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_spec4_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:08,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:08,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:08,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:08,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:08,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:08,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:08,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:08,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:08,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:08,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:08,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:08,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:08,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:08,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:08,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:08,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:08,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:08,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:08,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:08,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:08,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:08,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:08,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:08,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:08,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:08,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:08,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:08,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:08,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:08,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:08,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:08,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:08,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:08,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:08,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:08,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:08,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:08,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:09,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:09,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:09,002 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 21:16:09,016 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:09,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:09,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:09,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:09,018 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:09,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:09,018 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:09,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:09,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:09,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:09,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:09,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:09,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:09,020 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:09,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:09,020 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:09,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:09,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:09,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:09,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:09,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:09,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:09,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:09,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:09,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:09,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:09,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:09,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:09,022 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 21:16:09,313 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:09,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:09,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:09,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:09,336 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:09,337 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2019-10-13 21:16:09,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/134bb7b65/245788eed95a44679e32cd1602c915b0/FLAG2633a1ad1 [2019-10-13 21:16:10,013 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:10,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product17.cil.c [2019-10-13 21:16:10,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/134bb7b65/245788eed95a44679e32cd1602c915b0/FLAG2633a1ad1 [2019-10-13 21:16:10,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/134bb7b65/245788eed95a44679e32cd1602c915b0 [2019-10-13 21:16:10,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:10,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:10,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:10,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:10,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:10,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:10" (1/1) ... [2019-10-13 21:16:10,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e8ed57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:10, skipping insertion in model container [2019-10-13 21:16:10,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:10" (1/1) ... [2019-10-13 21:16:10,246 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:10,310 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:11,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:11,037 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:11,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:11,354 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:11,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11 WrapperNode [2019-10-13 21:16:11,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:11,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:11,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:11,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:11,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (1/1) ... [2019-10-13 21:16:11,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:11,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:11,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:11,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:11,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (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 21:16:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:11,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:11,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:11,672 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:11,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:11,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:11,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:11,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:11,684 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:11,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:11,685 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:11,687 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:11,688 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:11,691 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:11,691 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:11,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:11,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:16:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:11,707 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:11,708 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:11,709 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:11,721 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:11,722 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:11,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:13,896 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:13,897 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:13,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:13 BoogieIcfgContainer [2019-10-13 21:16:13,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:13,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:13,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:13,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:13,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:10" (1/3) ... [2019-10-13 21:16:13,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7220edb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:13, skipping insertion in model container [2019-10-13 21:16:13,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:11" (2/3) ... [2019-10-13 21:16:13,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7220edb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:13, skipping insertion in model container [2019-10-13 21:16:13,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:13" (3/3) ... [2019-10-13 21:16:13,911 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product17.cil.c [2019-10-13 21:16:13,925 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:13,939 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:13,951 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:14,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:14,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:14,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:14,004 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:14,004 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:14,004 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:14,004 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:14,005 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-10-13 21:16:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:16:14,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:14,093 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:14,098 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:14,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:14,109 INFO L82 PathProgramCache]: Analyzing trace with hash 513895372, now seen corresponding path program 1 times [2019-10-13 21:16:14,120 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:14,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430168714] [2019-10-13 21:16:14,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:14,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:14,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:14,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430168714] [2019-10-13 