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_spec9_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:08,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:08,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:08,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:08,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:08,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:08,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:08,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:08,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:08,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:08,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:08,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:08,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:08,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:08,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:08,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:08,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:08,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:08,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:08,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:08,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:08,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:08,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:08,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:08,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:08,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:08,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:08,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:08,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:08,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:08,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:08,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:08,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:08,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:08,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:08,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:08,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:08,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:08,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:08,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:08,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:08,222 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 21:19:08,238 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:08,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:08,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:08,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:08,240 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:08,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:08,241 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:08,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:08,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:08,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:08,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:08,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:08,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:08,243 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:08,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:08,244 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:08,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:08,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:08,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:08,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:08,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:08,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:08,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:08,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:08,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:08,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:08,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:08,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:08,247 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 21:19:08,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:08,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:08,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:08,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:08,557 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:08,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product30.cil.c [2019-10-13 21:19:08,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e488acb7/a58dfc6ec74a4e0591d029c3737882dc/FLAGb2ec123f5 [2019-10-13 21:19:09,295 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:09,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product30.cil.c [2019-10-13 21:19:09,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e488acb7/a58dfc6ec74a4e0591d029c3737882dc/FLAGb2ec123f5 [2019-10-13 21:19:09,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e488acb7/a58dfc6ec74a4e0591d029c3737882dc [2019-10-13 21:19:09,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:09,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:09,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:09,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:09,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:09,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:09" (1/1) ... [2019-10-13 21:19:09,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60903e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:09, skipping insertion in model container [2019-10-13 21:19:09,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:09" (1/1) ... [2019-10-13 21:19:09,532 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:09,617 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:10,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:10,456 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:10,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:10,759 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:10,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10 WrapperNode [2019-10-13 21:19:10,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:10,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:10,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:10,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:10,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:10,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:10,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:10,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:10,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:10,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:11,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (1/1) ... [2019-10-13 21:19:11,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:11,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:11,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:11,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:11,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (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 21:19:11,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:11,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:11,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:11,133 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:11,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:11,135 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:11,142 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:11,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:19:11,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:19:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:19:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:11,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:19:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:19:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:19:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:19:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:19:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:11,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:11,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:11,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:11,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:11,168 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:19:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:19:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:19:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:19:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:19:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:19:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:19:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:19:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:13,733 