/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:45,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:45,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:45,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:45,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:45,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:45,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:45,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:45,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:45,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:45,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:45,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:45,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:45,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:45,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:45,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:45,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:45,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:45,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:45,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:45,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:45,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:45,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:45,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:45,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:45,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:45,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:45,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:45,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:45,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:45,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:45,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:45,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:45,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:45,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:45,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:45,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:45,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:45,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:45,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:45,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:45,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:49:45,077 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:45,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:45,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:45,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:45,079 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:45,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:45,080 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:45,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:45,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:45,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:45,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:45,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:45,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:45,081 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:45,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:45,082 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:45,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:45,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:45,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:45,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:45,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:45,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:45,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:45,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:45,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:45,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:45,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:45,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:45,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:49:45,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:45,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:45,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:45,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:45,409 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:45,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2019-11-07 00:49:45,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049756715/4a6ecf652ae645bbbcac86e4d436fd5d/FLAG6d5031a5d [2019-11-07 00:49:46,058 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:46,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2019-11-07 00:49:46,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049756715/4a6ecf652ae645bbbcac86e4d436fd5d/FLAG6d5031a5d [2019-11-07 00:49:46,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/049756715/4a6ecf652ae645bbbcac86e4d436fd5d [2019-11-07 00:49:46,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:46,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:46,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:46,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:46,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:46,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:46" (1/1) ... [2019-11-07 00:49:46,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21431e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:46, skipping insertion in model container [2019-11-07 00:49:46,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:46" (1/1) ... [2019-11-07 00:49:46,349 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:46,421 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:47,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:47,292 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:47,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:47,512 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:47,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47 WrapperNode [2019-11-07 00:49:47,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:47,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:47,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:47,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:47,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... [2019-11-07 00:49:47,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:47,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:47,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:47,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:47,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:47,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:47,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:47,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:47,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:47,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:47,772 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:47,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:47,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:47,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:47,773 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:47,774 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:47,776 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:47,777 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:47,777 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:47,777 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:47,777 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:47,778 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:47,778 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:47,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:49:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:49:47,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:49:47,780 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:49:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:47,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:47,783 