/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:46:57,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:46:57,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:46:57,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:46:57,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:46:57,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:46:57,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:46:57,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:46:57,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:46:57,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:46:57,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:46:57,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:46:57,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:46:57,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:46:57,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:46:57,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:46:57,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:46:57,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:46:57,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:46:57,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:46:57,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:46:57,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:46:57,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:46:57,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:46:57,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:46:57,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:46:57,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:46:57,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:46:57,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:46:57,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:46:57,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:46:57,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:46:57,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:46:57,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:46:57,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:46:57,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:46:57,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:46:57,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:46:57,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:46:57,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:46:57,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:46:57,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:46:57,301 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:46:57,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:46:57,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:46:57,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:46:57,304 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:46:57,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:46:57,305 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:46:57,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:46:57,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:46:57,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:46:57,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:46:57,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:46:57,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:46:57,307 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:46:57,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:46:57,307 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:46:57,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:46:57,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:46:57,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:46:57,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:46:57,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:46:57,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:46:57,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:46:57,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:46:57,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:46:57,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:46:57,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:46:57,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:46:57,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:46:57,594 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:46:57,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:46:57,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:46:57,618 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:46:57,618 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:46:57,619 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-11-07 00:46:57,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62da7cb4/280e1f06e55e4a98b8ffc5b970fac292/FLAGcb9a55aa2 [2019-11-07 00:46:58,382 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:46:58,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-11-07 00:46:58,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62da7cb4/280e1f06e55e4a98b8ffc5b970fac292/FLAGcb9a55aa2 [2019-11-07 00:46:58,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62da7cb4/280e1f06e55e4a98b8ffc5b970fac292 [2019-11-07 00:46:58,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:46:58,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:46:58,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:58,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:46:58,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:46:58,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5389ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:58, skipping insertion in model container [2019-11-07 00:46:58,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:58" (1/1) ... [2019-11-07 00:46:58,569 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:46:58,658 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:46:59,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:59,469 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:46:59,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:59,668 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:46:59,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59 WrapperNode [2019-11-07 00:46:59,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:59,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:46:59,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:46:59,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:46:59,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... [2019-11-07 00:46:59,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:46:59,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:46:59,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:46:59,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:46:59,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:46:59,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:46:59,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:46:59,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:46:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-11-07 00:46:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:46:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:46:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:46:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:46:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:46:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:46:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:46:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:46:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:46:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:46:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:46:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-11-07 00:46:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:46:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:46:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:46:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:46:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:46:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:46:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:46:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:46:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:46:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:46:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:46:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:46:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:46:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:46:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:46:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:46:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:46:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:46:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:46:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:46:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:46:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:46:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:46:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:46:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:46:