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:13,733 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:13,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:13 BoogieIcfgContainer [2019-10-13 21:19:13,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:13,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:13,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:13,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:13,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:09" (1/3) ... [2019-10-13 21:19:13,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@941c0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:13, skipping insertion in model container [2019-10-13 21:19:13,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:10" (2/3) ... [2019-10-13 21:19:13,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@941c0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:13, skipping insertion in model container [2019-10-13 21:19:13,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:13" (3/3) ... [2019-10-13 21:19:13,749 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product30.cil.c [2019-10-13 21:19:13,760 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:13,774 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:13,789 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:13,827 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:13,828 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:13,828 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:13,828 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:13,828 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:13,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:13,829 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:13,829 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states. [2019-10-13 21:19:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:19:13,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:13,896 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:13,898 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -702244773, now seen corresponding path program 1 times [2019-10-13 21:19:13,913 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:13,913 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172745857] [2019-10-13 21:19:13,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:13,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:14,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172745857] [2019-10-13 21:19:14,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:14,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:14,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214077422] [2019-10-13 21:19:14,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:14,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:14,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:14,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:14,610 INFO L87 Difference]: Start difference. First operand 548 states. Second operand 2 states. [2019-10-13 21:19:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:14,730 INFO L93 Difference]: Finished difference Result 782 states and 1030 transitions. [2019-10-13 21:19:14,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:14,733 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-13 21:19:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:14,763 INFO L225 Difference]: With dead ends: 782 [2019-10-13 21:19:14,768 INFO L226 Difference]: Without dead ends: 497 [2019-10-13 21:19:14,776 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 21:19:14,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2019-10-13 21:19:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2019-10-13 21:19:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2019-10-13 21:19:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 659 transitions. [2019-10-13 21:19:14,905 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 659 transitions. Word has length 158 [2019-10-13 21:19:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:14,908 INFO L462 AbstractCegarLoop]: Abstraction has 497 states and 659 transitions. [2019-10-13 21:19:14,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 659 transitions. [2019-10-13 21:19:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:19:14,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:14,916 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:14,916 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:14,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2104582375, now seen corresponding path program 1 times [2019-10-13 21:19:14,917 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:14,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174225456] [2019-10-13 21:19:14,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:14,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:15,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174225456] [2019-10-13 21:19:15,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:15,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:15,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545260512] [2019-10-13 21:19:15,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:15,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:15,131 INFO L87 Difference]: Start difference. First operand 497 states and 659 transitions. Second operand 3 states. [2019-10-13 21:19:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,220 INFO L93 Difference]: Finished difference Result 765 states and 998 transitions. [2019-10-13 21:19:15,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:15,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:19:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,228 INFO L225 Difference]: With dead ends: 765 [2019-10-13 21:19:15,230 INFO L226 Difference]: Without dead ends: 500 [2019-10-13 21:19:15,238 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 21:19:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-13 21:19:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2019-10-13 21:19:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-10-13 21:19:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 661 transitions. [2019-10-13 21:19:15,286 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 661 transitions. Word has length 159 [2019-10-13 21:19:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:15,287 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 661 transitions. [2019-10-13 21:19:15,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 661 transitions. [2019-10-13 21:19:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 21:19:15,291 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,291 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:15,292 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1792836169, now seen corresponding path program 1 times [2019-10-13 21:19:15,292 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544891784] [2019-10-13 21:19:15,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:15,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544891784] [2019-10-13 21:19:15,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:15,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:15,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136916413] [2019-10-13 21:19:15,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:15,603 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:15,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:15,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:15,604 INFO L87 Difference]: Start difference. First operand 499 states and 661 transitions. Second operand 3 states. [2019-10-13 21:19:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,652 INFO L93 Difference]: Finished difference Result 974 states and 1320 transitions. [2019-10-13 21:19:15,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:15,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-10-13 21:19:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,660 INFO L225 Difference]: With dead ends: 974 [2019-10-13 21:19:15,661 INFO L226 Difference]: Without dead ends: 540 [2019-10-13 21:19:15,663 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 21:19:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-10-13 21:19:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2019-10-13 