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_spec27_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:54,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:54,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:54,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:54,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:54,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:54,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:54,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:54,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:54,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:54,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:54,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:54,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:54,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:54,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:54,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:54,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:54,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:54,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:54,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:54,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:54,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:54,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:54,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:54,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:54,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:54,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:54,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:54,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:54,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:54,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:54,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:54,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:54,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:54,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:54,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:54,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:54,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:54,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:54,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:54,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:54,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:13:54,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:54,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:54,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:54,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:54,204 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:54,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:54,205 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:54,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:54,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:54,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:54,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:54,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:54,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:54,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:54,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:54,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:54,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:54,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:54,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:54,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:54,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:54,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:13:54,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:54,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:54,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:54,516 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:54,517 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:54,517 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2019-10-15 01:13:54,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01c77d2a/3cc2d44b78b24a3aac73bbb83567cf43/FLAG679a6786d [2019-10-15 01:13:55,202 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:55,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2019-10-15 01:13:55,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01c77d2a/3cc2d44b78b24a3aac73bbb83567cf43/FLAG679a6786d [2019-10-15 01:13:55,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01c77d2a/3cc2d44b78b24a3aac73bbb83567cf43 [2019-10-15 01:13:55,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:55,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:55,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:55,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:55,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:55,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4ad246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:55, skipping insertion in model container [2019-10-15 01:13:55,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:55" (1/1) ... [2019-10-15 01:13:55,452 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:55,534 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:56,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:56,360 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:56,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:56,540 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:56,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56 WrapperNode [2019-10-15 01:13:56,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:56,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:56,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:56,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:56,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... [2019-10-15 01:13:56,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:56,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:56,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:56,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:56,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:13:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-15 01:13:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:13:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:13:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:13:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:13:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:13:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:56,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:56,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:56,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:56,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:56,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:13:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:13:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:59,212 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:59,212 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:59,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:59 BoogieIcfgContainer [2019-10-15 01:13:59,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:59,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:59,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:59,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:59,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:55" (1/3) ... [2019-10-15 01:13:59,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b558de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:59, skipping insertion in model container [2019-10-15 01:13:59,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:56" (2/3) ... [2019-10-15 01:13:59,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b558de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:59, skipping insertion in model container [2019-10-15 01:13:59,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:59" (3/3) ... [2019-10-15 01:13:59,223 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2019-10-15 01:13:59,234 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:59,244 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:59,258 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:59,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:59,290 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:59,291 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:59,291 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:59,291 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:59,291 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:59,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:59,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states. [2019-10-15 01:13:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:13:59,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:59,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:59,346 