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:46:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:46:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:46:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:46:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:46:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:46:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:46:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:46:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:46:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:46:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:46:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:46:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:46:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:46:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:46:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:46:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:46:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:46:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:46:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:46:59,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:46:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:46:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:46:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:46:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:46:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:46:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:46:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:46:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:46:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:46:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:46:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:46:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:46:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:46:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:46:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:46:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:46:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:46:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:46:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:46:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:46:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:46:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:46:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:46:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:46:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:46:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:46:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:46:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:46:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:46:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:46:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:46:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:46:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:46:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:46:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:46:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:46:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:46:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:46:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:46:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:46:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:46:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:46:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:46:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:46:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:46:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:46:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:46:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:46:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:46:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:46:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:46:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:46:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-11-07 00:46:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:46:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:46:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:46:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:46:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:46:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:46:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:46:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:46:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:46:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:46:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:46:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:46:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:46:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:46:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:46:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:46:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:46:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:46:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:46:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:46:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:46:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:46:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:46:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:47:02,015 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:47:02,016 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:47:02,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:02 BoogieIcfgContainer [2019-11-07 00:47:02,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:47:02,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:47:02,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:47:02,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:47:02,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:46:58" (1/3) ... [2019-11-07 00:47:02,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a3cdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:02, skipping insertion in model container [2019-11-07 00:47:02,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:59" (2/3) ... [2019-11-07 00:47:02,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a3cdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:02, skipping insertion in model container [2019-11-07 00:47:02,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:02" (3/3) ... [2019-11-07 00:47:02,027 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2019-11-07 00:47:02,037 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:47:02,050 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:47:02,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:47:02,104 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:47:02,104 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:47:02,105 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:47:02,105 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:47:02,105 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:47:02,105 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:47:02,105 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:47:02,105 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:47:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states. [2019-11-07 00:47:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:47:02,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:02,182 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:02,187 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1913832913, now seen corresponding path program 1 times [2019-11-07 00:47:02,204 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:02,204 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492142092] [2019-11-07 00:47:02,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:02,957 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492142092] [2019-11-07 00:47:02,958 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:02,959 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:47:02,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242742855] [2019-11-07 00:47:02,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:47:02,977 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:02,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:47:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:02,999 INFO L87 Difference]: Start difference. First operand 505 states. Second operand 2 states. [2019-11-07 00:47:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:03,089 INFO L93 Difference]: Finished difference Result 741 states and 977 transitions. [2019-11-07 00:47:03,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:47:03,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 186 [2019-11-07 00:47:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:03,131 INFO L225 Difference]: With dead ends: 741 [2019-11-07 00:47:03,135 INFO L226 Difference]: Without dead ends: 482 [2019-11-07 00:47:03,144 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-11-07 00:47:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2019-11-07 00:47:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-11-07 00:47:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 638 transitions. [2019-11-07 00:47:03,235 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 638 transitions. Word has length 186 [2019-11-07 00:47:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:03,237 INFO L462 AbstractCegarLoop]: Abstraction has 482 states and 638 transitions. [2019-11-07 00:47:03,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:47:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 638 transitions. [2019-11-07 00:47:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:47:03,243 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:03,243 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:03,244 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash -593424949, now seen corresponding path program 1 times [2019-11-07 00:47:03,245 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:03,245 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349913629] [2019-11-07 00:47:03,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:03,547 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349913629] [2019-11-07 00:47:03,547 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:03,547 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:03,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229012682] [2019-11-07 00:47:03,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:03,561 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:03,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,568 INFO L87 Difference]: Start difference. First operand 482 states and 638 transitions. Second operand 3 states. [2019-11-07 00:47:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:03,657 INFO L93 Difference]: Finished difference Result 724 states and 942 transitions. [2019-11-07 00:47:03,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:03,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-11-07 00:47:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:03,664 INFO L225 Difference]: With dead ends: 724 [2019-11-07 00:47:03,664 INFO L226 Difference]: Without dead ends: 485 [2019-11-07 00:47:03,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-11-07 00:47:03,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2019-11-07 00:47:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2019-11-07 00:47:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 640 transitions. [2019-11-07 00:47:03,703 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 640 transitions. Word has length 187 [2019-11-07 00:47:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:03,704 INFO L462 AbstractCegarLoop]: Abstraction has 484 states and 640 transitions. [2019-11-07 00:47:03,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:03,704 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 640 transitions. [2019-11-07 00:47:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 00:47:03,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:03,746 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:03,746 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:03,747 INFO L82 PathProgramCache]: Analyzing trace with hash -463058359, now seen corresponding path program 1 times [2019-11-07 00:47:03,747 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:03,747 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839345914] [2019-11-07 00:47:03,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:03,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839345914] [2019-11-07 00:47:03,947 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:03,947 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:03,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69512160] [2019-11-07 00:47:03,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:03,953 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:03,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:03,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:03,954 INFO L87 Difference]: Start difference. First operand 484 states and 640 transitions. Second operand 3 states. [2019-11-07 00:47:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:04,008 INFO L93 Difference]: Finished difference Result 946 states and 1281 transitions. [2019-11-07 00:47:04,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:04,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-11-07 00:47:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:04,013 INFO L225 Difference]: With dead ends: 946 [2019-11-07 00:47:04,013 INFO L226 Difference]: Without dead ends: 527 [2019-11-07 00:47:04,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-11-07 00:47:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 526. [2019-11-07 00:47:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-11-07 00:47:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2019-11-07 00:47:04,056 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 199 [2019-11-07 00:47:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:04,058 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2019-11-07 00:47:04,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2019-11-07 00:47:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:47:04,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:04,067 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:04,068 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:04,068 INFO L82 PathProgramCache]: Analyzing trace with hash -364676623, now seen corresponding path program 1 times [2019-11-07 00:47:04,068 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:04,068 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193978383] [2019-11-07 00:47:04,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:04,218 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193978383] [2019-11-07 00:47:04,218 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:04,219 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:04,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628945128] [2019-11-07 00:47:04,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:04,220 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:04,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:04,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:04,221 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand 3 states. [2019-11-07 00:47:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:04,312 INFO L93 Difference]: Finished difference Result 1069 states and 1492 transitions. [2019-11-07 00:47:04,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:04,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2019-11-07 00:47:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:04,317 INFO L225 Difference]: With dead ends: 1069 [2019-11-07 00:47:04,317 INFO L226 Difference]: Without dead ends: 608 [2019-11-07 00:47:04,319 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-07 00:47:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 607. [2019-11-07 00:47:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-11-07 00:47:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 850 transitions. [2019-11-07 00:47:04,346 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 850 transitions. Word has length 200 [2019-11-07 00:47:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:04,347 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 850 transitions. [2019-11-07 00:47:04,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 850 transitions. [2019-11-07 00:47:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:47:04,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:04,352 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:04,352 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1850375443, now seen corresponding path program 1 times [2019-11-07 00:47:04,353 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:04,353 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126117008] [2019-11-07 00:47:04,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:04,745 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126117008] [2019-11-07 00:47:04,746 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:04,746 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:47:04,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655102905] [2019-11-07 00:47:04,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:47:04,747 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:04,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:47:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:47:04,749 INFO L87 Difference]: Start difference. First operand 607 states and 850 transitions. Second operand 19 states. [2019-11-07 00:47:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:09,380 INFO L93 Difference]: Finished difference Result 1925 states and 2678 transitions. [2019-11-07 00:47:09,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-07 00:47:09,381 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 203 [2019-11-07 00:47:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:09,397 INFO L225 Difference]: With dead ends: 1925 [2019-11-07 00:47:09,397 INFO L226 Difference]: Without dead ends: 1699 [2019-11-07 00:47:09,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 00:47:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2019-11-07 00:47:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1662. [2019-11-07 00:47:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2019-11-07 00:47:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2334 transitions. [2019-11-07 00:47:09,508 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2334 transitions. Word has length 203 [2019-11-07 00:47:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:09,510 INFO L462 AbstractCegarLoop]: Abstraction has 1662 states and 2334 transitions. [2019-11-07 00:47:09,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:47:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2334 transitions. [2019-11-07 00:47:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:47:09,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:09,518 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:09,518 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:09,518 INFO L82 PathProgramCache]: Analyzing trace with hash -956589383, now seen corresponding path program 1 times [2019-11-07 00:47:09,519 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:09,519 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328910367] [2019-11-07 00:47:09,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:09,821 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328910367] [2019-11-07 00:47:09,822 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:09,822 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:47:09,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354032421] [2019-11-07 00:47:09,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:47:09,824 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:47:09,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:47:09,824 INFO L87 Difference]: Start difference. First operand 1662 states and 2334 transitions. Second operand 15 states. [2019-11-07 00:47:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:13,364 INFO L93 Difference]: Finished difference Result 2719 states and 3748 transitions. [2019-11-07 00:47:13,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-07 00:47:13,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 204 [2019-11-07 00:47:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:13,375 INFO L225 Difference]: With dead ends: 2719 [2019-11-07 00:47:13,375 INFO L226 Difference]: Without dead ends: 1764 [2019-11-07 00:47:13,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 00:47:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2019-11-07 00:47:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1732. [2019-11-07 00:47:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2019-11-07 00:47:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2445 transitions. [2019-11-07 00:47:13,480 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2445 transitions. Word has length 204 [2019-11-07 00:47:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:13,480 INFO L462 AbstractCegarLoop]: Abstraction has 1732 states and 2445 transitions. [2019-11-07 00:47:13,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:47:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2445 transitions. [2019-11-07 00:47:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:47:13,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:13,488 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:13,488 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:13,489 INFO L82 PathProgramCache]: Analyzing trace with hash 489053248, now seen corresponding path program 1 times [2019-11-07 00:47:13,489 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:13,489 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873509227] [2019-11-07 00:47:13,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:47:13,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873509227] [2019-11-07 00:47:13,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:13,775 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 00:47:13,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646845236] [2019-11-07 00:47:13,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:47:13,776 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:13,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:47:13,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:47:13,777 INFO L87 Difference]: Start difference. First operand 1732 states and 2445 transitions. Second operand 14 states. [2019-11-07 00:47:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:14,100 INFO L93 Difference]: Finished difference Result 2859 states and 3965 transitions. [2019-11-07 00:47:14,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:47:14,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2019-11-07 00:47:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:14,113 INFO L225 Difference]: With dead ends: 2859 [2019-11-07 00:47:14,113 INFO L226 Difference]: Without dead ends: 1792 [2019-11-07 00:47:14,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:47:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2019-11-07 00:47:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1761. [2019-11-07 00:47:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2019-11-07 00:47:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2476 transitions. [2019-11-07 00:47:14,263 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2476 transitions. Word has length 204 [2019-11-07 00:47:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:14,263 INFO L462 AbstractCegarLoop]: Abstraction has 1761 states and 2476 transitions. [2019-11-07 00:47:14,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:47:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2476 transitions. [2019-11-07 00:47:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:47:14,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:14,275 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:14,275 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:14,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:14,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1632558215, now seen corresponding path program 1 times [2019-11-07 00:47:14,276 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:14,276 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445299539] [2019-11-07 00:47:14,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:14,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445299539] [2019-11-07 00:47:14,463 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:14,463 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:47:14,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386201014] [2019-11-07 00:47:14,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:47:14,465 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:14,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:47:14,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:14,466 INFO L87 Difference]: Start difference. First operand 1761 states and 2476 transitions. Second operand 5 states. [2019-11-07 00:47:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:15,451 INFO L93 Difference]: Finished difference Result 4068 states and 5618 transitions. [2019-11-07 00:47:15,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:47:15,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-11-07 00:47:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:15,473 INFO L225 Difference]: With dead ends: 4068 [2019-11-07 00:47:15,473 INFO L226 Difference]: Without dead ends: 3537 [2019-11-07 00:47:15,478 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:47:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2019-11-07 00:47:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3506. [2019-11-07 00:47:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2019-11-07 00:47:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4880 transitions. [2019-11-07 00:47:15,688 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4880 transitions. Word has length 204 [2019-11-07 00:47:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:15,688 INFO L462 AbstractCegarLoop]: Abstraction has 3506 states and 4880 transitions. [2019-11-07 00:47:15,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:47:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4880 transitions. [2019-11-07 00:47:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:47:15,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:15,700 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:15,701 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:15,701 INFO L82 PathProgramCache]: Analyzing trace with hash 677036936, now seen corresponding path program 1 times [2019-11-07 00:47:15,701 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:15,702 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21050481] [2019-11-07 00:47:15,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:16,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21050481] [2019-11-07 00:47:16,101 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:16,102 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:47:16,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939469711] [2019-11-07 00:47:16,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:47:16,104 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:47:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:47:16,104 INFO L87 Difference]: Start difference. First operand 3506 states and 4880 transitions. Second operand 7 states. [2019-11-07 00:47:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:18,000 INFO L93 Difference]: Finished difference Result 10740 states and 14954 transitions. [2019-11-07 00:47:18,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:47:18,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-11-07 00:47:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:18,057 INFO L225 Difference]: With dead ends: 10740 [2019-11-07 00:47:18,057 INFO L226 Difference]: Without dead ends: 8412 [2019-11-07 00:47:18,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:47:18,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8412 states. [2019-11-07 00:47:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8412 to 8390. [2019-11-07 00:47:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8390 states. [2019-11-07 00:47:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 11592 transitions. [2019-11-07 00:47:18,581 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 11592 transitions. Word has length 204 [2019-11-07 00:47:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:18,583 INFO L462 AbstractCegarLoop]: Abstraction has 8390 states and 11592 transitions. [2019-11-07 00:47:18,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:47:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 11592 transitions. [2019-11-07 00:47:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:47:18,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:18,599 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:18,600 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:18,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1402076048, now seen corresponding path program 1 times [2019-11-07 00:47:18,600 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:18,600 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638521567] [2019-11-07 00:47:18,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:19,248 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638521567] [2019-11-07 00:47:19,249 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:19,249 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:47:19,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976973283] [2019-11-07 00:47:19,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:47:19,250 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:19,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:47:19,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:47:19,251 INFO L87 Difference]: Start difference. First operand 8390 states and 11592 transitions. Second operand 26 states. [2019-11-07 00:47:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:20,496 INFO L93 Difference]: Finished difference Result 16598 states and 23015 transitions. [2019-11-07 00:47:20,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:47:20,497 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2019-11-07 00:47:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:20,581 INFO L225 Difference]: With dead ends: 16598 [2019-11-07 00:47:20,581 INFO L226 Difference]: Without dead ends: 8912 [2019-11-07 00:47:20,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:47:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8912 states. [2019-11-07 00:47:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 8689. [2019-11-07 00:47:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2019-11-07 00:47:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 11985 transitions. [2019-11-07 00:47:21,020 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 11985 transitions. Word has length 205 [2019-11-07 00:47:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:21,020 INFO L462 AbstractCegarLoop]: Abstraction has 8689 states and 11985 transitions. [2019-11-07 00:47:21,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:47:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 11985 transitions. [2019-11-07 00:47:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:47:21,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:21,033 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:21,033 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:21,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1653752068, now seen corresponding path program 1 times [2019-11-07 00:47:21,033 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:21,034 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023734665] [2019-11-07 00:47:21,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:21,222 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023734665] [2019-11-07 00:47:21,222 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:21,222 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:47:21,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649631390] [2019-11-07 00:47:21,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:47:21,223 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:21,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:47:21,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:47:21,224 INFO L87 Difference]: Start difference. First operand 8689 states and 11985 transitions. Second operand 10 states. [2019-11-07 00:47:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:21,591 INFO L93 Difference]: Finished difference Result 8754 states and 12076 transitions. [2019-11-07 00:47:21,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:47:21,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 209 [2019-11-07 00:47:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:21,632 INFO L225 Difference]: With dead ends: 8754 [2019-11-07 00:47:21,632 INFO L226 Difference]: Without dead ends: 8720 [2019-11-07 00:47:21,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:47:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8720 states. [2019-11-07 00:47:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8720 to 8716. [2019-11-07 00:47:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8716 states. [2019-11-07 00:47:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8716 states to 8716 states and 11977 transitions. [2019-11-07 00:47:22,004 INFO L78 Accepts]: Start accepts. Automaton has 8716 states and 11977 transitions. Word has length 209 [2019-11-07 00:47:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:22,005 INFO L462 AbstractCegarLoop]: Abstraction has 8716 states and 11977 transitions. [2019-11-07 00:47:22,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:47:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8716 states and 11977 transitions. [2019-11-07 00:47:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-07 00:47:22,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:22,018 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:22,018 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:22,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1874145188, now seen corresponding path program 1 times [2019-11-07 00:47:22,019 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:22,019 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512810379] [2019-11-07 00:47:22,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:22,146 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512810379] [2019-11-07 00:47:22,146 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:22,147 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:47:22,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943261481] [2019-11-07 00:47:22,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:47:22,148 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:22,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:47:22,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:22,148 INFO L87 Difference]: Start difference. First operand 8716 states and 11977 transitions. Second operand 5 states. [2019-11-07 00:47:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:22,373 INFO L93 Difference]: Finished difference Result 15387 states and 20872 transitions. [2019-11-07 00:47:22,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:47:22,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-11-07 00:47:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:22,422 INFO L225 Difference]: With dead ends: 15387 [2019-11-07 00:47:22,422 INFO L226 Difference]: Without dead ends: 8959 [2019-11-07 00:47:22,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2019-11-07 00:47:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 8848. [2019-11-07 00:47:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2019-11-07 00:47:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 12124 transitions. [2019-11-07 00:47:23,533 