21:19:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-13 21:19:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 730 transitions. [2019-10-13 21:19:15,703 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 730 transitions. Word has length 169 [2019-10-13 21:19:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:15,705 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 730 transitions. [2019-10-13 21:19:15,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 730 transitions. [2019-10-13 21:19:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:19:15,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,717 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:15,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2122223245, now seen corresponding path program 1 times [2019-10-13 21:19:15,720 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313837710] [2019-10-13 21:19:15,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:15,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313837710] [2019-10-13 21:19:15,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:15,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:15,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590218153] [2019-10-13 21:19:15,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:15,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:15,860 INFO L87 Difference]: Start difference. First operand 539 states and 730 transitions. Second operand 3 states. [2019-10-13 21:19:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,896 INFO L93 Difference]: Finished difference Result 1091 states and 1522 transitions. [2019-10-13 21:19:15,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:15,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-13 21:19:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,903 INFO L225 Difference]: With dead ends: 1091 [2019-10-13 21:19:15,903 INFO L226 Difference]: Without dead ends: 617 [2019-10-13 21:19:15,906 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 21:19:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-13 21:19:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 616. [2019-10-13 21:19:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-13 21:19:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 862 transitions. [2019-10-13 21:19:15,945 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 862 transitions. Word has length 170 [2019-10-13 21:19:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:15,945 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 862 transitions. [2019-10-13 21:19:15,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 862 transitions. [2019-10-13 21:19:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:19:15,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,953 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:15,954 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1471474153, now seen corresponding path program 1 times [2019-10-13 21:19:15,955 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821589460] [2019-10-13 21:19:15,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:16,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821589460] [2019-10-13 21:19:16,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:16,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:16,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390757031] [2019-10-13 21:19:16,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:16,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:16,275 INFO L87 Difference]: Start difference. First operand 616 states and 862 transitions. Second operand 3 states. [2019-10-13 21:19:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:16,335 INFO L93 Difference]: Finished difference Result 1316 states and 1908 transitions. [2019-10-13 21:19:16,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:16,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:19:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:16,347 INFO L225 Difference]: With dead ends: 1316 [2019-10-13 21:19:16,347 INFO L226 Difference]: Without dead ends: 765 [2019-10-13 21:19:16,350 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 21:19:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-13 21:19:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 764. [2019-10-13 21:19:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2019-10-13 21:19:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1114 transitions. [2019-10-13 21:19:16,394 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1114 transitions. Word has length 171 [2019-10-13 21:19:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:16,394 INFO L462 AbstractCegarLoop]: Abstraction has 764 states and 1114 transitions. [2019-10-13 21:19:16,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1114 transitions. [2019-10-13 21:19:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:19:16,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:16,400 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:16,400 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:16,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:16,400 INFO L82 PathProgramCache]: Analyzing trace with hash -388772307, now seen corresponding path program 1 times [2019-10-13 21:19:16,401 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:16,401 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423248379] [2019-10-13 21:19:16,401 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,401 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:16,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423248379] [2019-10-13 21:19:16,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:16,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:16,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797327481] [2019-10-13 21:19:16,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:16,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:16,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:16,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:16,572 INFO L87 Difference]: Start difference. First operand 764 states and 1114 transitions. Second operand 3 states. [2019-10-13 21:19:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:16,622 INFO L93 Difference]: Finished difference Result 1748 states and 2644 transitions. [2019-10-13 21:19:16,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:16,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-10-13 21:19:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:16,631 INFO L225 Difference]: With dead ends: 1748 [2019-10-13 21:19:16,631 INFO L226 Difference]: Without dead ends: 1049 [2019-10-13 21:19:16,634 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 21:19:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2019-10-13 21:19:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1048. [2019-10-13 21:19:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-10-13 21:19:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1594 transitions. [2019-10-13 21:19:16,682 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1594 transitions. Word has length 172 [2019-10-13 21:19:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:16,683 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1594 transitions. [2019-10-13 21:19:16,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1594 transitions. [2019-10-13 21:19:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:19:16,690 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:16,690 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:16,690 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1194793961, now seen corresponding path program 1 times [2019-10-13 21:19:16,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:16,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449830530] [2019-10-13 21:19:16,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:16,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449830530] [2019-10-13 21:19:16,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:16,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:16,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614977577] [2019-10-13 21:19:16,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:16,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:16,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:16,937 INFO L87 Difference]: Start difference. First operand 1048 states and 1594 transitions. Second operand 3 states. [2019-10-13 21:19:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:16,990 INFO L93 Difference]: Finished difference Result 