java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:57,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:57,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:58,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:58,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:58,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:58,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:58,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:58,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:58,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:58,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:58,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:58,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:58,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:58,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:58,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:58,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:58,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:58,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:58,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:58,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:58,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:58,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:58,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:58,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:58,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:58,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:58,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:58,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:58,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:58,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:58,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:58,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:58,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:58,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:58,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:58,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:58,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:58,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:58,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:58,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:58,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:58,074 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:58,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:58,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:58,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:58,076 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:58,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:58,077 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:58,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:58,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:58,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:58,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:58,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:58,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:58,080 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:58,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:58,080 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:58,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:58,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:58,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:58,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:58,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:58,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:58,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:58,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:58,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:58,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:58,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:58,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:58,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:58,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:58,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:58,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:58,361 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:58,361 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:58,362 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product35.cil.c [2019-10-13 21:15:58,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a834326/1fbfed6dc02942f2b700bda2dc419617/FLAG7dfb90d60 [2019-10-13 21:15:59,002 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:59,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product35.cil.c [2019-10-13 21:15:59,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a834326/1fbfed6dc02942f2b700bda2dc419617/FLAG7dfb90d60 [2019-10-13 21:15:59,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a834326/1fbfed6dc02942f2b700bda2dc419617 [2019-10-13 21:15:59,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:59,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:59,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:59,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:59,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:59,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9ca86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:59, skipping insertion in model container [2019-10-13 21:15:59,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:59" (1/1) ... [2019-10-13 21:15:59,264 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:59,335 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:00,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:00,038 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:00,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:00,300 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:00,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00 WrapperNode [2019-10-13 21:16:00,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:00,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:00,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:00,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:00,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... [2019-10-13 21:16:00,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:00,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:00,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:00,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:00,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:00,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:00,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:16:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:16:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:16:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:16:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:16:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:00,601 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:16:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:00,618 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:16:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:16:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:16:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:16:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:16:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:16:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:16:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:16:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:16:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:00,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:16:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:16:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:16:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:02,800 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:02,801 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:02,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:02 BoogieIcfgContainer [2019-10-13 21:16:02,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:02,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:02,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:02,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:02,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:59" (1/3) ... [2019-10-13 21:16:02,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175e2a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:02, skipping insertion in model container [2019-10-13 21:16:02,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:00" (2/3) ... [2019-10-13 21:16:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175e2a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:02, skipping insertion in model container [2019-10-13 21:16:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:02" (3/3) ... [2019-10-13 21:16:02,817 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product35.cil.c [2019-10-13 21:16:02,835 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:02,849 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:02,860 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:02,906 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:02,906 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:02,906 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:02,906 