/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:56:18,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:56:18,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:56:18,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:56:18,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:56:18,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:56:18,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:56:18,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:56:18,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:56:18,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:56:18,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:56:18,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:56:18,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:56:18,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:56:18,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:56:18,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:56:18,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:56:18,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:56:18,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:56:18,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:56:18,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:56:18,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:56:18,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:56:18,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:56:18,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:56:18,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:56:18,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:56:18,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:56:18,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:56:18,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:56:18,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:56:18,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:56:18,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:56:18,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:56:18,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:56:18,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:56:18,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:56:18,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:56:18,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:56:18,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:56:18,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:56:18,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:56:18,111 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:56:18,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:56:18,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:56:18,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:56:18,113 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:56:18,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:56:18,114 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:56:18,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:56:18,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:56:18,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:56:18,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:56:18,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:56:18,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:56:18,119 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:56:18,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:56:18,120 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:56:18,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:56:18,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:56:18,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:56:18,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:56:18,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:56:18,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:56:18,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:56:18,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:56:18,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:56:18,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:56:18,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:56:18,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:56:18,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:56:18,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:56:18,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:56:18,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:56:18,431 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:56:18,431 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:56:18,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c [2019-11-07 00:56:18,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25cd087e/1d1eb2b92bec471082f54c14a2fd7dc3/FLAG738009da2 [2019-11-07 00:56:19,179 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:56:19,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product35.cil.c [2019-11-07 00:56:19,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25cd087e/1d1eb2b92bec471082f54c14a2fd7dc3/FLAG738009da2 [2019-11-07 00:56:19,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25cd087e/1d1eb2b92bec471082f54c14a2fd7dc3 [2019-11-07 00:56:19,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:56:19,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:56:19,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:19,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:56:19,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:56:19,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:19" (1/1) ... [2019-11-07 00:56:19,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470412fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19, skipping insertion in model container [2019-11-07 00:56:19,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:19" (1/1) ... [2019-11-07 00:56:19,399 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:56:19,481 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:56:20,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:20,343 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:56:20,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:20,627 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:56:20,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20 WrapperNode [2019-11-07 00:56:20,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:20,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:56:20,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:56:20,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:56:20,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... [2019-11-07 00:56:20,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:56:20,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:56:20,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:56:20,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:56:20,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:56:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:56:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:56:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:56:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:56:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:56:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:56:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:56:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:56:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:56:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:56:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:56:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:56:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:56:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:56:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:56:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:56:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:56:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:56:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:56:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:56:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:56:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:56:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:56:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:56:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:56:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:56:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:56:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:56:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:56:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:56:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:56:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:56:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:56:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:56:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:56:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:56:