10-13 21:16:00,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:00,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,458 INFO L87 Difference]: Start difference. First operand 624 states and 874 transitions. Second operand 3 states. [2019-10-13 21:16:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:00,500 INFO L93 Difference]: Finished difference Result 1332 states and 1932 transitions. [2019-10-13 21:16:00,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:00,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-10-13 21:16:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:00,506 INFO L225 Difference]: With dead ends: 1332 [2019-10-13 21:16:00,507 INFO L226 Difference]: Without dead ends: 773 [2019-10-13 21:16:00,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-10-13 21:16:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 772. [2019-10-13 21:16:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2019-10-13 21:16:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1126 transitions. [2019-10-13 21:16:00,546 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1126 transitions. Word has length 208 [2019-10-13 21:16:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:00,547 INFO L462 AbstractCegarLoop]: Abstraction has 772 states and 1126 transitions. [2019-10-13 21:16:00,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1126 transitions. [2019-10-13 21:16:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:16:00,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,553 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] [2019-10-13 21:16:00,554 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1379207951, now seen corresponding path program 1 times [2019-10-13 21:16:00,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300863493] [2019-10-13 21:16:00,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:00,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300863493] [2019-10-13 21:16:00,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:00,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:00,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794818064] [2019-10-13 21:16:00,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:00,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:00,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,857 INFO L87 Difference]: Start difference. First operand 772 states and 1126 transitions. Second operand 3 states. [2019-10-13 21:16:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:00,917 INFO L93 Difference]: Finished difference Result 1764 states and 2668 transitions. [2019-10-13 21:16:00,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:00,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-13 21:16:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:00,926 INFO L225 Difference]: With dead ends: 1764 [2019-10-13 21:16:00,927 INFO L226 Difference]: Without dead ends: 1057 [2019-10-13 21:16:00,931 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-10-13 21:16:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1056. [2019-10-13 21:16:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-10-13 21:16:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1606 transitions. [2019-10-13 21:16:00,987 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1606 transitions. Word has length 209 [2019-10-13 21:16:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:00,988 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1606 transitions. [2019-10-13 21:16:00,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1606 transitions. [2019-10-13 21:16:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:16:00,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,996 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] [2019-10-13 21:16:00,996 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1500956376, now seen corresponding path program 1 times [2019-10-13 21:16:00,997 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264751334] [2019-10-13 21:16:00,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:01,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264751334] [2019-10-13 21:16:01,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903464812] [2019-10-13 21:16:01,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:02,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:02,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:02,392 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:02,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:02,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:03,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:03,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:03,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:03,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381789317] [2019-10-13 21:16:03,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:03,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:03,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:03,257 INFO L87 Difference]: Start difference. First operand 1056 states and 1606 transitions. Second operand 9 states. [2019-10-13 21:16:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:04,761 INFO L93 Difference]: Finished difference Result 2090 states and 3192 transitions. [2019-10-13 21:16:04,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:04,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-13 21:16:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:04,772 INFO L225 Difference]: With dead ends: 2090 [2019-10-13 21:16:04,772 INFO L226 Difference]: Without dead ends: 1070 [2019-10-13 21:16:04,779 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 [2019-10-13 21:16:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2019-10-13 21:16:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2019-10-13 21:16:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2019-10-13 21:16:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1624 transitions. [2019-10-13 21:16:04,864 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1624 transitions. Word has length 212 [2019-10-13 21:16:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:04,865 INFO L462 AbstractCegarLoop]: Abstraction has 1070 states and 1624 transitions. [2019-10-13 21:16:04,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1624 transitions. [2019-10-13 21:16:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:16:04,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:04,877 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] [2019-10-13 21:16:05,089 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:05,089 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1105095474, now seen corresponding path program 1 times [2019-10-13 21:16:05,090 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:05,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653189452] [2019-10-13 21:16:05,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:05,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:05,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:05,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653189452] [2019-10-13 21:16:05,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589038248] [2019-10-13 21:16:05,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:06,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:06,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:06,590 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:06,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:07,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:07,062 