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:02,907 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:02,907 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:02,907 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:02,907 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states. [2019-10-13 21:16:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:16:02,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:02,985 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:02,987 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:02,993 INFO L82 PathProgramCache]: Analyzing trace with hash -743915879, now seen corresponding path program 1 times [2019-10-13 21:16:03,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807216082] [2019-10-13 21:16:03,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:03,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807216082] [2019-10-13 21:16:03,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:03,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:03,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035507776] [2019-10-13 21:16:03,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:03,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:03,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:03,725 INFO L87 Difference]: Start difference. First operand 695 states. Second operand 2 states. [2019-10-13 21:16:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:03,810 INFO L93 Difference]: Finished difference Result 1065 states and 1438 transitions. [2019-10-13 21:16:03,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:03,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2019-10-13 21:16:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:03,844 INFO L225 Difference]: With dead ends: 1065 [2019-10-13 21:16:03,845 INFO L226 Difference]: Without dead ends: 666 [2019-10-13 21:16:03,858 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-13 21:16:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2019-10-13 21:16:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-10-13 21:16:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 902 transitions. [2019-10-13 21:16:03,963 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 902 transitions. Word has length 204 [2019-10-13 21:16:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:03,967 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 902 transitions. [2019-10-13 21:16:03,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 902 transitions. [2019-10-13 21:16:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:16:03,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:03,976 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:03,976 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 880668841, now seen corresponding path program 1 times [2019-10-13 21:16:03,977 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:03,978 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801528037] [2019-10-13 21:16:03,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,978 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:03,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:04,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801528037] [2019-10-13 21:16:04,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:04,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:04,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832819244] [2019-10-13 21:16:04,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:04,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:04,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:04,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:04,327 INFO L87 Difference]: Start difference. First operand 666 states and 902 transitions. Second operand 3 states. [2019-10-13 21:16:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:04,449 INFO L93 Difference]: Finished difference Result 1048 states and 1398 transitions. [2019-10-13 21:16:04,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:04,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-13 21:16:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:04,462 INFO L225 Difference]: With dead ends: 1048 [2019-10-13 21:16:04,462 INFO L226 Difference]: Without dead ends: 669 [2019-10-13 21:16:04,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-10-13 21:16:04,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 668. [2019-10-13 21:16:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-10-13 21:16:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 904 transitions. [2019-10-13 21:16:04,531 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 904 transitions. Word has length 205 [2019-10-13 21:16:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:04,532 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 904 transitions. [2019-10-13 21:16:04,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 904 transitions. [2019-10-13 21:16:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:16:04,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:04,539 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:04,539 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:04,540 INFO L82 PathProgramCache]: Analyzing trace with hash -293016614, now seen corresponding path program 1 times [2019-10-13 21:16:04,540 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:04,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540500826] [2019-10-13 21:16:04,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:04,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540500826] [2019-10-13 21:16:04,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:04,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:04,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785249055] [2019-10-13 21:16:04,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:04,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:04,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:04,836 INFO L87 Difference]: Start difference. First operand 668 states and 904 transitions. Second operand 3 states. [2019-10-13 21:16:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:04,880 INFO L93 Difference]: Finished difference Result 1316 states and 1812 transitions. [2019-10-13 21:16:04,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:04,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2019-10-13 21:16:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:04,885 INFO L225 Difference]: With dead ends: 1316 [2019-10-13 21:16:04,885 INFO L226 Difference]: Without dead ends: 713 [2019-10-13 21:16:04,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2019-10-13 21:16:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 712. [2019-10-13 21:16:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2019-10-13 21:16:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 979 transitions. [2019-10-13 21:16:04,912 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 979 transitions. Word has length 217 [2019-10-13 21:16:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:04,912 INFO L462 AbstractCegarLoop]: Abstraction has 712 states and 979 transitions. [2019-10-13 21:16:04,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 979 transitions. [2019-10-13 21:16:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:16:04,921 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:04,922 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:04,922 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:04,923 INFO L82 PathProgramCache]: Analyzing trace with hash 373909830, now seen corresponding path program 1 times [2019-10-13 21:16:04,923 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:04,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890807427] [2019-10-13 21:16:04,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:05,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890807427] [2019-10-13 21:16:05,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:05,162 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:05,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117254860] [2019-10-13 21:16:05,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:05,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:05,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:05,164 INFO L87 Difference]: Start difference. First operand 712 states and 979 transitions. Second operand 3 states. [2019-10-13 21:16:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:05,218 INFO L93 Difference]: Finished difference Result 1445 states and 2032 transitions. [2019-10-13 21:16:05,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:05,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-10-13 21:16:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:05,227 INFO L225 Difference]: With dead ends: 1445 [2019-10-13 21:16:05,227 INFO L226 Difference]: Without dead ends: 798 [2019-10-13 21:16:05,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-10-13 21:16:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 797. [2019-10-13 21:16:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2019-10-13 21:16:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1123 transitions. [2019-10-13 21:16:05,269 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1123 transitions. Word has length 218 [2019-10-13 21:16:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:05,270 INFO L462 AbstractCegarLoop]: Abstraction has 797 states and 1123 transitions. [2019-10-13 21:16:05,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1123 transitions. [2019-10-13 21:16:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:16:05,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:05,276 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:05,276 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:05,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2072189759, now seen corresponding path program 1 times [2019-10-13 21:16:05,277 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:05,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476237367] [2019-10-13 21:16:05,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:05,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:05,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:05,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476237367] [2019-10-13 21:16:05,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762958682] [2019-10-13 21:16:05,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:06,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:06,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:06,944 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:07,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:07,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:07,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:07,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:07,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:07,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86301451] [2019-10-13 21:16:07,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:07,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:07,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:07,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:07,780 INFO L87 Difference]: Start difference. First operand 797 states and 1123 transitions. Second operand 9 states. [2019-10-13 21:16:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:10,495 INFO L93 Difference]: Finished difference Result 1572 states and 2226 transitions. [2019-10-13 21:16:10,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:10,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2019-10-13 21:16:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:10,501 INFO L225 Difference]: With dead ends: 1572 [2019-10-13 21:16:10,502 INFO L226 Difference]: Without dead ends: 811 [2019-10-13 21:16:10,504 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:10,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2019-10-13 21:16:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2019-10-13 21:16:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-10-13 21:16:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1141 transitions. [2019-10-13 21:16:10,540 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1141 transitions. Word has length 221 [2019-10-13 21:16:10,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:10,541 INFO L462 AbstractCegarLoop]: Abstraction has 811 states and 1141 transitions. [2019-10-13 21:16:10,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1141 transitions. [2019-10-13 21:16:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:16:10,546 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:10,546 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:10,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:10,747 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:10,748 INFO L82 PathProgramCache]: Analyzing trace with hash 619120565, now seen corresponding path program 1 times [2019-10-13 21:16:10,748 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:10,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970919348] [2019-10-13 21:16:10,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:10,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:10,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:11,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970919348] [2019-10-13 21:16:11,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223573701] [2019-10-13 21:16:11,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:11,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 3277 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:11,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:12,045 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:12,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:12,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:12,505 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:12,505 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:12,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777682351] [2019-10-13 21:16:12,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:12,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:12,508 INFO L87 Difference]: Start difference. First operand 811 states and 1141 transitions. Second operand 7 states. [2019-10-13 21:16:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:14,491 INFO L93 Difference]: Finished difference Result 1573 states and 2232 transitions. [2019-10-13 21:16:14,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:14,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2019-10-13 21:16:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:14,497 INFO L225 Difference]: With dead ends: 1573 [2019-10-13 21:16:14,497 INFO L226 Difference]: Without dead ends: 813 [2019-10-13 21:16:14,501 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 438 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:14,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-10-13 21:16:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2019-10-13 21:16:14,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2019-10-13 21:16:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1144 transitions. [2019-10-13 21:16:14,535 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1144 transitions. Word has length 222 [2019-10-13 21:16:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:14,535 INFO L462 AbstractCegarLoop]: Abstraction has 813 states and 1144 transitions. [2019-10-13 21:16:14,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1144 transitions. [2019-10-13 21:16:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-13 21:16:14,540 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:14,542 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:14,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:14,754 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash -609631398, now seen corresponding path program 1 times [2019-10-13 21:16:14,755 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:14,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467655364] [2019-10-13 21:16:14,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:14,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:14,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:15,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467655364] [2019-10-13 21:16:15,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516211580] [2019-10-13 21:16:15,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:15,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 3278 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:15,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:16,095 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:16,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:16,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:16,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:16,732 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:16,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:16,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584378123] [2019-10-13 21:16:16,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:16,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:16,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:16,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:16,735 INFO L87 Difference]: Start difference. First operand 813 states and 1144 transitions. Second operand 16 states. [2019-10-13 21:16:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:18,800 INFO L93 Difference]: Finished difference Result 1577 states and 2230 transitions. [2019-10-13 21:16:18,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:18,800 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 223 [2019-10-13 21:16:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:18,806 INFO L225 Difference]: With dead ends: 1577 [2019-10-13 21:16:18,806 INFO L226 Difference]: Without dead ends: 825 [2019-10-13 21:16:18,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 435 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2019-10-13 21:16:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 823. [2019-10-13 21:16:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2019-10-13 21:16:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1155 transitions. [2019-10-13 21:16:18,846 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1155 transitions. Word has length 223 [2019-10-13 21:16:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:18,846 INFO L462 AbstractCegarLoop]: Abstraction has 823 states and 1155 transitions. [2019-10-13 21:16:18,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1155 transitions. [2019-10-13 21:16:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:16:18,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:18,850 