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_spec8_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:25,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:25,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:25,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:25,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:25,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:25,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:25,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:25,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:25,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:25,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:25,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:25,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:25,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:25,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:25,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:25,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:25,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:25,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:25,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:25,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:25,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:25,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:25,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:25,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:25,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:25,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:25,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:25,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:25,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:25,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:25,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:25,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:25,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:25,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:25,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:25,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:25,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:25,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:25,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:25,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:25,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:25,089 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:25,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:25,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:25,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:25,091 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:25,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:25,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:25,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:25,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:25,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:25,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:25,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:25,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:25,094 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:25,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:25,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:25,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:25,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:25,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:25,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:25,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:25,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:25,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:25,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:25,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:25,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:25,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:25,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:25,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:25,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:25,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:25,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:25,390 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:25,390 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:25,391 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c [2019-10-13 21:18:25,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe72bfe6/558601bcb1e74769acf5933b2af477b5/FLAG597307385 [2019-10-13 21:18:26,110 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:26,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c [2019-10-13 21:18:26,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe72bfe6/558601bcb1e74769acf5933b2af477b5/FLAG597307385 [2019-10-13 21:18:26,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe72bfe6/558601bcb1e74769acf5933b2af477b5 [2019-10-13 21:18:26,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:26,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:26,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:26,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:26,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:26,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:26" (1/1) ... [2019-10-13 21:18:26,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b14516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:26, skipping insertion in model container [2019-10-13 21:18:26,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:26" (1/1) ... [2019-10-13 21:18:26,318 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:26,400 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:27,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:27,162 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:27,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:27,346 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:27,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27 WrapperNode [2019-10-13 21:18:27,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:27,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:27,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:27,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:27,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:27,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:27,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:27,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:27,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:27,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:27,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:27,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:27,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:27,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:27,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:27,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:27,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:18:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:27,602 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:27,603 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:27,604 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:27,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:27,604 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:27,604 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:27,605 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:27,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:27,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:27,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:27,605 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:27,606 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:27,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:27,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:27,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:27,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:27,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:27,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:27,607 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:27,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:27,608 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:27,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:27,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:27,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:27,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:30,075 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:30,075 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:30,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:30 BoogieIcfgContainer [2019-10-13 21:18:30,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:30,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:30,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:30,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:30,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:26" (1/3) ... [2019-10-13 21:18:30,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d06cae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:30, skipping insertion in model container [2019-10-13 21:18:30,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (2/3) ... [2019-10-13 21:18:30,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d06cae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:30, skipping insertion in model container [2019-10-13 21:18:30,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:30" (3/3) ... [2019-10-13 21:18:30,089 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product22.cil.c [2019-10-13 21:18:30,100 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:30,115 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:30,128 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:30,176 