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:07,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828761313] [2019-10-13 21:16:07,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:07,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:07,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:07,066 INFO L87 Difference]: Start difference. First operand 1070 states and 1624 transitions. Second operand 7 states. [2019-10-13 21:16:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:08,492 INFO L93 Difference]: Finished difference Result 2091 states and 3202 transitions. [2019-10-13 21:16:08,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:08,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-10-13 21:16:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:08,500 INFO L225 Difference]: With dead ends: 2091 [2019-10-13 21:16:08,501 INFO L226 Difference]: Without dead ends: 1072 [2019-10-13 21:16:08,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2019-10-13 21:16:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2019-10-13 21:16:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2019-10-13 21:16:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1627 transitions. [2019-10-13 21:16:08,570 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1627 transitions. Word has length 213 [2019-10-13 21:16:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:08,571 INFO L462 AbstractCegarLoop]: Abstraction has 1072 states and 1627 transitions. [2019-10-13 21:16:08,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1627 transitions. [2019-10-13 21:16:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:16:08,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:08,581 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] [2019-10-13 21:16:08,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:08,782 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:08,782 INFO L82 PathProgramCache]: Analyzing trace with hash 509202227, now seen corresponding path program 1 times [2019-10-13 21:16:08,783 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:08,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184852946] [2019-10-13 21:16:08,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:09,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184852946] [2019-10-13 21:16:09,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224490288] [2019-10-13 21:16:09,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:09,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:09,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:10,159 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:10,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:10,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:10,902 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:10,902 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:10,902 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822291808] [2019-10-13 21:16:10,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:10,903 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:10,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:10,904 INFO L87 Difference]: Start difference. First operand 1072 states and 1627 transitions. Second operand 16 states. [2019-10-13 21:16:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:13,411 INFO L93 Difference]: Finished difference Result 2095 states and 3196 transitions. [2019-10-13 21:16:13,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:13,412 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-10-13 21:16:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:13,419 INFO L225 Difference]: With dead ends: 2095 [2019-10-13 21:16:13,420 INFO L226 Difference]: Without dead ends: 1084 [2019-10-13 21:16:13,424 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 [2019-10-13 21:16:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2019-10-13 21:16:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1082. [2019-10-13 21:16:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2019-10-13 21:16:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1638 transitions. [2019-10-13 21:16:13,472 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1638 transitions. Word has length 214 [2019-10-13 21:16:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:13,473 INFO L462 AbstractCegarLoop]: Abstraction has 1082 states and 1638 transitions. [2019-10-13 21:16:13,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1638 transitions. [2019-10-13 21:16:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:16:13,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:13,479 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] [2019-10-13 21:16:13,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:13,687 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1937030847, now seen corresponding path program 2 times [2019-10-13 21:16:13,688 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:13,688 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249362772] [2019-10-13 21:16:13,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:13,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:13,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:14,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249362772] [2019-10-13 21:16:14,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473096906] [2019-10-13 21:16:14,094 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 [2019-10-13 21:16:14,601 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:14,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:14,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:14,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:14,793 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:15,242 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:15,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:15,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729098827] [2019-10-13 21:16:15,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:15,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:15,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:15,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:15,245 INFO L87 Difference]: Start difference. First operand 1082 states and 1638 transitions. Second operand 14 states. [2019-10-13 21:16:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:17,682 INFO L93 Difference]: Finished difference Result 3438 states and 5266 transitions. [2019-10-13 21:16:17,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:17,683 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-10-13 21:16:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:17,709 INFO L225 Difference]: With dead ends: 3438 [2019-10-13 21:16:17,709 INFO L226 Difference]: Without dead ends: 3178 [2019-10-13 21:16:17,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2019-10-13 21:16:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2869. [2019-10-13 21:16:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2019-10-13 21:16:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4522 transitions. [2019-10-13 21:16:17,903 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4522 transitions. Word has length 215 [2019-10-13 21:16:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:17,906 INFO L462 AbstractCegarLoop]: Abstraction has 2869 states and 4522 transitions. [2019-10-13 21:16:17,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4522 transitions. [2019-10-13 21:16:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:16:17,924 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:17,925 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] [2019-10-13 21:16:18,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:18,134 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -235056697, now seen corresponding path program 1 times [2019-10-13 21:16:18,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:18,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558613712] [2019-10-13 21:16:18,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:18,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:18,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:18,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558613712] [2019-10-13 21:16:18,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074619142] [2019-10-13 21:16:18,409 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 [2019-10-13 21:16:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:19,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:19,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:19,259 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:19,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:19,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:19,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:19,882 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:19,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:19,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719795151] [2019-10-13 21:16:19,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:19,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:19,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:19,884 INFO L87 Difference]: Start difference. First operand 2869 states and 4522 transitions. Second operand 15 states. [2019-10-13 21:16:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:22,090 INFO L93 Difference]: Finished difference Result 5632 states and 8920 transitions. [2019-10-13 21:16:22,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:22,091 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-10-13 21:16:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:22,109 INFO L225 Difference]: With dead ends: 5632 [2019-10-13 21:16:22,110 INFO L226 Difference]: Without dead ends: 2875 [2019-10-13 21:16:22,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2019-10-13 21:16:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2869. [2019-10-13 21:16:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2019-10-13 21:16:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4520 transitions. [2019-10-13 21:16:22,270 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4520 transitions. Word has length 216 [2019-10-13 21:16:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:22,271 INFO L462 AbstractCegarLoop]: Abstraction has 2869 states and 4520 transitions. [2019-10-13 21:16:22,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4520 transitions. [2019-10-13 21:16:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:16:22,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:22,294 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] [2019-10-13 21:16:22,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:22,504 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:22,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1130769190, now seen corresponding path program 1 times [2019-10-13 21:16:22,505 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:22,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051071583] [2019-10-13 21:16:22,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:22,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:22,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:23,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051071583] [2019-10-13 21:16:23,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434638783] [2019-10-13 21:16:23,323 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 [2019-10-13 21:16:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:23,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:23,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:24,100 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:24,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:24,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:24,496 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:24,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:24,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677767050] [2019-10-13 21:16:24,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:24,497 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:24,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:24,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:24,498 INFO L87 Difference]: Start difference. First operand 2869 states and 4520 transitions. Second operand 12 states. [2019-10-13 21:16:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:26,382 INFO L93 Difference]: Finished difference Result 4141 states and 6412 transitions. [2019-10-13 21:16:26,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:26,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2019-10-13 21:16:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:26,395 INFO L225 Difference]: With dead ends: 4141 [2019-10-13 21:16:26,395 INFO L226 Difference]: Without dead ends: 2136 [2019-10-13 21:16:26,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2019-10-13 21:16:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2136. [2019-10-13 21:16:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2019-10-13 21:16:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3279 transitions. [2019-10-13 21:16:26,488 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3279 transitions. Word has length 217 [2019-10-13 21:16:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:26,488 INFO L462 AbstractCegarLoop]: Abstraction has 2136 states and 3279 transitions. [2019-10-13 21:16:26,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:16:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3279 transitions. [2019-10-13 21:16:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:16:26,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:26,500 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] [2019-10-13 21:16:26,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:26,713 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:26,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1693822391, now seen corresponding path program 2 times [2019-10-13 21:16:26,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:26,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466783414] [2019-10-13 21:16:26,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:26,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:26,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:26,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466783414] [2019-10-13 21:16:26,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020438347] [2019-10-13 21:16:26,988 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 [2019-10-13 21:16:27,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:27,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:27,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:27,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:27,728 INFO L321 TraceCheckSpWp]: Computing backward predicates...