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:47,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:47,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:47,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:47,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:47,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:47,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:47,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:47,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:47,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:47,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:47,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:49:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:49:47,788 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:47,788 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:47,788 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:47,788 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:49:47,789 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:47,789 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:47,789 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:47,789 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:47,789 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:47,789 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:47,790 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:47,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:47,792 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:47,793 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:47,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:47,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:47,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:47,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:47,797 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:47,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:47,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:47,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:47,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:47,820 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:47,821 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:47,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:47,823 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:47,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:47,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:47,826 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:47,827 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:47,828 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:47,830 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:49,891 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:49,891 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:49,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:49 BoogieIcfgContainer [2019-11-07 00:49:49,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:49,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:49,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:49,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:49,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:46" (1/3) ... [2019-11-07 00:49:49,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bfd20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:49, skipping insertion in model container [2019-11-07 00:49:49,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:47" (2/3) ... [2019-11-07 00:49:49,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bfd20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:49, skipping insertion in model container [2019-11-07 00:49:49,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:49" (3/3) ... [2019-11-07 00:49:49,901 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2019-11-07 00:49:49,912 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:49,921 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:49,932 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:49,970 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:49,971 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:49,971 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:49,971 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:49,971 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:49,971 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:49,971 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:49,971 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states. [2019-11-07 00:49:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:49:50,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:50,055 INFO L410 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] [2019-11-07 00:49:50,060 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash -938769841, now seen corresponding path program 1 times [2019-11-07 00:49:50,077 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:50,078 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105393918] [2019-11-07 00:49:50,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:50,696 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105393918] [2019-11-07 00:49:50,697 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:50,697 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:50,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884518321] [2019-11-07 00:49:50,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:50,706 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:50,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:50,724 INFO L87 Difference]: Start difference. First operand 511 states. Second operand 2 states. [2019-11-07 00:49:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:50,794 INFO L93 Difference]: Finished difference Result 729 states and 970 transitions. [2019-11-07 00:49:50,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:50,796 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 209 [2019-11-07 00:49:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:50,836 INFO L225 Difference]: With dead ends: 729 [2019-11-07 00:49:50,836 INFO L226 Difference]: Without dead ends: 465 [2019-11-07 00:49:50,847 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-11-07 00:49:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2019-11-07 00:49:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-11-07 00:49:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 620 transitions. [2019-11-07 00:49:50,982 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 620 transitions. Word has length 209 [2019-11-07 00:49:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:50,986 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 620 transitions. [2019-11-07 00:49:50,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 620 transitions. [2019-11-07 00:49:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-11-07 00:49:50,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:50,992 INFO L410 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] [2019-11-07 00:49:50,992 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:50,993 INFO L82 PathProgramCache]: Analyzing trace with hash 102873513, now seen corresponding path program 1 times [2019-11-07 00:49:50,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:50,993 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272827496] [2019-11-07 00:49:50,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:51,200 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272827496] [2019-11-07 00:49:51,200 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:51,201 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:51,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430574930] [2019-11-07 00:49:51,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:51,203 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:51,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:51,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:51,204 INFO L87 Difference]: Start difference. First operand 465 states and 620 transitions. Second operand 3 states. [2019-11-07 00:49:51,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:51,270 INFO L93 Difference]: Finished difference Result 712 states and 934 transitions. [2019-11-07 00:49:51,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:51,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2019-11-07 00:49:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:51,280 INFO L225 Difference]: With dead ends: 712 [2019-11-07 00:49:51,280 INFO L226 Difference]: Without dead ends: 468 [2019-11-07 00:49:51,282 