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:30,176 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:30,176 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:30,176 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:30,177 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:30,177 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:30,177 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:30,177 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states. [2019-10-13 21:18:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:18:30,241 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:30,242 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:30,244 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:30,250 INFO L82 PathProgramCache]: Analyzing trace with hash 145305660, now seen corresponding path program 1 times [2019-10-13 21:18:30,261 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:30,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997524995] [2019-10-13 21:18:30,261 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:30,262 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:30,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:30,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997524995] [2019-10-13 21:18:30,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:30,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:30,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083422209] [2019-10-13 21:18:30,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:30,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:30,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:30,833 INFO L87 Difference]: Start difference. First operand 512 states. Second operand 2 states. [2019-10-13 21:18:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:30,967 INFO L93 Difference]: Finished difference Result 755 states and 991 transitions. [2019-10-13 21:18:30,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:30,970 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:18:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:30,996 INFO L225 Difference]: With dead ends: 755 [2019-10-13 21:18:30,996 INFO L226 Difference]: Without dead ends: 489 [2019-10-13 21:18:31,003 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-13 21:18:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-13 21:18:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-13 21:18:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 647 transitions. [2019-10-13 21:18:31,098 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 647 transitions. Word has length 145 [2019-10-13 21:18:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,101 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 647 transitions. [2019-10-13 21:18:31,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 647 transitions. [2019-10-13 21:18:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:18:31,109 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,109 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:31,109 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1475603101, now seen corresponding path program 1 times [2019-10-13 21:18:31,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889906915] [2019-10-13 21:18:31,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:31,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889906915] [2019-10-13 21:18:31,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:31,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:31,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812352882] [2019-10-13 21:18:31,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:31,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:31,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:31,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,421 INFO L87 Difference]: Start difference. First operand 489 states and 647 transitions. Second operand 3 states. [2019-10-13 21:18:31,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:31,513 INFO L93 Difference]: Finished difference Result 738 states and 960 transitions. [2019-10-13 21:18:31,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:31,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:18:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:31,519 INFO L225 Difference]: With dead ends: 738 [2019-10-13 21:18:31,519 INFO L226 Difference]: Without dead ends: 492 [2019-10-13 21:18:31,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-13 21:18:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-13 21:18:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-13 21:18:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2019-10-13 21:18:31,563 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 146 [2019-10-13 21:18:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,564 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2019-10-13 21:18:31,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2019-10-13 21:18:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:18:31,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,569 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:31,569 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1631744993, now seen corresponding path program 1 times [2019-10-13 21:18:31,570 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848309462] [2019-10-13 21:18:31,570 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:31,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848309462] [2019-10-13 21:18:31,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:31,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:31,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142302007] [2019-10-13 21:18:31,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:31,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:31,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,766 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand 3 states. [2019-10-13 21:18:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:31,871 INFO L93 Difference]: Finished difference Result 960 states and 1299 transitions. [2019-10-13 21:18:31,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:31,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:18:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:31,878 INFO L225 Difference]: With dead ends: 960 [2019-10-13 21:18:31,878 INFO L226 Difference]: Without dead ends: 534 [2019-10-13 21:18:31,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-13 21:18:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-10-13 21:18:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-10-13 21:18:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 721 transitions. [2019-10-13 21:18:31,946 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 721 transitions. Word has length 158 [2019-10-13 21:18:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,947 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 721 transitions. [2019-10-13 21:18:31,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 721 transitions. [2019-10-13 21:18:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:18:31,960 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,960 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:31,961 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 34916284, now seen corresponding path program 1 times [2019-10-13 21:18:31,961 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576955231] [2019-10-13 21:18:31,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:32,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576955231] [2019-10-13 21:18:32,253 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:32,253 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620972523] [2019-10-13 21:18:32,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:32,258 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:32,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,259 INFO L87 Difference]: Start difference. First operand 533 states and 721 transitions. Second operand 3 states. [2019-10-13 21:18:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,304 INFO L93 Difference]: Finished difference Result 1083 states and 1510 transitions. [2019-10-13 21:18:32,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:18:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,311 INFO L225 Difference]: With dead ends: 1083 [2019-10-13 21:18:32,311 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:18:32,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:18:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 614. [2019-10-13 21:18:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-13 21:18:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 859 transitions. [2019-10-13 21:18:32,348 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 859 transitions. Word has length 159 [2019-10-13 21:18:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,350 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 859 transitions. [2019-10-13 21:18:32,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 859 transitions. [2019-10-13 21:18:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:18:32,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,356 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:18:32,356 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1085880483, now seen corresponding path program 1 times [2019-10-13 21:18:32,357 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468607861] [2019-10-13 21:18:32,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:32,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468607861] [2019-10-13 21:18:32,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:32,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048718533] [2019-10-13 21:18:32,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:32,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,571 INFO L87 Difference]: Start difference. First operand 614 states and 859 transitions. Second operand 3 states. [2019-10-13 21:18:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,607 INFO L93 Difference]: Finished difference Result 924 states and 1264 transitions. [2019-10-13 21:18:32,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:18:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,612 INFO L225 Difference]: With dead ends: 924 [2019-10-13 21:18:32,613 INFO L226 Difference]: Without dead ends: 680 [2019-10-13 21:18:32,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-10-13 21:18:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2019-10-13 21:18:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2019-10-13 21:18:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 947 transitions. [2019-10-13 21:18:32,655 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 947 transitions. Word has length 162 [2019-10-13 21:18:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,657 INFO L462 AbstractCegarLoop]: Abstraction has 680 states and 947 transitions. [2019-10-13 21:18:32,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 947 transitions. [2019-10-13 21:18:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-13 21:18:32,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,665 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:32,665 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1436879733, now seen corresponding path program 1 times [2019-10-13 21:18:32,666 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258423926] [2019-10-13 21:18:32,667 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,667 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:18:33,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258423926] [2019-10-13 21:18:33,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102167867] [2019-10-13 21:18:33,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:33,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:18:34,291 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:35,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:35,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:35,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:18:35,392 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:35,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:35,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692495964] [2019-10-13 21:18:35,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:35,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:35,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:35,395 INFO L87 Difference]: Start difference. First operand 680 states and 947 transitions. Second operand 9 states. [2019-10-13 21:18:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:37,412 INFO L93 Difference]: Finished difference Result 1338 states and 1874 transitions. [2019-10-13 21:18:37,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:37,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-13 21:18:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:37,418 INFO L225 Difference]: With dead ends: 1338 [2019-10-13 21:18:37,418 INFO L226 Difference]: Without dead ends: 694 [2019-10-13 21:18:37,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:37,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-10-13 21:18:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2019-10-13 21:18:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:18:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 965 transitions. [2019-10-13 21:18:37,465 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 965 transitions. Word has length 280 [2019-10-13 21:18:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:37,465 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 965 transitions. [2019-10-13 21:18:37,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 965 transitions. [2019-10-13 21:18:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 21:18:37,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:37,472 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2019-10-13 21:18:37,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:37,682 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:37,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:37,682 INFO L82 PathProgramCache]: Analyzing trace with hash -252856980, now seen corresponding path program 1 times [2019-10-13 21:18:37,683 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:37,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934343925] [2019-10-13 21:18:37,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:18:38,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934343925] [2019-10-13 21:18:38,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327338626] [2019-10-13 21:18:38,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:39,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:39,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:18:39,544 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:40,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:40,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:18:40,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:40,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:40,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346398677] [2019-10-13 21:18:40,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:40,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:40,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:40,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:40,277 INFO L87 Difference]: Start difference. First operand 694 states and 965 transitions. Second operand 7 states. [2019-10-13 21:18:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:41,673 INFO L93 Difference]: Finished difference Result 1339 states and 1880 transitions. [2019-10-13 21:18:41,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:41,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-13 21:18:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:41,679 INFO L225 Difference]: With dead ends: 1339 [2019-10-13 21:18:41,679 INFO L226 Difference]: Without dead ends: 696 [2019-10-13 21:18:41,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-13 21:18:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2019-10-13 21:18:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-13 21:18:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 968 transitions. [2019-10-13 21:18:41,721 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 968 transitions. Word has length 281 [2019-10-13 21:18:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:41,722 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 968 transitions. [2019-10-13 21:18:41,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 968 transitions. [2019-10-13 21:18:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-13 21:18:41,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:41,730 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-10-13 21:18:41,936 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:41,937 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:41,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1744330537, now seen corresponding path program 1 times [2019-10-13 21:18:41,938 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:41,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533846834] [2019-10-13 21:18:41,939 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:41,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:18:42,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533846834] [2019-10-13 21:18:42,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647350462] [2019-10-13 21:18:42,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:43,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:43,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:18:43,463 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:44,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:44,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:44,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:18:44,348 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:44,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:44,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708025432] [2019-10-13 21:18:44,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:44,350 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:44,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:44,351 INFO L87 Difference]: Start difference. First operand 696 states and 968 transitions. Second operand 16 states. [2019-10-13 21:18:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:46,894 INFO L93 Difference]: Finished difference Result 1343 states and 1878 transitions. [2019-10-13 21:18:46,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:46,895 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-13 21:18:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:46,900 INFO L225 Difference]: With dead ends: 1343 [2019-10-13 21:18:46,901 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 21:18:46,904 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:18:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 21:18:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-13 21:18:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 21:18:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 979 transitions. [2019-10-13 21:18:46,942 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 979 transitions. Word has length 282 [2019-10-13 21:18:46,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:46,942 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 979 transitions. [2019-10-13 21:18:46,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 979 transitions. [2019-10-13 21:18:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-13 21:18:46,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:46,951 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2019-10-13 21:18:47,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:47,160 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:47,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1639895400, now seen corresponding path program 2 times [2019-10-13 21:18:47,160 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:47,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584841604] [2019-10-13 21:18:47,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:47,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:47,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 21:18:47,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584841604] [2019-10-13 21:18:47,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778671851] [2019-10-13 21:18:47,695 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:48,562 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:48,562 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:48,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:48,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:18:48,811 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:49,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:49,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:18:49,554 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:49,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:18:49,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963515280] [2019-10-13 21:18:49,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:49,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:49,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:49,557 INFO L87 Difference]: Start difference. First operand 706 states and 979 transitions. Second operand 12 states. [2019-10-13 21:18:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,720 INFO L93 Difference]: Finished difference Result 1334 states and 1866 transitions. [2019-10-13 21:18:50,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:50,720 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-13 21:18:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,724 INFO L225 Difference]: With dead ends: 1334 [2019-10-13 21:18:50,724 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 21:18:50,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 21:18:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-13 21:18:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 21:18:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 978 transitions. [2019-10-13 21:18:50,758 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 978 transitions. Word has length 283 [2019-10-13 21:18:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,758 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 978 transitions. [2019-10-13 21:18:50,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 978 transitions. [2019-10-13 21:18:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-13 21:18:50,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,763 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2019-10-13 21:18:50,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:50,979 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:50,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1460952391, now seen corresponding path program 3 times [2019-10-13 21:18:50,980 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:50,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369261836] [2019-10-13 21:18:50,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:18:51,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369261836] [2019-10-13 21:18:51,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415930975] [2019-10-13 21:18:51,464 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:52,198 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:52,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:52,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:52,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:18:52,543 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:53,172 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:53,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:18:53,522 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:53,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:18:53,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684199010] [2019-10-13 21:18:53,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:53,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:53,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:53,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:53,525 INFO L87 Difference]: Start difference. First operand 706 states and 978 transitions. Second operand 15 states. [2019-10-13 21:18:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:55,339 INFO L93 Difference]: Finished difference Result 1341 states and 1873 transitions. [2019-10-13 21:18:55,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:55,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-13 21:18:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:55,343 INFO L225 Difference]: With dead ends: 1341 [2019-10-13 21:18:55,344 INFO L226 Difference]: Without dead ends: 710 [2019-10-13 21:18:55,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:18:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-10-13 21:18:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 706. [2019-10-13 21:18:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 21:18:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 977 transitions. [2019-10-13 21:18:55,378 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 977 transitions. Word has length 284 [2019-10-13 21:18:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:55,378 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 977 transitions. [2019-10-13 21:18:55,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:18:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 977 transitions. [2019-10-13 21:18:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-13 21:18:55,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:55,382 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2019-10-13 21:18:55,588 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:55,589 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:55,589 INFO L82 PathProgramCache]: Analyzing trace with hash -2142614209, now seen corresponding path program 1 times [2019-10-13 21:18:55,590 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:55,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155954535] [2019-10-13 21:18:55,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:18:55,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155954535] [2019-10-13 21:18:55,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017500757] [2019-10-13 21:18:55,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:56,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:18:56,893 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:57,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:18:57,603 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:57,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:18:57,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701089177] [2019-10-13 21:18:57,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:57,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:57,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:57,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:57,605 INFO L87 Difference]: Start difference. First operand 706 states and 977 transitions. Second operand 11 states. [2019-10-13 21:18:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:59,430 INFO L93 Difference]: Finished difference Result 1338 states and 1870 transitions. [2019-10-13 21:18:59,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:59,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2019-10-13 21:18:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:59,435 INFO L225 Difference]: With dead ends: 1338 [2019-10-13 21:18:59,436 INFO L226 Difference]: Without dead ends: 712 [2019-10-13 21:18:59,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 564 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:18:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-10-13 21:18:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 708. [2019-10-13 21:18:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-13 21:18:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 980 transitions. [2019-10-13 21:18:59,473 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 980 transitions. Word has length 285 [2019-10-13 21:18:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:59,473 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 980 transitions. [2019-10-13 21:18:59,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 980 transitions. [2019-10-13 21:18:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 21:18:59,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:59,477 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:59,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:59,693 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1002457353, now seen corresponding path program 1 times [2019-10-13 21:18:59,694 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:59,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389906488] [2019-10-13 21:18:59,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:59,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:59,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:00,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389906488] [2019-10-13 21:19:00,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625677697] [2019-10-13 21:19:00,078 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