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:56:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:56:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:56:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:56:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:56:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:56:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:56:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:56:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:56:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:56:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:56:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:56:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:56:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:56:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:56:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:56:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:56:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:56:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:56:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:56:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:56:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:56:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:56:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:56:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:56:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:56:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:56:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:56:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:56:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:56:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:56:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:56:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:56:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:56:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:56:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:56:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:56:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:56:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:56:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:56:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:56:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:56:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:56:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:56:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:56:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:56:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:56:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:56:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:56:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:56:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:56:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:56:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:56:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:56:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:56:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:56:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:56:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:56:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:56:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:56:20,936 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:56:20,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:56:20,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:56:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:56:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:56:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:56:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:56:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:56:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:56:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:56:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:56:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:56:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:56:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:56:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:56:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:56:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:56:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:56:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:56:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:56:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:56:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:56:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:56:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:56:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:56:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:56:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:56:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:56:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:56:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:56:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:56:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:56:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:56:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:56:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:56:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:56:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:56:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:56:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:56:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:56:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:56:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:56:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:56:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:56:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:56:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:56:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:56:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:56:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:56:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:56:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:56:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:56:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:56:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:56:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:56:23,179 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:56:23,180 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:56:23,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:23 BoogieIcfgContainer [2019-11-07 00:56:23,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:56:23,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:56:23,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:56:23,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:56:23,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:19" (1/3) ... [2019-11-07 00:56:23,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116018f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:23, skipping insertion in model container [2019-11-07 00:56:23,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:20" (2/3) ... [2019-11-07 00:56:23,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116018f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:23, skipping insertion in model container [2019-11-07 00:56:23,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:23" (3/3) ... [2019-11-07 00:56:23,196 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2019-11-07 00:56:23,208 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:56:23,225 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:56:23,236 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:56:23,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:56:23,280 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:56:23,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:56:23,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:56:23,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:56:23,281 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:56:23,281 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:56:23,281 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:56:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states. [2019-11-07 00:56:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:56:23,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:23,361 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:23,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:23,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:23,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2049044822, now seen corresponding path program 1 times [2019-11-07 00:56:23,381 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:23,381 