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-11-07 00:49:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 467. [2019-11-07 00:49:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-11-07 00:49:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 622 transitions. [2019-11-07 00:49:51,345 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 622 transitions. Word has length 210 [2019-11-07 00:49:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:51,345 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 622 transitions. [2019-11-07 00:49:51,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 622 transitions. [2019-11-07 00:49:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-07 00:49:51,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:51,351 INFO L410 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] [2019-11-07 00:49:51,351 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash -617880459, now seen corresponding path program 1 times [2019-11-07 00:49:51,352 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:51,352 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565270261] [2019-11-07 00:49:51,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:51,569 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565270261] [2019-11-07 00:49:51,570 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:51,570 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:51,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704867735] [2019-11-07 00:49:51,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:51,572 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:51,572 INFO L87 Difference]: Start difference. First operand 467 states and 622 transitions. Second operand 3 states. [2019-11-07 00:49:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:51,613 INFO L93 Difference]: Finished difference Result 908 states and 1239 transitions. [2019-11-07 00:49:51,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:51,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2019-11-07 00:49:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:51,619 INFO L225 Difference]: With dead ends: 908 [2019-11-07 00:49:51,619 INFO L226 Difference]: Without dead ends: 506 [2019-11-07 00:49:51,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2019-11-07 00:49:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 505. [2019-11-07 00:49:51,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-11-07 00:49:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 688 transitions. [2019-11-07 00:49:51,657 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 688 transitions. Word has length 216 [2019-11-07 00:49:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:51,658 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 688 transitions. [2019-11-07 00:49:51,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 688 transitions. [2019-11-07 00:49:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-07 00:49:51,673 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:51,674 INFO L410 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] [2019-11-07 00:49:51,674 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:51,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1274420057, now seen corresponding path program 1 times [2019-11-07 00:49:51,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:51,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375429072] [2019-11-07 00:49:51,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:49:52,140 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375429072] [2019-11-07 00:49:52,140 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:52,141 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:49:52,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197115559] [2019-11-07 00:49:52,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:52,142 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:52,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:52,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:49:52,142 INFO L87 Difference]: Start difference. First operand 505 states and 688 transitions. Second operand 7 states. [2019-11-07 00:49:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:53,710 INFO L93 Difference]: Finished difference Result 1199 states and 1625 transitions. [2019-11-07 00:49:53,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:49:53,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2019-11-07 00:49:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:53,725 INFO L225 Difference]: With dead ends: 1199 [2019-11-07 00:49:53,725 INFO L226 Difference]: Without dead ends: 973 [2019-11-07 00:49:53,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:49:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-11-07 00:49:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 967. [2019-11-07 00:49:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-11-07 00:49:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1300 transitions. [2019-11-07 00:49:53,779 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1300 transitions. Word has length 217 [2019-11-07 00:49:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:53,780 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1300 transitions. [2019-11-07 00:49:53,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1300 transitions. [2019-11-07 00:49:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-11-07 00:49:53,785 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:53,786 INFO L410 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] [2019-11-07 00:49:53,786 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:53,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1026929155, now seen corresponding path program 1 times [2019-11-07 00:49:53,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:53,787 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225667091] [2019-11-07 00:49:53,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:49:54,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225667091] [2019-11-07 00:49:54,394 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:54,394 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-11-07 00:49:54,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355969415] [2019-11-07 00:49:54,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 00:49:54,396 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:54,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 00:49:54,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:49:54,397 INFO L87 Difference]: Start difference. First operand 967 states and 1300 transitions. Second operand 24 states. [2019-11-07 00:49:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:55,350 INFO L93 Difference]: Finished difference Result 1742 states and 2368 transitions. [2019-11-07 00:49:55,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-07 00:49:55,351 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 218 [2019-11-07 00:49:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:55,363 INFO L225 Difference]: With dead ends: 1742 [2019-11-07 00:49:55,363 INFO L226 Difference]: Without dead ends: 1011 [2019-11-07 00:49:55,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:49:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2019-11-07 00:49:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1009. [2019-11-07 00:49:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-11-07 00:49:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1383 transitions. [2019-11-07 00:49:55,435 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1383 transitions. Word has length 218 [2019-11-07 00:49:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:55,436 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1383 transitions. [2019-11-07 00:49:55,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-07 00:49:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1383 transitions. [2019-11-07 00:49:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-07 00:49:55,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:55,442 INFO L410 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] [2019-11-07 00:49:55,442 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:55,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1371369681, now seen corresponding path program 1 times [2019-11-07 00:49:55,443 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:55,443 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574021545] [2019-11-07 00:49:55,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:49:55,651 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574021545] [2019-11-07 00:49:55,651 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:55,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:49:55,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325432518] [2019-11-07 00:49:55,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:49:55,652 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:55,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:49:55,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:49:55,653 INFO L87 Difference]: Start difference. First operand 1009 states and 1383 transitions. Second operand 10 states. [2019-11-07 00:49:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:55,730 INFO L93 Difference]: Finished difference Result 1571 states and 2146 transitions. [2019-11-07 00:49:55,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:49:55,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2019-11-07 00:49:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:55,738 INFO L225 Difference]: With dead ends: 1571 [2019-11-07 00:49:55,738 INFO L226 Difference]: Without dead ends: 1069 [2019-11-07 00:49:55,741 INFO L630 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 [2019-11-07 00:49:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2019-11-07 00:49:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1021. [2019-11-07 00:49:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-11-07 00:49:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1394 transitions. [2019-11-07 00:49:55,787 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1394 transitions. Word has length 222 [2019-11-07 00:49:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:55,788 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1394 transitions. [2019-11-07 00:49:55,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:49:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1394 transitions. [2019-11-07 00:49:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-11-07 00:49:55,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:55,793 INFO L410 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] [2019-11-07 00:49:55,794 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1192464368, now seen corresponding path program 1 times [2019-11-07 00:49:55,794 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:55,794 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427345257] [2019-11-07 00:49:55,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:56,055 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427345257] [2019-11-07 00:49:56,056 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294770979] [2019-11-07 00:49:56,056 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 [2019-11-07 00:49:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:56,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:56,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:49:56,974 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:57,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:57,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:57,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:57,829 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:57,829 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 9] total 19 [2019-11-07 00:49:57,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694850419] [2019-11-07 00:49:57,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:49:57,831 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:57,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:49:57,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:49:57,831 INFO L87 Difference]: Start difference. First operand 1021 states and 1394 transitions. Second operand 9 states. [2019-11-07 00:49:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:59,634 INFO L93 Difference]: Finished difference Result 2020 states and 2768 transitions. [2019-11-07 00:49:59,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:49:59,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2019-11-07 00:49:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:59,642 INFO L225 Difference]: With dead ends: 2020 [2019-11-07 00:49:59,642 INFO L226 Difference]: Without dead ends: 1035 [2019-11-07 00:49:59,647 INFO L630 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 [2019-11-07 00:49:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2019-11-07 00:49:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1035. [2019-11-07 00:49:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2019-11-07 00:49:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1412 transitions. [2019-11-07 00:49:59,744 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1412 transitions. Word has length 227 [2019-11-07 00:49:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:59,745 INFO L462 AbstractCegarLoop]: Abstraction has 1035 states and 1412 transitions. [2019-11-07 00:49:59,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:49:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1412 transitions. [2019-11-07 00:49:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-11-07 00:49:59,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:59,750 INFO L410 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] [2019-11-07 00:49:59,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:59,958 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:59,959 INFO L82 PathProgramCache]: Analyzing trace with hash 890726754, now seen corresponding path program 1 times [2019-11-07 00:49:59,959 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:59,959 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556168980] [2019-11-07 00:49:59,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:00,269 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556168980] [2019-11-07 00:50:00,269 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361745606] [2019-11-07 00:50:00,269 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 [2019-11-07 00:50:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:00,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:01,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:01,195 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:01,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:01,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:01,659 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:01,659 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 15 [2019-11-07 00:50:01,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765225685] [2019-11-07 00:50:01,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:50:01,662 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:01,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:50:01,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:50:01,663 INFO L87 Difference]: Start difference. First operand 1035 states and 1412 transitions. Second operand 7 states. [2019-11-07 00:50:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:02,781 INFO L93 Difference]: Finished difference Result 2021 states and 2772 transitions. [2019-11-07 00:50:02,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:50:02,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2019-11-07 00:50:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:02,789 INFO L225 Difference]: With dead ends: 2021 [2019-11-07 00:50:02,789 INFO L226 Difference]: Without dead ends: 1037 [2019-11-07 00:50:02,795 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 447 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:50:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2019-11-07 00:50:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2019-11-07 00:50:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-11-07 00:50:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1415 transitions. [2019-11-07 00:50:02,858 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1415 transitions. Word has length 228 [2019-11-07 00:50:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:02,858 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1415 transitions. [2019-11-07 00:50:02,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:50:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1415 transitions. [2019-11-07 00:50:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-07 00:50:02,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:02,863 INFO L410 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] [2019-11-07 00:50:03,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:03,070 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:03,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1569726776, now seen corresponding path program 1 times [2019-11-07 00:50:03,071 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:03,071 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056007622] [2019-11-07 00:50:03,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:03,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056007622] [2019-11-07 00:50:03,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289197047] [2019-11-07 00:50:03,308 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 [2019-11-07 00:50:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:04,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:04,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:04,169 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:04,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:04,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:04,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:04,741 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:04,742 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [6] total 20 [2019-11-07 00:50:04,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502095914] [2019-11-07 00:50:04,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:50:04,743 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:04,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:50:04,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:50:04,744 INFO L87 Difference]: Start difference. First operand 1037 states and 1415 transitions. Second operand 16 states. [2019-11-07 00:50:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:06,040 INFO L93 Difference]: Finished difference Result 2025 states and 2772 transitions. [2019-11-07 00:50:06,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:06,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 229 [2019-11-07 00:50:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:06,051 INFO L225 Difference]: With dead ends: 2025 [2019-11-07 00:50:06,051 INFO L226 Difference]: Without dead ends: 1049 [2019-11-07 00:50:06,062 INFO L630 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 [2019-11-07 00:50:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-11-07 00:50:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2019-11-07 00:50:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2019-11-07 00:50:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1426 transitions. [2019-11-07 00:50:06,117 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1426 transitions. Word has length 229 [2019-11-07 00:50:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:06,117 INFO L462 AbstractCegarLoop]: Abstraction has 1047 states and 1426 transitions. [2019-11-07 00:50:06,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:50:06,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1426 transitions. [2019-11-07 00:50:06,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-07 00:50:06,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:06,122 INFO L410 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] [2019-11-07 00:50:06,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:06,329 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:06,330 INFO L82 PathProgramCache]: Analyzing trace with hash -667059422, now seen corresponding path program 2 times [2019-11-07 00:50:06,331 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:06,331 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517708706] [2019-11-07 00:50:06,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:50:06,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517708706] [2019-11-07 00:50:06,586 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564517511] [2019-11-07 00:50:06,586 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 [2019-11-07 00:50:07,102 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:07,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:07,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:07,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:07,238 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:07,749 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:07,749 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6] total 18 [2019-11-07 00:50:07,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595228269] [2019-11-07 00:50:07,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:07,753 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:07,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:50:07,755 INFO L87 Difference]: Start difference. First operand 1047 states and 1426 transitions. Second operand 14 states. [2019-11-07 00:50:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:09,724 INFO L93 Difference]: Finished difference Result 3876 states and 5363 transitions. [2019-11-07 00:50:09,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:09,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 230 [2019-11-07 00:50:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:09,744 INFO L225 Difference]: With dead ends: 3876 [2019-11-07 00:50:09,744 INFO L226 Difference]: Without dead ends: 3193 [2019-11-07 00:50:09,749 INFO L630 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 [2019-11-07 00:50:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2019-11-07 00:50:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2288. [2019-11-07 00:50:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-11-07 00:50:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3175 transitions. [2019-11-07 00:50:09,883 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3175 transitions. Word has length 230 [2019-11-07 00:50:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:09,884 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 3175 transitions. [2019-11-07 00:50:09,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3175 transitions. [2019-11-07 00:50:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-11-07 00:50:09,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:09,892 INFO L410 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] [2019-11-07 00:50:10,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:10,101 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash -43623203, now seen corresponding path program 1 times [2019-11-07 00:50:10,102 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:10,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58893456] [2019-11-07 00:50:10,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:50:10,299 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58893456] [2019-11-07 00:50:10,300 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572008933] [2019-11-07 00:50:10,300 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 [2019-11-07 00:50:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:10,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:10,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:11,091 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:11,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:11,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:11,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:11,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:11,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [6] total 19 [2019-11-07 00:50:11,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470248135] [2019-11-07 00:50:11,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:11,657 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:11,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:50:11,658 INFO L87 Difference]: Start difference. First operand 2288 states and 3175 transitions. Second operand 15 states. [2019-11-07 00:50:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:13,262 INFO L93 Difference]: Finished difference Result 4470 states and 6226 transitions. [2019-11-07 00:50:13,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:13,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 231 [2019-11-07 00:50:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:13,275 INFO L225 Difference]: With dead ends: 4470 [2019-11-07 00:50:13,275 INFO L226 Difference]: Without dead ends: 2294 [2019-11-07 00:50:13,283 INFO L630 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 [2019-11-07 00:50:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2019-11-07 00:50:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2288. [2019-11-07 00:50:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-11-07 00:50:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3173 transitions. [2019-11-07 00:50:13,393 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3173 transitions. Word has length 231 [2019-11-07 00:50:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:13,393 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 3173 transitions. [2019-11-07 00:50:13,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:50:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3173 transitions. [2019-11-07 00:50:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-07 00:50:13,402 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:13,403 INFO L410 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] [2019-11-07 00:50:13,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:13,619 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash -180243310, now seen corresponding path program 1 times [2019-11-07 00:50:13,620 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:13,620 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205850005] [2019-11-07 00:50:13,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:50:13,791 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205850005] [2019-11-07 00:50:13,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397372741] [2019-11-07 00:50:13,792 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 [2019-11-07 00:50:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:14,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:14,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:14,493 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:14,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:14,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:14,903 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:14,904 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6] total 16 [2019-11-07 00:50:14,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959016762] [2019-11-07 00:50:14,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:14,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:50:14,907 INFO L87 Difference]: Start difference. First operand 2288 states and 3173 transitions. Second operand 12 states. [2019-11-07 00:50:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:16,169 INFO L93 Difference]: Finished difference Result 4023 states and 5536 transitions. [2019-11-07 00:50:16,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:50:16,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 232 [2019-11-07 00:50:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:16,183 INFO L225 Difference]: With dead ends: 4023 [2019-11-07 00:50:16,183 INFO L226 Difference]: Without dead ends: 2077 [2019-11-07 00:50:16,190 INFO L630 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 [2019-11-07 00:50:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2019-11-07 00:50:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2077. [2019-11-07 00:50:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-11-07 00:50:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2841 transitions. [2019-11-07 00:50:16,287 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2841 transitions. Word has length 232 [2019-11-07 00:50:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:16,287 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 2841 transitions. [2019-11-07 00:50:16,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:50:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2841 transitions. [2019-11-07 00:50:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-11-07 00:50:16,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:16,294 INFO L410 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] [2019-11-07 00:50:16,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:16,502 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:16,503 INFO L82 PathProgramCache]: Analyzing trace with hash 653155757, now seen corresponding path program 1 times [2019-11-07 00:50:16,504 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:16,504 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488929250] [2019-11-07 00:50:16,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:50:16,643 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488929250] [2019-11-07 00:50:16,643 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50347717] [2019-11-07 00:50:16,643 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 [2019-11-07 00:50:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:17,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:17,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:50:17,378 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:17,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:17,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:50:17,946 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:17,946 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:50:17,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641889656] [2019-11-07 00:50:17,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:50:17,948 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:17,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:50:17,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:50:17,956 INFO L87 Difference]: Start difference. First operand 2077 states and 2841 transitions. Second operand 7 states. [2019-11-07 00:50:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:19,076 INFO L93 Difference]: Finished difference Result 3104 states and 4243 transitions. [2019-11-07 00:50:19,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:50:19,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2019-11-07 00:50:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:19,088 INFO L225 Difference]: With dead ends: 3104 [2019-11-07 00:50:19,088 INFO L226 Difference]: Without dead ends: 2089 [2019-11-07 00:50:19,093 INFO L630 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 [2019-11-07 00:50:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2019-11-07 00:50:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2077. [2019-11-07 00:50:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-11-07 00:50:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2839 transitions. [2019-11-07 00:50:19,185 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2839 transitions. Word has length 233 [2019-11-07 00:50:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:19,186 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 2839 transitions. [2019-11-07 00:50:19,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:50:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2839 transitions. [2019-11-07 00:50:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-11-07 00:50:19,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:19,193 INFO L410 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] [2019-11-07 00:50:19,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:19,406 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:19,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1865589076, now seen corresponding path program 2 times [2019-11-07 00:50:19,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:19,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277584893] [2019-11-07 00:50:19,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:50:19,580 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277584893] [2019-11-07 00:50:19,580 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800661849] [2019-11-07 00:50:19,580 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