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:19,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:19,061 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:19,061 INFO L82 PathProgramCache]: Analyzing trace with hash 586173408, now seen corresponding path program 2 times [2019-10-13 21:16:19,061 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:19,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849144734] [2019-10-13 21:16:19,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:19,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:19,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:19,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849144734] [2019-10-13 21:16:19,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621503579] [2019-10-13 21:16:19,527 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:20,055 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:20,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:20,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:20,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:20,321 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:21,323 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:21,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:21,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880217040] [2019-10-13 21:16:21,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:21,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:21,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:21,327 INFO L87 Difference]: Start difference. First operand 823 states and 1155 transitions. Second operand 14 states. [2019-10-13 21:16:24,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:24,271 INFO L93 Difference]: Finished difference Result 2767 states and 3920 transitions. [2019-10-13 21:16:24,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:24,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 224 [2019-10-13 21:16:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:24,292 INFO L225 Difference]: With dead ends: 2767 [2019-10-13 21:16:24,292 INFO L226 Difference]: Without dead ends: 2401 [2019-10-13 21:16:24,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2019-10-13 21:16:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1986. [2019-10-13 21:16:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2019-10-13 21:16:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2880 transitions. [2019-10-13 21:16:24,407 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2880 transitions. Word has length 224 [2019-10-13 21:16:24,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:24,409 INFO L462 AbstractCegarLoop]: Abstraction has 1986 states and 2880 transitions. [2019-10-13 21:16:24,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2880 transitions. [2019-10-13 21:16:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:16:24,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:24,420 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:24,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:24,628 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash 789276184, now seen corresponding path program 1 times [2019-10-13 21:16:24,632 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:24,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760458815] [2019-10-13 21:16:24,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:24,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:24,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:25,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760458815] [2019-10-13 21:16:25,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885655735] [2019-10-13 21:16:25,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:25,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:25,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:25,860 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:26,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:26,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:26,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:26,435 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:26,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:26,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399264072] [2019-10-13 21:16:26,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:26,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:26,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:26,438 INFO L87 Difference]: Start difference. First operand 1986 states and 2880 transitions. Second operand 15 states. [2019-10-13 21:16:28,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:28,621 INFO L93 Difference]: Finished difference Result 3866 states and 5636 transitions. [2019-10-13 21:16:28,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:28,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 225 [2019-10-13 21:16:28,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:28,637 INFO L225 Difference]: With dead ends: 3866 [2019-10-13 21:16:28,637 INFO L226 Difference]: Without dead ends: 1992 [2019-10-13 21:16:28,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 439 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2019-10-13 21:16:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1986. [2019-10-13 21:16:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2019-10-13 21:16:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2878 transitions. [2019-10-13 21:16:28,743 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2878 transitions. Word has length 225 [2019-10-13 21:16:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:28,744 INFO L462 AbstractCegarLoop]: Abstraction has 1986 states and 2878 transitions. [2019-10-13 21:16:28,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2878 transitions. [2019-10-13 21:16:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 21:16:28,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:28,755 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:28,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:28,972 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash -139161799, now seen corresponding path program 1 times [2019-10-13 21:16:28,973 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:28,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858416222] [2019-10-13 21:16:28,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:29,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858416222] [2019-10-13 21:16:29,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376622334] [2019-10-13 21:16:29,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:30,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 3281 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:30,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:30,430 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:30,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:30,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:30,807 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:30,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:30,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93628732] [2019-10-13 21:16:30,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:30,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:30,809 INFO L87 Difference]: Start difference. First operand 1986 states and 2878 transitions. Second operand 12 states. [2019-10-13 21:16:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:33,500 INFO L93 Difference]: Finished difference Result 3105 states and 4432 transitions. [2019-10-13 21:16:33,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:33,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 226 [2019-10-13 21:16:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:33,510 INFO L225 Difference]: With dead ends: 3105 [2019-10-13 21:16:33,510 INFO L226 Difference]: Without dead ends: 1618 [2019-10-13 21:16:33,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2019-10-13 21:16:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1618. [2019-10-13 21:16:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1618 states. [2019-10-13 21:16:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2289 transitions. [2019-10-13 21:16:33,577 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2289 transitions. Word has length 226 [2019-10-13 21:16:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:33,577 INFO L462 AbstractCegarLoop]: Abstraction has 1618 states and 2289 transitions. [2019-10-13 21:16:33,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:16:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2289 transitions. [2019-10-13 21:16:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:16:33,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:33,584 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:33,800 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:33,801 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:33,802 INFO L82 PathProgramCache]: Analyzing trace with hash 32330316, now seen corresponding path program 2 times [2019-10-13 21:16:33,802 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:33,803 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627581113] [2019-10-13 21:16:33,803 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:33,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY