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-f4eb214f-m [2019-10-13 21:14:56,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:56,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:56,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:56,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:56,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:56,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:56,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:56,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:56,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:56,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:56,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:56,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:56,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:56,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:56,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:56,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:56,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:56,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:56,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:56,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:56,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:56,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:56,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:56,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:56,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:56,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:56,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:56,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:56,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:56,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:56,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:56,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:56,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:56,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:56,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:56,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:56,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:56,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:56,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:56,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:56,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:56,135 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:56,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:56,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:56,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:56,136 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:56,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:56,137 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:56,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:56,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:56,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:56,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:56,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:56,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:56,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:56,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:56,138 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:56,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:56,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:56,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:56,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:56,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:56,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:56,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:56,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:56,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:56,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:56,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:56,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:56,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:56,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:56,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:56,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:56,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:56,421 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:56,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2019-10-13 21:14:56,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e074820df/41d432f4f1384d2d950c85595fe68f2b/FLAGe2551878a [2019-10-13 21:14:57,095 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:57,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2019-10-13 21:14:57,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e074820df/41d432f4f1384d2d950c85595fe68f2b/FLAGe2551878a [2019-10-13 21:14:57,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e074820df/41d432f4f1384d2d950c85595fe68f2b [2019-10-13 21:14:57,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:57,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:57,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:57,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:57,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:57,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67df4a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57, skipping insertion in model container [2019-10-13 21:14:57,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,350 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:57,417 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:58,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:58,146 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:58,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:58,326 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:58,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58 WrapperNode [2019-10-13 21:14:58,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:58,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:58,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:58,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:58,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:58,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:58,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:58,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:58,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:58,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:58,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:58,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:58,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:58,579 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:14:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:14:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:14:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:58,584 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:58,585 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:58,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:58,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:58,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:58,586 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:58,587 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:58,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:58,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:14:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:14:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:58,607 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:00,589 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:00,589 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:00,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:00 BoogieIcfgContainer [2019-10-13 21:15:00,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:00,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:00,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:00,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:00,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:57" (1/3) ... [2019-10-13 21:15:00,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d962a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:00, skipping insertion in model container [2019-10-13 21:15:00,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (2/3) ... [2019-10-13 21:15:00,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d962a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:00, skipping insertion in model container [2019-10-13 21:15:00,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:00" (3/3) ... [2019-10-13 21:15:00,601 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2019-10-13 21:15:00,610 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:00,619 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:00,629 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:00,667 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:00,667 