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:59,352 INFO L82 PathProgramCache]: Analyzing trace with hash -938769841, now seen corresponding path program 1 times [2019-10-15 01:13:59,363 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:59,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279401224] [2019-10-15 01:13:59,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:00,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279401224] [2019-10-15 01:14:00,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:00,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087348459] [2019-10-15 01:14:00,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:00,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:00,053 INFO L87 Difference]: Start difference. First operand 511 states. Second operand 2 states. [2019-10-15 01:14:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,137 INFO L93 Difference]: Finished difference Result 729 states and 970 transitions. [2019-10-15 01:14:00,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:00,139 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 209 [2019-10-15 01:14:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,159 INFO L225 Difference]: With dead ends: 729 [2019-10-15 01:14:00,159 INFO L226 Difference]: Without dead ends: 465 [2019-10-15 01:14:00,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-10-15 01:14:00,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2019-10-15 01:14:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-10-15 01:14:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 620 transitions. [2019-10-15 01:14:00,260 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 620 transitions. Word has length 209 [2019-10-15 01:14:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:00,262 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 620 transitions. [2019-10-15 01:14:00,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 620 transitions. [2019-10-15 01:14:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-15 01:14:00,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:00,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:00,269 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash 102873513, now seen corresponding path program 1 times [2019-10-15 01:14:00,270 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:00,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733501028] [2019-10-15 01:14:00,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:00,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733501028] [2019-10-15 01:14:00,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:00,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477205501] [2019-10-15 01:14:00,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:00,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:00,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:00,580 INFO L87 Difference]: Start difference. First operand 465 states and 620 transitions. Second operand 3 states. [2019-10-15 01:14:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,654 INFO L93 Difference]: Finished difference Result 712 states and 934 transitions. [2019-10-15 01:14:00,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:00,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2019-10-15 01:14:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,665 INFO L225 Difference]: With dead ends: 712 [2019-10-15 01:14:00,665 INFO L226 Difference]: Without dead ends: 468 [2019-10-15 01:14:00,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-10-15 01:14:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 467. [2019-10-15 01:14:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-15 01:14:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 622 transitions. [2019-10-15 01:14:00,708 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 622 transitions. Word has length 210 [2019-10-15 01:14:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:00,709 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 622 transitions. [2019-10-15 01:14:00,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 622 transitions. [2019-10-15 01:14:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-15 01:14:00,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:00,714 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, 1, 1, 1, 1] [2019-10-15 01:14:00,715 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:00,715 INFO L82 PathProgramCache]: Analyzing trace with hash -617880459, now seen corresponding path program 1 times [2019-10-15 01:14:00,715 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:00,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611219752] [2019-10-15 01:14:00,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:00,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611219752] [2019-10-15 01:14:00,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:00,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27630523] [2019-10-15 01:14:00,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:00,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:00,863 INFO L87 Difference]: Start difference. First operand 467 states and 622 transitions. Second operand 3 states. [2019-10-15 01:14:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:00,898 INFO L93 Difference]: Finished difference Result 908 states and 1239 transitions. [2019-10-15 01:14:00,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:00,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-10-15 01:14:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:00,903 INFO L225 Difference]: With dead ends: 908 [2019-10-15 01:14:00,903 INFO L226 Difference]: Without dead ends: 506 [2019-10-15 01:14:00,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-10-15 01:14:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 505. [2019-10-15 01:14:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-15 01:14:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 688 transitions. [2019-10-15 01:14:00,931 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 688 transitions. Word has length 216 [2019-10-15 01:14:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:00,932 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 688 transitions. [2019-10-15 01:14:00,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 688 transitions. [2019-10-15 01:14:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-15 01:14:00,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:00,937 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, 1, 1, 1, 1, 1] [2019-10-15 01:14:00,938 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1274420057, now seen corresponding path program 1 times [2019-10-15 01:14:00,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:00,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431201152] [2019-10-15 01:14:00,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:00,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:14:01,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431201152] [2019-10-15 01:14:01,375 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:01,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:14:01,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20340083] [2019-10-15 01:14:01,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:01,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:14:01,378 INFO L87 Difference]: Start difference. First operand 505 states and 688 transitions. Second operand 7 states. [2019-10-15 01:14:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:03,370 INFO L93 Difference]: Finished difference Result 1199 states and 1625 transitions. [2019-10-15 01:14:03,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:14:03,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2019-10-15 01:14:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:03,378 INFO L225 Difference]: With dead ends: 1199 [2019-10-15 01:14:03,378 INFO L226 Difference]: Without dead ends: 973 [2019-10-15 01:14:03,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:14:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-15 01:14:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 967. [2019-10-15 01:14:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-15 01:14:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1300 transitions. [2019-10-15 01:14:03,430 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1300 transitions. Word has length 217 [2019-10-15 01:14:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:03,431 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1300 transitions. [2019-10-15 01:14:03,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1300 transitions. [2019-10-15 01:14:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-15 01:14:03,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:03,436 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, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:03,437 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1026929155, now seen corresponding path program 1 times [2019-10-15 01:14:03,437 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:03,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130067511] [2019-10-15 01:14:03,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:03,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:03,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:14:03,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130067511] [2019-10-15 01:14:03,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:03,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-15 01:14:03,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128401487] [2019-10-15 01:14:03,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-15 01:14:03,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:03,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-15 01:14:03,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:14:03,929 INFO L87 Difference]: Start difference. First operand 967 states and 1300 transitions. Second operand 24 states. [2019-10-15 01:14:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:04,621 INFO L93 Difference]: Finished difference Result 1742 states and 2368 transitions. [2019-10-15 01:14:04,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-15 01:14:04,622 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 218 [2019-10-15 01:14:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:04,630 INFO L225 Difference]: With dead ends: 1742 [2019-10-15 01:14:04,630 INFO L226 Difference]: Without dead ends: 1011 [2019-10-15 01:14:04,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:14:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2019-10-15 01:14:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1009. [2019-10-15 01:14:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-15 01:14:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1383 transitions. [2019-10-15 01:14:04,685 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1383 transitions. Word has length 218 [2019-10-15 01:14:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:04,687 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1383 transitions. [2019-10-15 01:14:04,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-15 01:14:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1383 transitions. [2019-10-15 01:14:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-15 01:14:04,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:04,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:04,693 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:04,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1371369681, now seen corresponding path program 1 times [2019-10-15 01:14:04,694 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:04,694 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590591461] [2019-10-15 01:14:04,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:14:05,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590591461] [2019-10-15 01:14:05,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:05,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:14:05,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786052596] [2019-10-15 01:14:05,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:14:05,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:05,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:14:05,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:14:05,061 INFO L87 Difference]: Start difference. First operand 1009 states and 1383 transitions. Second operand 10 states. [2019-10-15 01:14:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:05,148 INFO L93 Difference]: Finished difference Result 1571 states and 2146 transitions. [2019-10-15 01:14:05,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:05,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2019-10-15 01:14:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:05,157 INFO L225 Difference]: With dead ends: 1571 [2019-10-15 01:14:05,158 INFO L226 Difference]: Without dead ends: 1069 [2019-10-15 01:14:05,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:14:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2019-10-15 01:14:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1021. [2019-10-15 01:14:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-10-15 01:14:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1394 transitions. [2019-10-15 01:14:05,225 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1394 transitions. Word has length 222 [2019-10-15 01:14:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:05,226 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1394 transitions. [2019-10-15 01:14:05,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:14:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1394 transitions. [2019-10-15 01:14:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:14:05,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:05,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:05,232 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1192464368, now seen corresponding path program 1 times [2019-10-15 01:14:05,232 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:05,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875207626] [2019-10-15 01:14:05,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:05,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:05,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:05,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875207626] [2019-10-15 01:14:05,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067959228] [2019-10-15 01:14:05,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:06,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:06,368 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:06,816 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:06,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:07,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:07,154 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:07,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 9] total 19 [2019-10-15 01:14:07,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892336393] [2019-10-15 01:14:07,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:07,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:07,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:07,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:07,157 INFO L87 Difference]: Start difference. First operand 1021 states and 1394 transitions. Second operand 9 states. [2019-10-15 01:14:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:08,783 INFO L93 Difference]: Finished difference Result 2020 states and 2768 transitions. [2019-10-15 01:14:08,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:08,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2019-10-15 01:14:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:08,793 INFO L225 Difference]: With dead ends: 2020 [2019-10-15 01:14:08,793 INFO L226 Difference]: Without dead ends: 1035 [2019-10-15 01:14:08,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 440 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:14:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2019-10-15 01:14:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2019-10-15 01:14:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2019-10-15 01:14:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1412 transitions. [2019-10-15 01:14:08,867 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1412 transitions. Word has length 227 [2019-10-15 01:14:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:08,867 INFO L462 AbstractCegarLoop]: Abstraction has 1035 states and 1412 transitions. [2019-10-15 01:14:08,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1412 transitions. [2019-10-15 01:14:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 01:14:08,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:08,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:09,084 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:09,085 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash 890726754, now seen corresponding path program 1 times [2019-10-15 01:14:09,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,086 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687788643] [2019-10-15 01:14:09,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:09,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687788643] [2019-10-15 01:14:09,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054781619] [2019-10-15 01:14:09,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:09,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:10,086 