1404 states and 2062 transitions. [2019-10-13 21:19:16,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:16,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:19:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:16,999 INFO L225 Difference]: With dead ends: 1404 [2019-10-13 21:19:16,999 INFO L226 Difference]: Without dead ends: 1141 [2019-10-13 21:19:17,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 21:19:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-10-13 21:19:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2019-10-13 21:19:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2019-10-13 21:19:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1717 transitions. [2019-10-13 21:19:17,067 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1717 transitions. Word has length 175 [2019-10-13 21:19:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:17,068 INFO L462 AbstractCegarLoop]: Abstraction has 1141 states and 1717 transitions. [2019-10-13 21:19:17,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1717 transitions. [2019-10-13 21:19:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2019-10-13 21:19:17,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,078 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:17,079 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:17,079 INFO L82 PathProgramCache]: Analyzing trace with hash 895322575, now seen corresponding path program 1 times [2019-10-13 21:19:17,080 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:17,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995091864] [2019-10-13 21:19:17,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:19:17,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995091864] [2019-10-13 21:19:17,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11053547] [2019-10-13 21:19:17,756 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 21:19:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 3523 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:18,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:18,931 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:19,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:20,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:19:20,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:20,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:20,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293452894] [2019-10-13 21:19:20,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:20,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:20,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:20,280 INFO L87 Difference]: Start difference. First operand 1141 states and 1717 transitions. Second operand 9 states. [2019-10-13 21:19:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:22,575 INFO L93 Difference]: Finished difference Result 2260 states and 3414 transitions. [2019-10-13 21:19:22,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:22,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2019-10-13 21:19:22,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:22,584 INFO L225 Difference]: With dead ends: 2260 [2019-10-13 21:19:22,584 INFO L226 Difference]: Without dead ends: 1155 [2019-10-13 21:19:22,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 625 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-10-13 21:19:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2019-10-13 21:19:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2019-10-13 21:19:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1735 transitions. [2019-10-13 21:19:22,659 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1735 transitions. Word has length 318 [2019-10-13 21:19:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:22,660 INFO L462 AbstractCegarLoop]: Abstraction has 1155 states and 1735 transitions. [2019-10-13 21:19:22,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1735 transitions. [2019-10-13 21:19:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-10-13 21:19:22,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:22,670 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:22,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:22,880 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:22,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2296163, now seen corresponding path program 1 times [2019-10-13 21:19:22,881 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:22,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586712227] [2019-10-13 21:19:22,881 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,881 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:19:23,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586712227] [2019-10-13 21:19:23,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828992718] [2019-10-13 21:19:23,425 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 21:19:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:24,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:24,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:24,556 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:25,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:25,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:19:25,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:25,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:25,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158239052] [2019-10-13 21:19:25,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:25,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:25,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:25,337 INFO L87 Difference]: Start difference. First operand 1155 states and 1735 transitions. Second operand 7 states. [2019-10-13 21:19:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:26,285 INFO L93 Difference]: Finished difference Result 2261 states and 3424 transitions. [2019-10-13 21:19:26,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:26,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2019-10-13 21:19:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:26,295 INFO L225 Difference]: With dead ends: 2261 [2019-10-13 21:19:26,295 INFO L226 Difference]: Without dead ends: 1157 [2019-10-13 21:19:26,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 632 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-10-13 21:19:26,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2019-10-13 21:19:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2019-10-13 21:19:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1738 transitions. [2019-10-13 21:19:26,370 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1738 transitions. Word has length 319 [2019-10-13 21:19:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:26,370 INFO L462 AbstractCegarLoop]: Abstraction has 1157 states and 1738 transitions. [2019-10-13 21:19:26,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1738 transitions. [2019-10-13 21:19:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-13 21:19:26,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:26,381 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:26,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:26,591 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,592 INFO L82 PathProgramCache]: Analyzing trace with hash 494009298, now seen corresponding path program 1 times [2019-10-13 21:19:26,592 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760542243] [2019-10-13 21:19:26,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:19:27,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760542243] [2019-10-13 21:19:27,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859201166] [2019-10-13 21:19:27,188 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 21:19:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:28,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:28,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:28,307 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:28,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:29,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:29,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:19:29,378 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:29,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:29,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038354676] [2019-10-13 21:19:29,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:29,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:29,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:29,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:29,382 