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:00,667 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:00,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:00,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:00,668 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:00,668 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:00,668 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states. [2019-10-13 21:15:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:15:00,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:00,750 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] [2019-10-13 21:15:00,752 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash -938769841, now seen corresponding path program 1 times [2019-10-13 21:15:00,766 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:00,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89793652] [2019-10-13 21:15:00,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:01,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89793652] [2019-10-13 21:15:01,404 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:01,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:01,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465463078] [2019-10-13 21:15:01,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:01,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:01,428 INFO L87 Difference]: Start difference. First operand 511 states. Second operand 2 states. [2019-10-13 21:15:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:01,497 INFO L93 Difference]: Finished difference Result 729 states and 970 transitions. [2019-10-13 21:15:01,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:01,499 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 209 [2019-10-13 21:15:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:01,520 INFO L225 Difference]: With dead ends: 729 [2019-10-13 21:15:01,520 INFO L226 Difference]: Without dead ends: 465 [2019-10-13 21:15:01,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-10-13 21:15:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2019-10-13 21:15:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-10-13 21:15:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 620 transitions. [2019-10-13 21:15:01,617 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 620 transitions. Word has length 209 [2019-10-13 21:15:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:01,620 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 620 transitions. [2019-10-13 21:15:01,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 620 transitions. [2019-10-13 21:15:01,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-13 21:15:01,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:01,627 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] [2019-10-13 21:15:01,628 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash 102873513, now seen corresponding path program 1 times [2019-10-13 21:15:01,629 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:01,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587152354] [2019-10-13 21:15:01,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:01,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587152354] [2019-10-13 21:15:01,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:01,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:01,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339775771] [2019-10-13 21:15:01,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:01,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:01,946 INFO L87 Difference]: Start difference. First operand 465 states and 620 transitions. Second operand 3 states. [2019-10-13 21:15:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,014 INFO L93 Difference]: Finished difference Result 712 states and 934 transitions. [2019-10-13 21:15:02,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:02,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2019-10-13 21:15:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,021 INFO L225 Difference]: With dead ends: 712 [2019-10-13 21:15:02,021 INFO L226 Difference]: Without dead ends: 468 [2019-10-13 21:15:02,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-10-13 21:15:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 467. [2019-10-13 21:15:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-13 21:15:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 622 transitions. [2019-10-13 21:15:02,076 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 622 transitions. Word has length 210 [2019-10-13 21:15:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,077 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 622 transitions. [2019-10-13 21:15:02,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 622 transitions. [2019-10-13 21:15:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:15:02,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,084 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] [2019-10-13 21:15:02,085 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,085 INFO L82 PathProgramCache]: Analyzing trace with hash -617880459, now seen corresponding path program 1 times [2019-10-13 21:15:02,086 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,086 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475977895] [2019-10-13 21:15:02,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:02,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475977895] [2019-10-13 21:15:02,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:02,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744382729] [2019-10-13 21:15:02,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:02,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,264 INFO L87 Difference]: Start difference. First operand 467 states and 622 transitions. Second operand 3 states. [2019-10-13 21:15:02,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,298 INFO L93 Difference]: Finished difference Result 908 states and 1239 transitions. [2019-10-13 21:15:02,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:02,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-10-13 21:15:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,303 INFO L225 Difference]: With dead ends: 908 [2019-10-13 21:15:02,303 INFO L226 Difference]: Without dead ends: 506 [2019-10-13 21:15:02,305 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-10-13 21:15:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 505. [2019-10-13 21:15:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-13 21:15:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 688 transitions. [2019-10-13 21:15:02,335 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 688 transitions. Word has length 216 [2019-10-13 21:15:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,335 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 688 transitions. [2019-10-13 21:15:02,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 688 transitions. [2019-10-13 21:15:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:15:02,344 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,345 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] [2019-10-13 21:15:02,345 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1274420057, now seen corresponding path program 1 times [2019-10-13 21:15:02,345 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556308496] [2019-10-13 21:15:02,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:15:02,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556308496] [2019-10-13 21:15:02,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:15:02,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015106819] [2019-10-13 21:15:02,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:02,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:02,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:15:02,751 INFO L87 Difference]: Start difference. First operand 505 states and 688 transitions. Second operand 7 states. [2019-10-13 21:15:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:04,450 INFO L93 Difference]: Finished difference Result 1199 states and 1625 transitions. [2019-10-13 21:15:04,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:15:04,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2019-10-13 21:15:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:04,459 INFO L225 Difference]: With dead ends: 1199 [2019-10-13 21:15:04,459 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 21:15:04,461 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 [2019-10-13 21:15:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 21:15:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 967. [2019-10-13 21:15:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-13 21:15:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1300 transitions. [2019-10-13 21:15:04,511 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1300 transitions. Word has length 217 [2019-10-13 21:15:04,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:04,512 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1300 transitions. [2019-10-13 21:15:04,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1300 transitions. [2019-10-13 21:15:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:15:04,517 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:04,517 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] [2019-10-13 21:15:04,517 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1026929155, now seen corresponding path program 1 times [2019-10-13 21:15:04,518 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:04,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567332385] [2019-10-13 21:15:04,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:04,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:04,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:15:05,096 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567332385] [2019-10-13 21:15:05,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:05,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:15:05,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071657380] [2019-10-13 21:15:05,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:15:05,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:05,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:15:05,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:15:05,100 INFO L87 Difference]: Start difference. First operand 967 states and 1300 transitions. Second operand 24 states. [2019-10-13 21:15:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:05,768 INFO L93 Difference]: Finished difference Result 1742 states and 2368 transitions. [2019-10-13 21:15:05,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 21:15:05,769 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 218 [2019-10-13 21:15:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:05,781 INFO L225 Difference]: With dead ends: 1742 [2019-10-13 21:15:05,781 INFO L226 Difference]: Without dead ends: 1011 [2019-10-13 21:15:05,786 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 [2019-10-13 21:15:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2019-10-13 21:15:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1009. [2019-10-13 21:15:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-13 21:15:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1383 transitions. [2019-10-13 21:15:05,871 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1383 transitions. Word has length 218 [2019-10-13 21:15:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:05,876 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1383 transitions. [2019-10-13 21:15:05,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:15:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1383 transitions. [2019-10-13 21:15:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:15:05,884 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:05,884 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] [2019-10-13 21:15:05,885 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:05,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1371369681, now seen corresponding path program 1 times [2019-10-13 21:15:05,885 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:05,886 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554037538] [2019-10-13 21:15:05,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:05,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:05,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:15:06,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554037538] [2019-10-13 21:15:06,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:06,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:15:06,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491650388] [2019-10-13 21:15:06,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:15:06,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:15:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:15:06,295 INFO L87 Difference]: Start difference. First operand 1009 states and 1383 transitions. Second operand 10 states. [2019-10-13 21:15:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:06,403 INFO L93 Difference]: Finished difference Result 1571 states and 2146 transitions. [2019-10-13 21:15:06,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:06,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2019-10-13 21:15:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:06,414 INFO L225 Difference]: With dead ends: 1571 [2019-10-13 21:15:06,414 INFO L226 Difference]: Without dead ends: 1069 [2019-10-13 21:15:06,417 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 [2019-10-13 21:15:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2019-10-13 21:15:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1021. [2019-10-13 21:15:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-10-13 21:15:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1394 transitions. [2019-10-13 21:15:06,488 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1394 transitions. Word has length 222 [2019-10-13 21:15:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:06,489 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1394 transitions. [2019-10-13 21:15:06,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:15:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1394 transitions. [2019-10-13 21:15:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:15:06,498 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:06,498 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] [2019-10-13 21:15:06,499 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1192464368, now seen corresponding path program 1 times [2019-10-13 21:15:06,500 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:06,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116748979] [2019-10-13 21:15:06,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:06,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116748979] [2019-10-13 21:15:06,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340282056] [2019-10-13 21:15:06,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:07,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:07,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:07,517 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:07,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:07,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:08,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:08,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 9] total 19 [2019-10-13 21:15:08,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620474934] [2019-10-13 21:15:08,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:08,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:08,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:08,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:15:08,149 INFO L87 Difference]: Start difference. First operand 1021 states and 1394 transitions. Second operand 9 states. [2019-10-13 21:15:09,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:09,714 INFO L93 Difference]: Finished difference Result 2020 states and 2768 transitions. [2019-10-13 21:15:09,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:09,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2019-10-13 21:15:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:09,721 INFO L225 Difference]: With dead ends: 2020 [2019-10-13 21:15:09,722 INFO L226 Difference]: Without dead ends: 1035 [2019-10-13 21:15:09,726 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 [2019-10-13 21:15:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2019-10-13 21:15:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2019-10-13 21:15:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2019-10-13 21:15:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1412 transitions. [2019-10-13 21:15:09,781 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1412 transitions. Word has length 227 [2019-10-13 21:15:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:09,782 INFO L462 AbstractCegarLoop]: Abstraction has 1035 states and 1412 transitions. [2019-10-13 21:15:09,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1412 transitions. [2019-10-13 21:15:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:15:09,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:09,788 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] [2019-10-13 21:15:09,994 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:09,994 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash 890726754, now seen corresponding path program 1 times [2019-10-13 21:15:09,995 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:09,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878417784] [2019-10-13 21:15:09,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:09,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:09,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:10,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878417784] [2019-10-13 21:15:10,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414913446] [2019-10-13 21:15:10,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:10,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:10,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:11,099 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:11,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:11,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:11,443 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:11,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 15 [2019-10-13 21:15:11,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654830249] [2019-10-13 21:15:11,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:11,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:11,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:11,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:15:11,447 INFO L87 Difference]: Start difference. First operand 1035 states and 1412 transitions. Second operand 7 states. [2019-10-13 21:15:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:12,524 INFO L93 Difference]: Finished difference Result 2021 states and 2772 transitions. [2019-10-13 21:15:12,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:12,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2019-10-13 21:15:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:12,530 INFO L225 Difference]: With dead ends: 2021 [2019-10-13 21:15:12,531 INFO L226 Difference]: Without dead ends: 1037 [2019-10-13 21:15:12,534 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 [2019-10-13 21:15:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2019-10-13 21:15:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2019-10-13 21:15:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-13 21:15:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1415 transitions. [2019-10-13 21:15:12,611 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1415 transitions. Word has length 228 [2019-10-13 21:15:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:12,613 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1415 transitions. [2019-10-13 21:15:12,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1415 transitions. [2019-10-13 21:15:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 21:15:12,618 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:12,619 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] [2019-10-13 21:15:12,826 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:12,826 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:12,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1569726776, now seen corresponding path program 1 times [2019-10-13 21:15:12,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:12,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119280780] [2019-10-13 21:15:12,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:12,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:12,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:13,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119280780] [2019-10-13 21:15:13,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304419209] [2019-10-13 21:15:13,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:13,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:13,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:13,800 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:14,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:14,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:14,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:14,436 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:14,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [6] total 20 [2019-10-13 21:15:14,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895142311] [2019-10-13 21:15:14,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:14,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:14,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:14,438 INFO L87 Difference]: Start difference. First operand 1037 states and 1415 transitions. Second operand 16 states. [2019-10-13 21:15:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:15,546 INFO L93 Difference]: Finished difference Result 2025 states and 2772 transitions. [2019-10-13 21:15:15,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:15,547 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 229 [2019-10-13 21:15:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:15,553 INFO L225 Difference]: With dead ends: 2025 [2019-10-13 21:15:15,554 INFO L226 Difference]: Without dead ends: 1049 [2019-10-13 21:15:15,557 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 [2019-10-13 21:15:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-13 21:15:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2019-10-13 21:15:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2019-10-13 21:15:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1426 transitions. [2019-10-13 21:15:15,603 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1426 transitions. Word has length 229 [2019-10-13 21:15:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:15,603 INFO L462 AbstractCegarLoop]: Abstraction has 1047 states and 1426 transitions. [2019-10-13 21:15:15,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1426 transitions. [2019-10-13 21:15:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 21:15:15,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:15,609 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] [2019-10-13 21:15:15,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:15,826 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash -667059422, now seen corresponding path program 2 times [2019-10-13 21:15:15,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:15,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636860242] [2019-10-13 21:15:15,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:15:16,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636860242] [2019-10-13 21:15:16,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337057113] [2019-10-13 21:15:16,049 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:16,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:16,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:16,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:16,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:16,734 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:17,145 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:17,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6] total 18 [2019-10-13 21:15:17,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970242506] [2019-10-13 21:15:17,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:17,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:17,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:17,147 INFO L87 Difference]: Start difference. First operand 1047 states and 1426 transitions. Second operand 14 states. [2019-10-13 21:15:18,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:18,823 INFO L93 Difference]: Finished difference Result 3876 states and 5363 transitions. [2019-10-13 21:15:18,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:18,824 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 230 [2019-10-13 21:15:18,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:18,846 INFO L225 Difference]: With dead ends: 3876 [2019-10-13 21:15:18,847 INFO L226 Difference]: Without dead ends: 3193 [2019-10-13 21:15:18,851 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 [2019-10-13 21:15:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2019-10-13 21:15:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2288. [2019-10-13 21:15:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-10-13 21:15:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3175 transitions. [2019-10-13 21:15:19,063 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3175 transitions. Word has length 230 [2019-10-13 21:15:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:19,065 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 3175 transitions. [2019-10-13 21:15:19,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3175 transitions. [2019-10-13 21:15:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:15:19,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:19,076 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] [2019-10-13 21:15:19,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:19,284 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash -43623203, now seen corresponding path program 1 times [2019-10-13 21:15:19,285 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856904748] [2019-10-13 21:15:19,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:15:19,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856904748] [2019-10-13 21:15:19,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723018338] [2019-10-13 21:15:19,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:20,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:20,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:20,290 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:20,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:20,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:20,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:20,909 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:20,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [6] total 19 [2019-10-13 21:15:20,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200585522] [2019-10-13 21:15:20,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:20,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:15:20,912 INFO L87 Difference]: Start difference. First operand 2288 states and 3175 transitions. Second operand 15 states. [2019-10-13 21:15:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,490 INFO L93 Difference]: Finished difference Result 4470 states and 6226 transitions. [2019-10-13 21:15:22,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:22,493 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 231 [2019-10-13 21:15:22,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,506 INFO L225 Difference]: With dead ends: 4470 [2019-10-13 21:15:22,506 INFO L226 Difference]: Without dead ends: 2294 [2019-10-13 21:15:22,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 448 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2019-10-13 21:15:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2288. [2019-10-13 21:15:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-10-13 21:15:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3173 transitions. [2019-10-13 21:15:22,609 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3173 transitions. Word has length 231 [2019-10-13 21:15:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,609 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 3173 transitions. [2019-10-13 21:15:22,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3173 transitions. [2019-10-13 21:15:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:22,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,620 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] [2019-10-13 21:15:22,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:22,827 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,828 INFO L82 PathProgramCache]: Analyzing trace with hash -180243310, now seen corresponding path program 1 times [2019-10-13 21:15:22,829 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697199248] [2019-10-13 21:15:22,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,829 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:15:23,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697199248] [2019-10-13 21:15:23,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889243790] [2019-10-13 21:15:23,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:23,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:23,690 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:23,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:24,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:24,076 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:24,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6] total 16 [2019-10-13 21:15:24,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478916411] [2019-10-13 21:15:24,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:24,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:24,079 INFO L87 Difference]: Start difference. First operand 2288 states and 3173 transitions. Second operand 12 states. [2019-10-13 21:15:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:25,234 INFO L93 Difference]: Finished difference Result 4023 states and 5536 transitions. [2019-10-13 21:15:25,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:25,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 232 [2019-10-13 21:15:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:25,246 INFO L225 Difference]: With dead ends: 4023 [2019-10-13 21:15:25,246 INFO L226 Difference]: Without dead ends: 2077 [2019-10-13 21:15:25,253 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 [2019-10-13 21:15:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2019-10-13 21:15:25,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2077. [2019-10-13 21:15:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-13 21:15:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2841 transitions. [2019-10-13 21:15:25,342 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2841 transitions. Word has length 232 [2019-10-13 21:15:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:25,342 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 2841 transitions. [2019-10-13 21:15:25,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2841 transitions. [2019-10-13 21:15:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:15:25,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:25,349 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] [2019-10-13 21:15:25,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:25,561 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:25,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:25,561 INFO L82 PathProgramCache]: Analyzing trace with hash 653155757, now seen corresponding path program 1 times [2019-10-13 21:15:25,562 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:25,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278840244] [2019-10-13 21:15:25,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:25,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278840244] [2019-10-13 21:15:25,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450822055] [2019-10-13 21:15:25,697 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 [2019-10-13 21:15:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:26,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:26,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:15:26,454 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:26,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:26,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:26,862 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:26,862 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296473687] [2019-10-13 21:15:26,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:26,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:26,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:26,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:26,869 INFO L87 Difference]: Start difference. First operand 2077 states and 2841 transitions. Second operand 7 states. [2019-10-13 21:15:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:27,949 INFO L93 Difference]: Finished difference Result 3104 states and 4243 transitions. [2019-10-13 21:15:27,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:27,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2019-10-13 21:15:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:27,971 INFO L225 Difference]: With dead ends: 3104 [2019-10-13 21:15:27,971 INFO L226 Difference]: Without dead ends: 2089 [2019-10-13 21:15:27,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 455 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2019-10-13 21:15:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2077. [2019-10-13 21:15:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-13 21:15:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2839 transitions. [2019-10-13 21:15:28,068 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2839 transitions. Word has length 233 [2019-10-13 21:15:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:28,069 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 2839 transitions. [2019-10-13 21:15:28,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2839 transitions. [2019-10-13 21:15:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:15:28,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:28,076 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] [2019-10-13 21:15:28,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:28,284 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1865589076, now seen corresponding path program 2 times [2019-10-13 21:15:28,285 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:28,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856055645] [2019-10-13 21:15:28,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:28,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:28,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:15:28,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856055645] [2019-10-13 21:15:28,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940180861] [2019-10-13 21:15:28,460 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