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 12124 transitions. Word has length 214 [2019-11-07 00:47:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:23,533 INFO L462 AbstractCegarLoop]: Abstraction has 8848 states and 12124 transitions. [2019-11-07 00:47:23,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:47:23,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 12124 transitions. [2019-11-07 00:47:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-07 00:47:23,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:23,545 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:47:23,546 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:23,546 INFO L82 PathProgramCache]: Analyzing trace with hash -604466908, now seen corresponding path program 1 times [2019-11-07 00:47:23,546 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:23,547 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519510223] [2019-11-07 00:47:23,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:23,725 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519510223] [2019-11-07 00:47:23,725 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:23,725 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:47:23,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014618952] [2019-11-07 00:47:23,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:47:23,726 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:23,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:47:23,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:47:23,727 INFO L87 Difference]: Start difference. First operand 8848 states and 12124 transitions. Second operand 9 states. [2019-11-07 00:47:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:24,147 INFO L93 Difference]: Finished difference Result 15416 states and 20789 transitions. [2019-11-07 00:47:24,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:47:24,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2019-11-07 00:47:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:24,191 INFO L225 Difference]: With dead ends: 15416 [2019-11-07 00:47:24,191 INFO L226 Difference]: Without dead ends: 8880 [2019-11-07 00:47:24,215 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:47:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2019-11-07 00:47:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8814. [2019-11-07 00:47:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8814 states. [2019-11-07 00:47:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 12040 transitions. [2019-11-07 00:47:24,754 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 12040 transitions. Word has length 214 [2019-11-07 00:47:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:24,755 INFO L462 AbstractCegarLoop]: Abstraction has 8814 states and 12040 transitions. [2019-11-07 00:47:24,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:47:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 12040 transitions. [2019-11-07 00:47:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-11-07 00:47:24,768 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:24,768 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:24,768 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash -990686485, now seen corresponding path program 1 times [2019-11-07 00:47:24,769 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:24,769 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932661169] [2019-11-07 00:47:24,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:47:24,914 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932661169] [2019-11-07 00:47:24,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:24,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:47:24,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772747758] [2019-11-07 00:47:24,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:47:24,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:24,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:47:24,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:47:24,916 INFO L87 Difference]: Start difference. First operand 8814 states and 12040 transitions. Second operand 6 states. [2019-11-07 00:47:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:25,676 INFO L93 Difference]: Finished difference Result 24003 states and 32530 transitions. [2019-11-07 00:47:25,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:47:25,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2019-11-07 00:47:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:25,754 INFO L225 Difference]: With dead ends: 24003 [2019-11-07 00:47:25,754 INFO L226 Difference]: Without dead ends: 17705 [2019-11-07 00:47:25,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:47:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2019-11-07 00:47:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17454. [2019-11-07 00:47:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17454 states. [2019-11-07 00:47:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17454 states to 17454 states and 23892 transitions. [2019-11-07 00:47:26,687 INFO L78 Accepts]: Start accepts. Automaton has 17454 states and 23892 transitions. Word has length 215 [2019-11-07 00:47:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:26,688 INFO L462 AbstractCegarLoop]: Abstraction has 17454 states and 23892 transitions. [2019-11-07 00:47:26,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:47:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 17454 states and 23892 transitions. [2019-11-07 00:47:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-07 00:47:26,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:26,715 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:26,716 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash -352001832, now seen corresponding path program 1 times [2019-11-07 00:47:26,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:26,716 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554112090] [2019-11-07 00:47:26,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:26,839 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554112090] [2019-11-07 00:47:26,839 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:26,840 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:26,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879945751] [2019-11-07 00:47:26,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:26,841 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:26,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:26,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:26,841 INFO L87 Difference]: Start difference. First operand 17454 states and 23892 transitions. Second operand 3 states. [2019-11-07 00:47:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:27,341 INFO L93 Difference]: Finished difference Result 35785 states and 49541 transitions. [2019-11-07 00:47:27,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:27,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2019-11-07 00:47:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:27,413 INFO L225 Difference]: With dead ends: 35785 [2019-11-07 00:47:27,414 INFO L226 Difference]: Without dead ends: 18396 [2019-11-07 00:47:27,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2019-11-07 00:47:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 18390. [2019-11-07 00:47:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18390 states. [2019-11-07 00:47:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18390 states to 18390 states and 25692 transitions. [2019-11-07 00:47:28,409 INFO L78 Accepts]: Start accepts. Automaton has 18390 states and 25692 transitions. Word has length 235 [2019-11-07 00:47:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:28,410 INFO L462 AbstractCegarLoop]: Abstraction has 18390 states and 25692 transitions. [2019-11-07 00:47:28,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 18390 states and 25692 transitions. [2019-11-07 00:47:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-11-07 00:47:28,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:28,448 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:28,448 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1044967040, now seen corresponding path program 1 times [2019-11-07 00:47:28,449 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:28,449 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88974294] [2019-11-07 00:47:28,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:47:28,638 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88974294] [2019-11-07 00:47:28,638 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:28,638 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:47:28,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483481240] [2019-11-07 00:47:28,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:47:28,639 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:28,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:47:28,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:47:28,640 INFO L87 Difference]: Start difference. First operand 18390 states and 25692 transitions. Second operand 8 states.