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_spec3_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:55,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:55,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:55,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:55,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:55,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:55,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:55,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:55,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:55,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:55,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:55,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:55,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:55,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:55,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:55,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:55,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:55,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:55,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:55,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:55,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:55,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:55,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:55,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:55,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:55,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:55,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:55,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:55,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:55,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:55,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:55,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:55,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:55,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:55,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:55,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:55,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:55,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:55,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:55,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:55,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:55,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:55,105 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:55,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:55,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:55,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:55,108 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:55,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:55,109 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:55,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:55,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:55,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:55,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:55,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:55,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:55,111 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:55,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:55,112 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:55,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:55,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:55,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:55,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:55,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:55,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:55,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:55,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:55,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:55,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:55,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:55,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:55,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:55,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:55,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:55,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:55,426 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:55,427 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:55,427 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-10-13 21:15:55,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529a3445b/eaae298528534cd185d44d01554475da/FLAG671f97a78 [2019-10-13 21:15:56,224 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:56,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-10-13 21:15:56,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529a3445b/eaae298528534cd185d44d01554475da/FLAG671f97a78 [2019-10-13 21:15:56,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529a3445b/eaae298528534cd185d44d01554475da [2019-10-13 21:15:56,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:56,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:56,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:56,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:56,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:56,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:56" (1/1) ... [2019-10-13 21:15:56,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339cab54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:56, skipping insertion in model container [2019-10-13 21:15:56,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:56" (1/1) ... [2019-10-13 21:15:56,428 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:56,507 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:57,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:57,387 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:57,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:57,635 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:57,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57 WrapperNode [2019-10-13 21:15:57,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:57,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:57,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:57,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:57,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... [2019-10-13 21:15:57,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:57,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:57,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:57,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:57,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:57,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:57,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:57,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:57,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:57,965 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:57,966 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:57,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:57,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:57,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:57,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:57,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:57,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:57,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:57,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:57,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:57,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:57,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:57,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:57,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:57,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:57,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:57,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:57,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:57,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:57,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:57,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:57,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:57,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:57,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:57,976 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:57,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:57,979 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:57,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:57,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:57,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:57,981 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:57,982 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:57,983 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:57,984 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:57,985 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:57,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:57,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:57,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:58,014 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:58,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:00,280 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:00,280 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:00,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:00 BoogieIcfgContainer [2019-10-13 21:16:00,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:00,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:00,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:00,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:00,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:56" (1/3) ... [2019-10-13 21:16:00,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645bd0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:00, skipping insertion in model container [2019-10-13 21:16:00,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:57" (2/3) ... [2019-10-13 21:16:00,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645bd0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:00, skipping insertion in model container [2019-10-13 21:16:00,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:00" (3/3) ... [2019-10-13 21:16:00,302 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.c [2019-10-13 21:16:00,314 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:00,332 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:00,346 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:00,397 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:00,397 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:00,397 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:00,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:00,397 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:00,398 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:00,398 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:00,398 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-10-13 21:16:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:16:00,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,471 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:00,475 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,482 INFO L82 PathProgramCache]: Analyzing trace with hash -420941133, now seen corresponding path program 1 times [2019-10-13 21:16:00,490 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472697402] [2019-10-13 21:16:00,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:01,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472697402] [2019-10-13 21:16:01,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:01,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:01,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514171391] [2019-10-13 21:16:01,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:01,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:01,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:01,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:01,183 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 2 states. [2019-10-13 21:16:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:01,283 INFO L93 Difference]: Finished difference Result 935 states and 1233 transitions. [2019-10-13 21:16:01,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:01,284 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-13 21:16:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:01,308 INFO L225 Difference]: With dead ends: 935 [2019-10-13 21:16:01,308 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 21:16:01,318 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 21:16:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-10-13 21:16:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-13 21:16:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 765 transitions. [2019-10-13 21:16:01,415 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 765 transitions. Word has length 195 [2019-10-13 21:16:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:01,418 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 765 transitions. [2019-10-13 21:16:01,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 765 transitions. [2019-10-13 21:16:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:16:01,423 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:01,424 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:01,424 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:01,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1855300541, now seen corresponding path program 1 times [2019-10-13 21:16:01,425 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:01,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418048078] [2019-10-13 21:16:01,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:01,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418048078] [2019-10-13 21:16:01,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:01,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:01,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264383300] [2019-10-13 21:16:01,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:01,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:01,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:01,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:01,744 INFO L87 Difference]: Start difference. First operand 579 states and 765 transitions. Second operand 3 states. [2019-10-13 21:16:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:01,829 INFO L93 Difference]: Finished difference Result 918 states and 1196 transitions. [2019-10-13 21:16:01,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:01,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 21:16:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:01,836 INFO L225 Difference]: With dead ends: 918 [2019-10-13 21:16:01,837 INFO L226 Difference]: Without dead ends: 582 [2019-10-13 21:16:01,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-10-13 21:16:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-10-13 21:16:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-10-13 21:16:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 767 transitions. [2019-10-13 21:16:01,897 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 767 transitions. Word has length 196 [2019-10-13 21:16:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:01,898 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 767 transitions. [2019-10-13 21:16:01,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 767 transitions. [2019-10-13 21:16:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-13 21:16:01,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:01,903 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:01,903 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2077671956, now seen corresponding path program 1 times [2019-10-13 21:16:01,904 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:01,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333259810] [2019-10-13 21:16:01,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:01,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:02,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333259810] [2019-10-13 21:16:02,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:02,105 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:02,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733828337] [2019-10-13 21:16:02,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:02,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:02,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:02,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:02,111 INFO L87 Difference]: Start difference. First operand 581 states and 767 transitions. Second operand 3 states. [2019-10-13 21:16:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:02,177 INFO L93 Difference]: Finished difference Result 1140 states and 1535 transitions. [2019-10-13 21:16:02,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:02,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-10-13 21:16:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:02,189 INFO L225 Difference]: With dead ends: 1140 [2019-10-13 21:16:02,189 INFO L226 Difference]: Without dead ends: 624 [2019-10-13 21:16:02,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-13 21:16:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 623. [2019-10-13 21:16:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:16:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 839 transitions. [2019-10-13 21:16:02,241 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 839 transitions. Word has length 208 [2019-10-13 21:16:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:02,242 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 839 transitions. [2019-10-13 21:16:02,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 839 transitions. [2019-10-13 21:16:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:16:02,249 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:02,249 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:02,249 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash -339129856, now seen corresponding path program 1 times [2019-10-13 21:16:02,252 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:02,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581653728] [2019-10-13 21:16:02,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:02,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581653728] [2019-10-13 21:16:02,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:02,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:02,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788804134] [2019-10-13 21:16:02,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:02,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:02,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:02,561 INFO L87 Difference]: Start difference. First operand 623 states and 839 transitions. Second operand 3 states. [2019-10-13 21:16:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:02,617 INFO L93 Difference]: Finished difference Result 1263 states and 1746 transitions. [2019-10-13 21:16:02,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:02,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-13 21:16:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:02,627 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:16:02,627 INFO L226 Difference]: Without dead ends: 705 [2019-10-13 21:16:02,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-10-13 21:16:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-10-13 21:16:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-13 21:16:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 977 transitions. [2019-10-13 21:16:02,681 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 977 transitions. Word has length 209 [2019-10-13 21:16:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:02,682 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 977 transitions. [2019-10-13 21:16:02,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 977 transitions. [2019-10-13 21:16:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:16:02,690 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:02,691 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:02,691 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:02,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:02,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1667814782, now seen corresponding path program 1 times [2019-10-13 21:16:02,692 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:02,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547461416] [2019-10-13 21:16:02,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,694 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:03,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547461416] [2019-10-13 21:16:03,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059494620] [2019-10-13 21:16:03,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:03,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:04,456 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:04,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:05,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:05,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:05,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:05,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:05,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866995439] [2019-10-13 21:16:05,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:05,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:05,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:05,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:05,334 INFO L87 Difference]: Start difference. First operand 704 states and 977 transitions. Second operand 9 states. [2019-10-13 21:16:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:08,124 INFO L93 Difference]: Finished difference Result 1386 states and 1934 transitions. [2019-10-13 21:16:08,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:08,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-13 21:16:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:08,130 INFO L225 Difference]: With dead ends: 1386 [2019-10-13 21:16:08,130 INFO L226 Difference]: Without dead ends: 718 [2019-10-13 21:16:08,134 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-10-13 21:16:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-10-13 21:16:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-10-13 21:16:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 995 transitions. [2019-10-13 21:16:08,171 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 995 transitions. Word has length 212 [2019-10-13 21:16:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:08,172 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 995 transitions. [2019-10-13 21:16:08,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 995 transitions. [2019-10-13 21:16:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:16:08,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:08,177 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:08,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:08,388 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2040788742, now seen corresponding path program 1 times [2019-10-13 21:16:08,389 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:08,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540312020] [2019-10-13 21:16:08,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:08,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540312020] [2019-10-13 21:16:08,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614151143] [2019-10-13 21:16:08,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:09,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:09,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:09,745 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:10,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:10,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:10,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:10,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826744901] [2019-10-13 21:16:10,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:10,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:10,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:10,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:10,305 INFO L87 Difference]: Start difference. First operand 718 states and 995 transitions. Second operand 7 states. [2019-10-13 21:16:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:11,849 INFO L93 Difference]: Finished difference Result 1387 states and 1940 transitions. [2019-10-13 21:16:11,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:11,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-10-13 21:16:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:11,855 INFO L225 Difference]: With dead ends: 1387 [2019-10-13 21:16:11,855 INFO L226 Difference]: Without dead ends: 720 [2019-10-13 21:16:11,859 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2019-10-13 21:16:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2019-10-13 21:16:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2019-10-13 21:16:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 998 transitions. [2019-10-13 21:16:11,890 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 998 transitions. Word has length 213 [2019-10-13 21:16:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:11,891 INFO L462 AbstractCegarLoop]: Abstraction has 720 states and 998 transitions. [2019-10-13 21:16:11,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 998 transitions. [2019-10-13 21:16:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:16:11,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:11,895 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:12,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:12,104 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:12,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2011673792, now seen corresponding path program 1 times [2019-10-13 21:16:12,105 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:12,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653444356] [2019-10-13 21:16:12,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:12,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:12,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:12,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653444356] [2019-10-13 21:16:12,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162487961] [2019-10-13 21:16:12,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:13,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:13,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:13,512 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:13,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:13,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:14,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:14,227 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:14,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:14,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515212388] [2019-10-13 21:16:14,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:14,229 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:14,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:14,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:14,230 INFO L87 Difference]: Start difference. First operand 720 states and 998 transitions. Second operand 16 states. [2019-10-13 21:16:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,715 INFO L93 Difference]: Finished difference Result 1391 states and 1938 transitions. [2019-10-13 21:16:16,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:16,716 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-10-13 21:16:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,721 INFO L225 Difference]: With dead ends: 1391 [2019-10-13 21:16:16,721 INFO L226 Difference]: Without dead ends: 732 [2019-10-13 21:16:16,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 417 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-13 21:16:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 730. [2019-10-13 21:16:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2019-10-13 21:16:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1009 transitions. [2019-10-13 21:16:16,759 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1009 transitions. Word has length 214 [2019-10-13 21:16:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,759 INFO L462 AbstractCegarLoop]: Abstraction has 730 states and 1009 transitions. [2019-10-13 21:16:16,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1009 transitions. [2019-10-13 21:16:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:16:16,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,764 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:16,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:16,973 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash -639100572, now seen corresponding path program 2 times [2019-10-13 21:16:16,974 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788066504] [2019-10-13 21:16:16,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:17,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788066504] [2019-10-13 21:16:17,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737391155] [2019-10-13 21:16:17,441 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:18,005 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:18,005 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:18,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:18,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:18,223 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:18,678 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:18,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:18,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523042768] [2019-10-13 21:16:18,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:18,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:18,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:18,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:18,681 INFO L87 Difference]: Start difference. First operand 730 states and 1009 transitions. Second operand 14 states. [2019-10-13 21:16:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:21,453 INFO L93 Difference]: Finished difference Result 2445 states and 3411 transitions. [2019-10-13 21:16:21,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:21,454 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-10-13 21:16:21,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:21,468 INFO L225 Difference]: With dead ends: 2445 [2019-10-13 21:16:21,468 INFO L226 Difference]: Without dead ends: 2122 [2019-10-13 21:16:21,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2019-10-13 21:16:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1750. [2019-10-13 21:16:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-13 21:16:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2507 transitions. [2019-10-13 21:16:21,570 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2507 transitions. Word has length 215 [2019-10-13 21:16:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:21,571 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2507 transitions. [2019-10-13 21:16:21,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2507 transitions. [2019-10-13 21:16:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:16:21,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:21,579 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:21,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:21,783 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:21,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1539572673, now seen corresponding path program 1 times [2019-10-13 21:16:21,784 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:21,785 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403622839] [2019-10-13 21:16:21,785 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,785 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:22,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403622839] [2019-10-13 21:16:22,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927491519] [2019-10-13 21:16:22,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:22,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:22,993 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:23,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:23,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:23,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:23,681 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:23,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:23,682 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319936804] [2019-10-13 21:16:23,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:23,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:23,683 INFO L87 Difference]: Start difference. First operand 1750 states and 2507 transitions. Second operand 15 states. [2019-10-13 21:16:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:26,300 INFO L93 Difference]: Finished difference Result 3394 states and 4890 transitions. [2019-10-13 21:16:26,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:26,301 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-10-13 21:16:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:26,312 INFO L225 Difference]: With dead ends: 3394 [2019-10-13 21:16:26,313 INFO L226 Difference]: Without dead ends: 1756 [2019-10-13 21:16:26,319 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2019-10-13 21:16:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1750. [2019-10-13 21:16:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-13 21:16:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2505 transitions. [2019-10-13 21:16:26,421 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2505 transitions. Word has length 216 [2019-10-13 21:16:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:26,424 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2505 transitions. [2019-10-13 21:16:26,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2505 transitions. [2019-10-13 21:16:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:16:26,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:26,435 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:26,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:26,645 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1302834070, now seen corresponding path program 1 times [2019-10-13 21:16:26,645 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:26,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84544858] [2019-10-13 21:16:26,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:26,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:26,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:26,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84544858] [2019-10-13 21:16:26,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887043274] [2019-10-13 21:16:26,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:27,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:27,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:27,702 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:28,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:28,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:28,181 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:28,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:28,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952423586] [2019-10-13 21:16:28,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:28,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:28,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:28,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:28,183 INFO L87 Difference]: Start difference. First operand 1750 states and 2505 transitions. Second operand 12 states. [2019-10-13 21:16:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:30,177 INFO L93 Difference]: Finished difference Result 2733 states and 3848 transitions. [2019-10-13 21:16:30,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:30,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2019-10-13 21:16:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:30,189 INFO L225 Difference]: With dead ends: 2733 [2019-10-13 21:16:30,189 INFO L226 Difference]: Without dead ends: 1432 [2019-10-13 21:16:30,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-10-13 21:16:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2019-10-13 21:16:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2019-10-13 21:16:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1997 transitions. [2019-10-13 21:16:30,295 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1997 transitions. Word has length 217 [2019-10-13 21:16:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:30,296 INFO L462 AbstractCegarLoop]: Abstraction has 1432 states and 1997 transitions. [2019-10-13 21:16:30,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:16:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1997 transitions. [2019-10-13 21:16:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:16:30,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:30,310 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:30,522 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:30,522 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:30,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1375705736, now seen corresponding path program 2 times [2019-10-13 21:16:30,524 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:30,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162109065] [2019-10-13 21:16:30,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:30,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:30,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:30,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162109065] [2019-10-13 21:16:30,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888982545] [2019-10-13 21:16:30,879 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true