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018363489] [2019-11-07 00:56:23,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:24,136 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018363489] [2019-11-07 00:56:24,137 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:24,137 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:56:24,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128531602] [2019-11-07 00:56:24,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:56:24,146 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:24,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:56:24,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:56:24,164 INFO L87 Difference]: Start difference. First operand 687 states. Second operand 2 states. [2019-11-07 00:56:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:24,276 INFO L93 Difference]: Finished difference Result 1049 states and 1409 transitions. [2019-11-07 00:56:24,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:56:24,277 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-11-07 00:56:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:24,319 INFO L225 Difference]: With dead ends: 1049 [2019-11-07 00:56:24,319 INFO L226 Difference]: Without dead ends: 658 [2019-11-07 00:56:24,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:56:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-11-07 00:56:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2019-11-07 00:56:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-11-07 00:56:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 890 transitions. [2019-11-07 00:56:24,460 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 890 transitions. Word has length 167 [2019-11-07 00:56:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:24,462 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 890 transitions. [2019-11-07 00:56:24,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:56:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 890 transitions. [2019-11-07 00:56:24,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:56:24,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:24,469 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:24,469 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:24,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1717757499, now seen corresponding path program 1 times [2019-11-07 00:56:24,470 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:24,470 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678472117] [2019-11-07 00:56:24,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:24,759 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678472117] [2019-11-07 00:56:24,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:24,760 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:24,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88630675] [2019-11-07 00:56:24,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:24,770 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:24,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:24,777 INFO L87 Difference]: Start difference. First operand 658 states and 890 transitions. Second operand 3 states. [2019-11-07 00:56:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:24,854 INFO L93 Difference]: Finished difference Result 1032 states and 1374 transitions. [2019-11-07 00:56:24,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:24,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:56:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:24,860 INFO L225 Difference]: With dead ends: 1032 [2019-11-07 00:56:24,861 INFO L226 Difference]: Without dead ends: 661 [2019-11-07 00:56:24,863 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-11-07 00:56:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 660. [2019-11-07 00:56:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-11-07 00:56:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 892 transitions. [2019-11-07 00:56:24,907 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 892 transitions. Word has length 168 [2019-11-07 00:56:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:24,908 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 892 transitions. [2019-11-07 00:56:24,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 892 transitions. [2019-11-07 00:56:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:56:24,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:24,916 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:24,916 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2093739956, now seen corresponding path program 1 times [2019-11-07 00:56:24,917 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:24,917 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930346614] [2019-11-07 00:56:24,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:25,135 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930346614] [2019-11-07 00:56:25,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:25,136 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:25,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410430018] [2019-11-07 00:56:25,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:25,140 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:25,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:25,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:25,141 INFO L87 Difference]: Start difference. First operand 660 states and 892 transitions. Second operand 3 states. [2019-11-07 00:56:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:25,216 INFO L93 Difference]: Finished difference Result 1300 states and 1788 transitions. [2019-11-07 00:56:25,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:25,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:56:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:25,227 INFO L225 Difference]: With dead ends: 1300 [2019-11-07 00:56:25,227 INFO L226 Difference]: Without dead ends: 705 [2019-11-07 00:56:25,230 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-11-07 00:56:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-11-07 00:56:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-11-07 00:56:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 967 transitions. [2019-11-07 00:56:25,296 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 967 transitions. Word has length 180 [2019-11-07 00:56:25,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:25,298 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 967 transitions. [2019-11-07 00:56:25,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 967 transitions. [2019-11-07 00:56:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:56:25,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:25,311 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:25,312 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1917860483, now seen corresponding path program 1 times [2019-11-07 00:56:25,313 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:25,314 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930420559] [2019-11-07 00:56:25,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:25,640 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930420559] [2019-11-07 00:56:25,641 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:25,641 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:25,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176440382] [2019-11-07 00:56:25,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:25,642 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:25,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:25,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:25,643 INFO L87 Difference]: Start difference. First operand 704 states and 967 transitions. Second operand 3 states. [2019-11-07 00:56:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:25,680 INFO L93 Difference]: Finished difference Result 1429 states and 2008 transitions. [2019-11-07 00:56:25,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:25,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-11-07 00:56:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:25,686 INFO L225 Difference]: With dead ends: 1429 [2019-11-07 00:56:25,686 INFO L226 Difference]: Without dead ends: 790 [2019-11-07 00:56:25,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-11-07 00:56:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 789. [2019-11-07 00:56:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-11-07 00:56:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1111 transitions. [2019-11-07 00:56:25,719 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1111 transitions. Word has length 181 [2019-11-07 00:56:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:25,720 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1111 transitions. [2019-11-07 00:56:25,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1111 transitions. [2019-11-07 00:56:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:56:25,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:25,724 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:25,724 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:25,724 INFO L82 PathProgramCache]: Analyzing trace with hash 556295988, now seen corresponding path program 1 times [2019-11-07 00:56:25,725 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:25,725 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811195754] [2019-11-07 00:56:25,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:25,880 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811195754] [2019-11-07 00:56:25,880 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:25,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:25,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955092402] [2019-11-07 00:56:25,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:25,881 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:25,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:25,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:25,882 INFO L87 Difference]: Start difference. First operand 789 states and 1111 transitions. Second operand 3 states. [2019-11-07 00:56:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:25,926 INFO L93 Difference]: Finished difference Result 1678 states and 2430 transitions. [2019-11-07 00:56:25,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:25,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-11-07 00:56:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:25,933 INFO L225 Difference]: With dead ends: 1678 [2019-11-07 00:56:25,934 INFO L226 Difference]: Without dead ends: 954 [2019-11-07 00:56:25,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2019-11-07 00:56:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2019-11-07 00:56:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-11-07 00:56:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1387 transitions. [2019-11-07 00:56:25,978 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1387 transitions. Word has length 182 [2019-11-07 00:56:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:25,978 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1387 transitions. [2019-11-07 00:56:25,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1387 transitions. [2019-11-07 00:56:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-11-07 00:56:25,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:25,984 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:25,984 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash -398508003, now seen corresponding path program 1 times [2019-11-07 00:56:25,985 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:25,985 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542106802] [2019-11-07 00:56:25,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:56:26,261 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542106802] [2019-11-07 00:56:26,263 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:26,263 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:26,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871809107] [2019-11-07 00:56:26,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:26,264 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:26,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:26,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:26,265 INFO L87 Difference]: Start difference. First operand 953 states and 1387 transitions. Second operand 3 states. [2019-11-07 00:56:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:26,332 INFO L93 Difference]: Finished difference Result 1452 states and 2059 transitions. [2019-11-07 00:56:26,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:26,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-11-07 00:56:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:26,344 INFO L225 Difference]: With dead ends: 1452 [2019-11-07 00:56:26,344 INFO L226 Difference]: Without dead ends: 1094 [2019-11-07 00:56:26,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2019-11-07 00:56:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1093. [2019-11-07 00:56:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2019-11-07 00:56:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1584 transitions. [2019-11-07 00:56:26,424 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1584 transitions. Word has length 184 [2019-11-07 00:56:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:26,426 INFO L462 AbstractCegarLoop]: Abstraction has 1093 states and 1584 transitions. [2019-11-07 00:56:26,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1584 transitions. [2019-11-07 00:56:26,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-11-07 00:56:26,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:26,438 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:26,438 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash -167553219, now seen corresponding path program 1 times [2019-11-07 00:56:26,439 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:26,440 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640643429] [2019-11-07 00:56:26,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:56:26,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640643429] [2019-11-07 00:56:26,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:26,905 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:56:26,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293260293] [2019-11-07 00:56:26,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:56:26,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:26,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:56:26,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:56:26,907 INFO L87 Difference]: Start difference. First operand 1093 states and 1584 transitions. Second operand 6 states. [2019-11-07 00:56:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:27,832 INFO L93 Difference]: Finished difference Result 2597 states and 3733 transitions. [2019-11-07 00:56:27,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:56:27,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2019-11-07 00:56:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:27,849 INFO L225 Difference]: With dead ends: 2597 [2019-11-07 00:56:27,850 INFO L226 Difference]: Without dead ends: 2137 [2019-11-07 00:56:27,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:56:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2019-11-07 00:56:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2126. [2019-11-07 00:56:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2019-11-07 00:56:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3110 transitions. [2019-11-07 00:56:28,006 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3110 transitions. Word has length 340 [2019-11-07 00:56:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:28,009 INFO L462 AbstractCegarLoop]: Abstraction has 2126 states and 3110 transitions. [2019-11-07 00:56:28,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:56:28,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3110 transitions. [2019-11-07 00:56:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-11-07 00:56:28,028 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:28,029 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:28,029 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1752113541, now seen corresponding path program 1 times [2019-11-07 00:56:28,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:28,031 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513447684] [2019-11-07 00:56:28,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:56:28,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513447684] [2019-11-07 00:56:28,431 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:28,432 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:56:28,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067020746] [2019-11-07 00:56:28,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:56:28,433 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:28,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:56:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:56:28,434 INFO L87 Difference]: Start difference. First operand 2126 states and 3110 transitions. Second operand 11 states. [2019-11-07 00:56:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:29,037 INFO L93 Difference]: Finished difference Result 3043 states and 4319 transitions. [2019-11-07 00:56:29,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:56:29,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2019-11-07 00:56:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:29,062 INFO L225 Difference]: With dead ends: 3043 [2019-11-07 00:56:29,063 INFO L226 Difference]: Without dead ends: 2100 [2019-11-07 