INFO L87 Difference]: Start difference. First operand 1157 states and 1738 transitions. Second operand 16 states. [2019-10-13 21:19:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:31,285 INFO L93 Difference]: Finished difference Result 2265 states and 3418 transitions. [2019-10-13 21:19:31,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:31,285 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 320 [2019-10-13 21:19:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:31,293 INFO L225 Difference]: With dead ends: 2265 [2019-10-13 21:19:31,294 INFO L226 Difference]: Without dead ends: 1169 [2019-10-13 21:19:31,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 629 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-13 21:19:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2019-10-13 21:19:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-13 21:19:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1749 transitions. [2019-10-13 21:19:31,365 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1749 transitions. Word has length 320 [2019-10-13 21:19:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:31,365 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1749 transitions. [2019-10-13 21:19:31,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1749 transitions. [2019-10-13 21:19:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-10-13 21:19:31,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:31,376 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:31,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:31,593 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:31,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1193942196, now seen corresponding path program 2 times [2019-10-13 21:19:31,593 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:31,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061067053] [2019-10-13 21:19:31,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:31,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:31,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 21:19:32,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061067053] [2019-10-13 21:19:32,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670976434] [2019-10-13 21:19:32,119 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 21:19:32,841 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:32,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:32,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:32,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:33,069 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:33,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:33,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:33,866 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:33,867 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:33,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045364923] [2019-10-13 21:19:33,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:33,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:33,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:33,869 INFO L87 Difference]: Start difference. First operand 1167 states and 1749 transitions. Second operand 12 states. [2019-10-13 21:19:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:35,301 INFO L93 Difference]: Finished difference Result 2256 states and 3406 transitions. [2019-10-13 21:19:35,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:35,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 321 [2019-10-13 21:19:35,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:35,310 INFO L225 Difference]: With dead ends: 2256 [2019-10-13 21:19:35,310 INFO L226 Difference]: Without dead ends: 1169 [2019-10-13 21:19:35,314 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 636 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-13 21:19:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2019-10-13 21:19:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-13 21:19:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1748 transitions. [2019-10-13 21:19:35,364 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1748 transitions. Word has length 321 [2019-10-13 21:19:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:35,365 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1748 transitions. [2019-10-13 21:19:35,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1748 transitions. [2019-10-13 21:19:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-10-13 21:19:35,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:35,372 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:35,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:35,589 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1690710337, now seen corresponding path program 3 times [2019-10-13 21:19:35,590 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:35,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281039030] [2019-10-13 21:19:35,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:19:35,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281039030] [2019-10-13 21:19:35,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36970046] [2019-10-13 21:19:35,986 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:36,714 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:36,714 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:36,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:36,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:36,992 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:37,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:37,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:37,925 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:37,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:37,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725090858] [2019-10-13 21:19:37,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:37,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:37,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:37,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:37,928 INFO L87 Difference]: Start difference. First operand 1167 states and 1748 transitions. Second operand 15 states. [2019-10-13 21:19:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:39,943 INFO L93 Difference]: Finished difference Result 2263 states and 3413 transitions. [2019-10-13 21:19:39,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:39,943 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 322 [2019-10-13 21:19:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:39,950 INFO L225 Difference]: With dead ends: 2263 [2019-10-13 21:19:39,950 INFO L226 Difference]: Without dead ends: 1171 [2019-10-13 21:19:39,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 633 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-10-13 21:19:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1167. [2019-10-13 21:19:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-13 21:19:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1747 transitions. [2019-10-13 21:19:40,001 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1747 transitions. Word has length 322 [2019-10-13 21:19:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:40,001 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1747 transitions. [2019-10-13 21:19:40,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1747 transitions. [2019-10-13 21:19:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-10-13 21:19:40,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:40,008 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:40,214 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:40,215 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash 481673088, now seen corresponding path program 1 times [2019-10-13 21:19:40,215 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:40,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391154368] [2019-10-13 21:19:40,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:40,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:40,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:19:40,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391154368] [2019-10-13 21:19:40,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664658252] [2019-10-13 21:19:40,674 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 21:19:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:41,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:41,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:41,629 INFO L321 TraceCheckSpWp]: Computing backward predicates...