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:10,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:10,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:10,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:10,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 15 [2019-10-15 01:14:10,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488531835] [2019-10-15 01:14:10,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:10,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:10,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:10,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:14:10,487 INFO L87 Difference]: Start difference. First operand 1035 states and 1412 transitions. Second operand 7 states. [2019-10-15 01:14:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:11,468 INFO L93 Difference]: Finished difference Result 2021 states and 2772 transitions. [2019-10-15 01:14:11,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:11,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2019-10-15 01:14:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:11,482 INFO L225 Difference]: With dead ends: 2021 [2019-10-15 01:14:11,482 INFO L226 Difference]: Without dead ends: 1037 [2019-10-15 01:14:11,486 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 447 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:14:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2019-10-15 01:14:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2019-10-15 01:14:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-15 01:14:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1415 transitions. [2019-10-15 01:14:11,539 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1415 transitions. Word has length 228 [2019-10-15 01:14:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:11,539 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1415 transitions. [2019-10-15 01:14:11,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1415 transitions. [2019-10-15 01:14:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-15 01:14:11,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:11,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:11,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:11,754 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1569726776, now seen corresponding path program 1 times [2019-10-15 01:14:11,755 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:11,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413505208] [2019-10-15 01:14:11,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:11,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:11,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:11,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413505208] [2019-10-15 01:14:11,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007928671] [2019-10-15 01:14:11,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:12,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:12,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:12,683 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:13,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:13,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:13,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:13,264 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:13,265 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [6] total 20 [2019-10-15 01:14:13,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911532100] [2019-10-15 01:14:13,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:13,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:13,279 INFO L87 Difference]: Start difference. First operand 1037 states and 1415 transitions. Second operand 16 states. [2019-10-15 01:14:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:14,587 INFO L93 Difference]: Finished difference Result 2025 states and 2772 transitions. [2019-10-15 01:14:14,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:14,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 229 [2019-10-15 01:14:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:14,598 INFO L225 Difference]: With dead ends: 2025 [2019-10-15 01:14:14,598 INFO L226 Difference]: Without dead ends: 1049 [2019-10-15 01:14:14,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 444 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:14:14,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-15 01:14:14,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2019-10-15 01:14:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2019-10-15 01:14:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1426 transitions. [2019-10-15 01:14:14,658 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1426 transitions. Word has length 229 [2019-10-15 01:14:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:14,658 INFO L462 AbstractCegarLoop]: Abstraction has 1047 states and 1426 transitions. [2019-10-15 01:14:14,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1426 transitions. [2019-10-15 01:14:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 01:14:14,666 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:14,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:14,873 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:14,874 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:14,875 INFO L82 PathProgramCache]: Analyzing trace with hash -667059422, now seen corresponding path program 2 times [2019-10-15 01:14:14,875 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:14,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152733606] [2019-10-15 01:14:14,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:14:15,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152733606] [2019-10-15 01:14:15,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538368822] [2019-10-15 01:14:15,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:15,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:15,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:15,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:15,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:15,697 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:16,174 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:16,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6] total 18 [2019-10-15 01:14:16,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369835985] [2019-10-15 01:14:16,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:16,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:16,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:16,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:16,176 INFO L87 Difference]: Start difference. First operand 1047 states and 1426 transitions. Second operand 14 states. [2019-10-15 01:14:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:18,079 INFO L93 Difference]: Finished difference Result 3876 states and 5363 transitions. [2019-10-15 01:14:18,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:18,080 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 230 [2019-10-15 01:14:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:18,102 INFO L225 Difference]: With dead ends: 3876 [2019-10-15 01:14:18,103 INFO L226 Difference]: Without dead ends: 3193 [2019-10-15 01:14:18,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2019-10-15 01:14:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2288. [2019-10-15 01:14:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-10-15 01:14:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3175 transitions. [2019-10-15 01:14:18,228 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3175 transitions. Word has length 230 [2019-10-15 01:14:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:18,229 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 3175 transitions. [2019-10-15 01:14:18,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3175 transitions. [2019-10-15 01:14:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-15 01:14:18,239 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:18,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:18,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:18,455 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:18,456 INFO L82 PathProgramCache]: Analyzing trace with hash -43623203, now seen corresponding path program 1 times [2019-10-15 01:14:18,456 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:18,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166375528] [2019-10-15 01:14:18,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:18,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:18,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:14:18,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166375528] [2019-10-15 01:14:18,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207096235] [2019-10-15 01:14:18,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:19,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:19,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:19,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:19,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:19,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:19,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:19,987 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:19,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [6] total 19 [2019-10-15 01:14:19,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471010991] [2019-10-15 01:14:19,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:19,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:19,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:19,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:19,989 INFO L87 Difference]: Start difference. First operand 2288 states and 3175 transitions. Second operand 15 states. [2019-10-15 01:14:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,596 INFO L93 Difference]: Finished difference Result 4470 states and 6226 transitions. [2019-10-15 01:14:21,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:21,597 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 231 [2019-10-15 01:14:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:21,610 INFO L225 Difference]: With dead ends: 4470 [2019-10-15 01:14:21,610 INFO L226 Difference]: Without dead ends: 2294 [2019-10-15 01:14:21,617 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 448 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2019-10-15 01:14:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2288. [2019-10-15 01:14:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-10-15 01:14:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3173 transitions. [2019-10-15 01:14:21,714 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3173 transitions. Word has length 231 [2019-10-15 01:14:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:21,715 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 3173 transitions. [2019-10-15 01:14:21,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3173 transitions. [2019-10-15 01:14:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:14:21,723 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:21,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:21,932 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash -180243310, now seen corresponding path program 1 times [2019-10-15 01:14:21,933 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:21,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501059413] [2019-10-15 01:14:21,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:21,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:14:22,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501059413] [2019-10-15 01:14:22,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464339026] [2019-10-15 01:14:22,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:22,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:22,747 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:23,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:23,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:23,108 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:23,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6] total 16 [2019-10-15 01:14:23,108 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932552271] [2019-10-15 01:14:23,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:23,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:23,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:23,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:23,110 INFO L87 Difference]: Start difference. First operand 2288 states and 3173 transitions. Second operand 12 states. [2019-10-15 01:14:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:24,368 INFO L93 Difference]: Finished difference Result 4023 states and 5536 transitions. [2019-10-15 01:14:24,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:24,368 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 232 [2019-10-15 01:14:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:24,380 INFO L225 Difference]: With dead ends: 4023 [2019-10-15 01:14:24,381 INFO L226 Difference]: Without dead ends: 2077 [2019-10-15 01:14:24,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2019-10-15 01:14:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2077. [2019-10-15 01:14:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-15 01:14:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2841 transitions. [2019-10-15 01:14:24,478 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2841 transitions. Word has length 232 [2019-10-15 01:14:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:24,479 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 2841 transitions. [2019-10-15 01:14:24,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2841 transitions. [2019-10-15 01:14:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:14:24,487 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:24,488 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:24,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:24,697 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:24,698 INFO L82 PathProgramCache]: Analyzing trace with hash 653155757, now seen corresponding path program 1 times [2019-10-15 01:14:24,698 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:24,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937286427] [2019-10-15 01:14:24,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:24,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937286427] [2019-10-15 01:14:24,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224781739] [2019-10-15 01:14:24,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:25,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:14:25,579 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:25,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:25,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:26,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:26,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:26,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739583631] [2019-10-15 01:14:26,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:26,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:26,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:26,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:26,089 INFO L87 Difference]: Start difference. First operand 2077 states and 2841 transitions. Second operand 7 states. [2019-10-15 01:14:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:27,341 INFO L93 Difference]: Finished difference Result 3104 states and 4243 transitions. [2019-10-15 01:14:27,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:27,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2019-10-15 01:14:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:27,355 INFO L225 Difference]: With dead ends: 3104 [2019-10-15 01:14:27,355 INFO L226 Difference]: Without dead ends: 2089 [2019-10-15 01:14:27,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 455 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2019-10-15 01:14:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2077. [2019-10-15 01:14:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-15 01:14:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2839 transitions. [2019-10-15 01:14:27,450 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2839 transitions. Word has length 233 [2019-10-15 01:14:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:27,450 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 2839 transitions. [2019-10-15 01:14:27,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2839 transitions. [2019-10-15 01:14:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:14:27,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:27,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:27,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:27,672 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1865589076, now seen corresponding path program 2 times [2019-10-15 01:14:27,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:27,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763504292] [2019-10-15 01:14:27,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:27,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:14:27,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763504292] [2019-10-15 01:14:27,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394489837] [2019-10-15 01:14:27,831 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:28,382 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:28,382 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:28,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:28,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:28,504 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:29,165 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:29,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6] total 18