00:56:29,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:56:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-11-07 00:56:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2096. [2019-11-07 00:56:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2019-11-07 00:56:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3059 transitions. [2019-11-07 00:56:29,257 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3059 transitions. Word has length 341 [2019-11-07 00:56:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:29,260 INFO L462 AbstractCegarLoop]: Abstraction has 2096 states and 3059 transitions. [2019-11-07 00:56:29,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:56:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3059 transitions. [2019-11-07 00:56:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2019-11-07 00:56:29,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:29,289 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:29,290 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1458259163, now seen corresponding path program 1 times [2019-11-07 00:56:29,291 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:29,291 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282981460] [2019-11-07 00:56:29,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-07 00:56:29,610 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282981460] [2019-11-07 00:56:29,611 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:29,611 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:29,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096668448] [2019-11-07 00:56:29,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:29,612 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:29,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:29,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:29,613 INFO L87 Difference]: Start difference. First operand 2096 states and 3059 transitions. Second operand 3 states. [2019-11-07 00:56:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:29,749 INFO L93 Difference]: Finished difference Result 4761 states and 7127 transitions. [2019-11-07 00:56:29,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:29,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 366 [2019-11-07 00:56:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:29,775 INFO L225 Difference]: With dead ends: 4761 [2019-11-07 00:56:29,775 INFO L226 Difference]: Without dead ends: 2730 [2019-11-07 00:56:29,783 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2019-11-07 00:56:29,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2728. [2019-11-07 00:56:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2728 states. [2019-11-07 00:56:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 4123 transitions. [2019-11-07 00:56:29,954 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 4123 transitions. Word has length 366 [2019-11-07 00:56:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:29,954 INFO L462 AbstractCegarLoop]: Abstraction has 2728 states and 4123 transitions. [2019-11-07 00:56:29,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:29,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 4123 transitions. [2019-11-07 00:56:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2019-11-07 00:56:29,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:29,977 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:29,977 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:29,978 INFO L82 PathProgramCache]: Analyzing trace with hash 512040051, now seen corresponding path program 1 times [2019-11-07 00:56:29,978 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:29,978 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589022650] [2019-11-07 00:56:29,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-11-07 00:56:30,547 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589022650] [2019-11-07 00:56:30,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:30,548 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:30,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158424762] [2019-11-07 00:56:30,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:30,549 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:30,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:30,550 INFO L87 Difference]: Start difference. First operand 2728 states and 4123 transitions. Second operand 3 states. [2019-11-07 00:56:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:30,718 INFO L93 Difference]: Finished difference Result 6609 states and 10239 transitions. [2019-11-07 00:56:30,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:30,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 382 [2019-11-07 00:56:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:30,745 INFO L225 Difference]: With dead ends: 6609 [2019-11-07 00:56:30,745 INFO L226 Difference]: Without dead ends: 3946 [2019-11-07 00:56:30,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2019-11-07 00:56:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3944. [2019-11-07 00:56:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3944 states. [2019-11-07 00:56:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 6155 transitions. [2019-11-07 00:56:30,977 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 6155 transitions. Word has length 382 [2019-11-07 00:56:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:30,978 INFO L462 AbstractCegarLoop]: Abstraction has 3944 states and 6155 transitions. [2019-11-07 00:56:30,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 6155 transitions. [2019-11-07 00:56:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2019-11-07 00:56:31,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:31,002 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:31,002 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash 295157851, now seen corresponding path program 1 times [2019-11-07 00:56:31,003 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:31,003 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918663025] [2019-11-07 00:56:31,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-07 00:56:31,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918663025] [2019-11-07 00:56:31,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:31,356 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:31,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64905386] [2019-11-07 00:56:31,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:31,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:31,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:31,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:31,358 INFO L87 Difference]: Start difference. First operand 3944 states and 6155 transitions. Second operand 3 states. [2019-11-07 00:56:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:31,616 INFO L93 Difference]: Finished difference Result 10161 states and 16175 transitions. [2019-11-07 00:56:31,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:31,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 368 [2019-11-07 00:56:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:31,658 INFO L225 Difference]: With dead ends: 10161 [2019-11-07 00:56:31,658 INFO L226 Difference]: Without dead ends: 6282 [2019-11-07 00:56:31,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2019-11-07 00:56:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6280. [2019-11-07 00:56:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6280 states. [2019-11-07 00:56:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 10027 transitions. [2019-11-07 00:56:32,094 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 10027 transitions. Word has length 368 [2019-11-07 00:56:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:32,095 INFO L462 AbstractCegarLoop]: Abstraction has 6280 states and 10027 transitions. [2019-11-07 00:56:32,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 10027 transitions. [2019-11-07 00:56:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2019-11-07 00:56:32,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:32,138 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:32,138 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash 2012869939, now seen corresponding path program 1 times [2019-11-07 00:56:32,139 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:32,139 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308878278] [2019-11-07 00:56:32,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-11-07 00:56:32,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308878278] [2019-11-07 00:56:32,453 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:32,453 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:32,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687058794] [2019-11-07 00:56:32,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:32,455 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:32,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:32,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:32,455 INFO L87 Difference]: Start difference. First operand 6280 states and 10027 transitions. Second operand 3 states. [2019-11-07 00:56:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:32,841 INFO L93 Difference]: Finished difference Result 16977 states and 27471 transitions. [2019-11-07 00:56:32,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:32,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 384 [2019-11-07 00:56:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:32,915 INFO L225 Difference]: With dead ends: 16977 [2019-11-07 00:56:32,915 INFO L226 Difference]: Without dead ends: 10762 [2019-11-07 00:56:32,942 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2019-11-07 00:56:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10760. [2019-11-07 00:56:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10760 states. [2019-11-07 00:56:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 17387 transitions. [2019-11-07 00:56:33,559 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 17387 transitions. Word has length 384 [2019-11-07 00:56:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:33,561 INFO L462 AbstractCegarLoop]: Abstraction has 10760 states and 17387 transitions. [2019-11-07 00:56:33,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 17387 transitions. [2019-11-07 00:56:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2019-11-07 00:56:33,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:33,644 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:33,644 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:33,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1047746023, now seen corresponding path program 1 times [2019-11-07 00:56:33,645 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:33,646 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804362113] [2019-11-07 00:56:33,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:56:34,407 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804362113] [2019-11-07 00:56:34,408 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094043411] [2019-11-07 00:56:34,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:35,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 3986 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:35,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:56:35,893 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:36,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:36,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:36,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:56:37,320 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:37,321 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:56:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094427771] [2019-11-07 00:56:37,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:56:37,323 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:37,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:56:37,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:37,324 INFO L87 Difference]: Start difference. First operand 10760 states and 17387 transitions. Second operand 9 states. [2019-11-07 00:56:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:39,926 INFO L93 Difference]: Finished difference Result 21498 states and 34754 transitions. [2019-11-07 00:56:39,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:56:39,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2019-11-07 00:56:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:39,968 INFO L225 Difference]: With dead ends: 21498 [2019-11-07 00:56:39,969 INFO L226 Difference]: Without dead ends: 10774 [2019-11-07 00:56:40,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 687 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:56:40,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2019-11-07 00:56:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10774. [2019-11-07 00:56:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10774 states. [2019-11-07 00:56:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 17405 transitions. [2019-11-07 00:56:40,601 INFO L78 Accepts]: Start accepts. Automaton has 10774 states and 17405 transitions. Word has length 349 [2019-11-07 00:56:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:40,602 INFO L462 AbstractCegarLoop]: Abstraction has 10774 states and 17405 transitions. [2019-11-07 00:56:40,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:56:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 10774 states and 17405 transitions. [2019-11-07 00:56:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2019-11-07 00:56:40,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:40,667 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:40,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:40,883 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:40,883 INFO L82 PathProgramCache]: Analyzing trace with hash -483255879, now seen corresponding path program 1 times [2019-11-07 00:56:40,884 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:40,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158401790] [2019-11-07 00:56:40,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:56:41,557 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158401790] [2019-11-07 00:56:41,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424841014] [2019-11-07 00:56:41,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:42,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 3987 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:42,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:56:42,912 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:43,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:43,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:56:43,785 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:43,785 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:56:43,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606463712] [2019-11-07 00:56:43,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:56:43,787 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:43,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:56:43,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:43,788 INFO L87 Difference]: Start difference. First operand 10774 states and 17405 transitions. Second operand 7 states. [2019-11-07 00:56:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:46,193 INFO L93 Difference]: Finished difference Result 21501 states and 34887 transitions. [2019-11-07 00:56:46,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:56:46,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2019-11-07 00:56:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:46,234 INFO L225 Difference]: With dead ends: 21501 [2019-11-07 00:56:46,235 INFO L226 Difference]: Without dead ends: 10778 [2019-11-07 00:56:46,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 694 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:56:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10778 states. [2019-11-07 00:56:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10778 to 10778. [2019-11-07 00:56:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10778 states. [2019-11-07 00:56:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10778 states to 10778 states and 17410 transitions. [2019-11-07 00:56:46,795 INFO L78 Accepts]: Start accepts. Automaton has 10778 states and 17410 transitions. Word has length 350 [2019-11-07 00:56:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:46,795 INFO L462 AbstractCegarLoop]: Abstraction has 10778 states and 17410 transitions. [2019-11-07 00:56:46,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:56:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 10778 states and 17410 transitions. [2019-11-07 00:56:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-11-07 00:56:46,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:46,870 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:47,086 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:47,087 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:47,088 INFO L82 PathProgramCache]: Analyzing trace with hash 402233978, now seen corresponding path program 1 times [2019-11-07 00:56:47,088 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:47,088 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081488809] [2019-11-07 00:56:47,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:56:47,576 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081488809] [2019-11-07 00:56:47,577 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687616497] [2019-11-07 00:56:47,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:48,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 3988 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:48,441 INFO L279 TraceCheckSpWp]: Computing forward predicates...