21:16:14,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:14,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:14,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163909541] [2019-10-13 21:16:14,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:14,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:14,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:14,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:14,912 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 2 states. [2019-10-13 21:16:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:15,027 INFO L93 Difference]: Finished difference Result 733 states and 1000 transitions. [2019-10-13 21:16:15,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:15,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-13 21:16:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:15,050 INFO L225 Difference]: With dead ends: 733 [2019-10-13 21:16:15,051 INFO L226 Difference]: Without dead ends: 489 [2019-10-13 21:16:15,059 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 21:16:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-13 21:16:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-13 21:16:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-13 21:16:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 672 transitions. [2019-10-13 21:16:15,177 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 672 transitions. Word has length 157 [2019-10-13 21:16:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:15,179 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 672 transitions. [2019-10-13 21:16:15,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 672 transitions. [2019-10-13 21:16:15,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:16:15,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:15,184 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:15,184 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1286604263, now seen corresponding path program 1 times [2019-10-13 21:16:15,185 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:15,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852056464] [2019-10-13 21:16:15,185 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,185 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:15,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852056464] [2019-10-13 21:16:15,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:15,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:15,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868801333] [2019-10-13 21:16:15,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:15,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:15,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:15,516 INFO L87 Difference]: Start difference. First operand 489 states and 672 transitions. Second operand 3 states. [2019-10-13 21:16:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:15,602 INFO L93 Difference]: Finished difference Result 716 states and 966 transitions. [2019-10-13 21:16:15,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:15,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:16:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:15,608 INFO L225 Difference]: With dead ends: 716 [2019-10-13 21:16:15,608 INFO L226 Difference]: Without dead ends: 492 [2019-10-13 21:16:15,612 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 21:16:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-13 21:16:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-13 21:16:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-13 21:16:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 674 transitions. [2019-10-13 21:16:15,647 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 674 transitions. Word has length 158 [2019-10-13 21:16:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:15,647 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 674 transitions. [2019-10-13 21:16:15,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 674 transitions. [2019-10-13 21:16:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:16:15,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:15,657 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:15,658 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1045004717, now seen corresponding path program 1 times [2019-10-13 21:16:15,659 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:15,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926122116] [2019-10-13 21:16:15,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:15,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926122116] [2019-10-13 21:16:15,921 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:15,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:15,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361820536] [2019-10-13 21:16:15,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:15,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:15,923 INFO L87 Difference]: Start difference. First operand 491 states and 674 transitions. Second operand 3 states. [2019-10-13 21:16:15,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:15,957 INFO L93 Difference]: Finished difference Result 958 states and 1346 transitions. [2019-10-13 21:16:15,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:15,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-13 21:16:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:15,962 INFO L225 Difference]: With dead ends: 958 [2019-10-13 21:16:15,962 INFO L226 Difference]: Without dead ends: 532 [2019-10-13 21:16:15,964 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 21:16:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-10-13 21:16:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2019-10-13 21:16:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-13 21:16:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 743 transitions. [2019-10-13 21:16:15,991 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 743 transitions. Word has length 164 [2019-10-13 21:16:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:15,992 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 743 transitions. [2019-10-13 21:16:15,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 743 transitions. [2019-10-13 21:16:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:16:15,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:15,997 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:15,997 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash -703696458, now seen corresponding path program 1 times [2019-10-13 21:16:15,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:15,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177739562] [2019-10-13 21:16:15,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:15,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:16,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177739562] [2019-10-13 21:16:16,348 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:16,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:16,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87352008] [2019-10-13 21:16:16,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:16,350 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:16,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:16,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:16,351 INFO L87 Difference]: Start difference. First operand 531 states and 743 transitions. Second operand 7 states. [2019-10-13 21:16:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:19,585 INFO L93 Difference]: Finished difference Result 971 states and 1323 transitions. [2019-10-13 21:16:19,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:19,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-10-13 21:16:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:19,590 INFO L225 Difference]: With dead ends: 971 [2019-10-13 21:16:19,591 INFO L226 Difference]: Without dead ends: 758 [2019-10-13 21:16:19,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-10-13 21:16:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 749. [2019-10-13 21:16:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-13 21:16:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1030 transitions. [2019-10-13 21:16:19,643 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1030 transitions. Word has length 165 [2019-10-13 21:16:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:19,644 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 1030 transitions. [2019-10-13 21:16:19,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1030 transitions. [2019-10-13 21:16:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:16:19,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:19,649 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:19,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:19,649 INFO L82 PathProgramCache]: Analyzing trace with hash 2037721411, now seen corresponding path program 1 times [2019-10-13 21:16:19,650 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:19,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728732682] [2019-10-13 21:16:19,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:19,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:19,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:20,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728732682] [2019-10-13 21:16:20,149 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:20,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:16:20,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515127603] [2019-10-13 21:16:20,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:16:20,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:20,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:16:20,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:20,152 INFO L87 Difference]: Start difference. First operand 749 states and 1030 transitions. Second operand 18 states. [2019-10-13 21:16:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:20,644 INFO L93 Difference]: Finished difference Result 1274 states and 1738 transitions. [2019-10-13 21:16:20,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:16:20,645 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2019-10-13 21:16:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:20,652 INFO L225 Difference]: With dead ends: 1274 [2019-10-13 21:16:20,652 INFO L226 Difference]: Without dead ends: 837 [2019-10-13 21:16:20,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2019-10-13 21:16:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 835. [2019-10-13 21:16:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2019-10-13 21:16:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1149 transitions. [2019-10-13 21:16:20,696 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1149 transitions. Word has length 166 [2019-10-13 21:16:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:20,696 INFO L462 AbstractCegarLoop]: Abstraction has 835 states and 1149 transitions. [2019-10-13 21:16:20,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:16:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1149 transitions. [2019-10-13 21:16:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:16:20,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:20,701 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:20,701 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:20,701 INFO L82 PathProgramCache]: Analyzing trace with hash 729638053, now seen corresponding path program 1 times [2019-10-13 21:16:20,702 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:20,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533195047] [2019-10-13 21:16:20,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:20,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:20,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:20,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533195047] [2019-10-13 21:16:20,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:20,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:20,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663635547] [2019-10-13 21:16:20,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:20,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:20,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:20,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:20,889 INFO L87 Difference]: Start difference. First operand 835 states and 1149 transitions. Second operand 8 states. [2019-10-13 21:16:21,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:21,753 INFO L93 Difference]: Finished difference Result 1742 states and 2364 transitions. [2019-10-13 21:16:21,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:21,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-10-13 21:16:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:21,764 INFO L225 Difference]: With dead ends: 1742 [2019-10-13 21:16:21,764 INFO L226 Difference]: Without dead ends: 1397 [2019-10-13 21:16:21,766 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2019-10-13 21:16:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1378. [2019-10-13 21:16:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-10-13 21:16:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1879 transitions. [2019-10-13 21:16:21,852 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1879 transitions. Word has length 175 [2019-10-13 21:16:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:21,853 INFO L462 AbstractCegarLoop]: Abstraction has 1378 states and 1879 transitions. [2019-10-13 21:16:21,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1879 transitions. [2019-10-13 21:16:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:16:21,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:21,858 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:21,858 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:21,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:21,859 INFO L82 PathProgramCache]: Analyzing trace with hash -225623184, now seen corresponding path program 1 times [2019-10-13 21:16:21,859 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:21,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531779191] [2019-10-13 21:16:21,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:22,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531779191] [2019-10-13 21:16:22,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:22,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-13 21:16:22,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927075406] [2019-10-13 21:16:22,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:16:22,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:22,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:16:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:16:22,155 INFO L87 Difference]: Start difference. First operand 1378 states and 1879 transitions. Second operand 17 states. [2019-10-13 21:16:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:22,931 INFO L93 Difference]: Finished difference Result 1885 states and 2555 transitions. [2019-10-13 21:16:22,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:16:22,932 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 176 [2019-10-13 21:16:22,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:22,941 INFO L225 Difference]: With dead ends: 1885 [2019-10-13 21:16:22,942 INFO L226 Difference]: Without dead ends: 1377 [2019-10-13 21:16:22,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2019-10-13 21:16:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1376. [2019-10-13 21:16:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2019-10-13 21:16:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1874 transitions. [2019-10-13 21:16:23,085 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1874 transitions. Word has length 176 [2019-10-13 21:16:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:23,088 INFO L462 AbstractCegarLoop]: Abstraction has 1376 states and 1874 transitions. [2019-10-13 21:16:23,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:16:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1874 transitions. [2019-10-13 21:16:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:16:23,092 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:23,092 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:23,093 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:23,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1949627460, now seen corresponding path program 2 times [2019-10-13 21:16:23,094 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:23,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808093673] [2019-10-13 21:16:23,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:23,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:23,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:23,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808093673] [2019-10-13 21:16:23,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793740492] [2019-10-13 21:16:23,346 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 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 21:16:23,839 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:23,839 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:23,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:23,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:24,083 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:24,679 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:24,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:24,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670035382] [2019-10-13 21:16:24,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:24,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:24,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:24,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:24,681 INFO L87 Difference]: Start difference. First operand 1376 states and 1874 transitions. Second operand 14 states. [2019-10-13 21:16:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:26,786 INFO L93 Difference]: Finished difference Result 4100 states and 5621 transitions. [2019-10-13 21:16:26,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:26,787 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-10-13 21:16:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:26,818 INFO L225 Difference]: With dead ends: 4100 [2019-10-13 21:16:26,818 INFO L226 Difference]: Without dead ends: 4097 [2019-10-13 21:16:26,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2019-10-13 21:16:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 2996. [2019-10-13 21:16:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2996 states. [2019-10-13 21:16:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4162 transitions. [2019-10-13 21:16:27,052 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4162 transitions. Word has length 176 [2019-10-13 21:16:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:27,053 INFO L462 AbstractCegarLoop]: Abstraction has 2996 states and 4162 transitions. [2019-10-13 21:16:27,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4162 transitions. [2019-10-13 21:16:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:16:27,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:27,064 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:27,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:27,274 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1550152414, now seen corresponding path program 1 times [2019-10-13 21:16:27,275 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:27,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392848914] [2019-10-13 21:16:27,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:27,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:27,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:27,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392848914] [2019-10-13 21:16:27,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782472787] [2019-10-13 21:16:27,468 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 21:16:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:28,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:28,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:28,262 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:28,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:28,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:28,740 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:28,740 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:16:28,741 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322503416] [2019-10-13 21:16:28,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:28,742 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:28,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:28,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:28,742 INFO L87 Difference]: Start difference. First operand 2996 states and 4162 transitions. Second operand 7 states. [2019-10-13 21:16:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:30,213 INFO L93 Difference]: Finished difference Result 5965 states and 8295 transitions. [2019-10-13 21:16:30,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:30,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-10-13 21:16:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:30,234 INFO L225 Difference]: With dead ends: 5965 [2019-10-13 21:16:30,234 INFO L226 Difference]: Without dead ends: 3008 [2019-10-13 21:16:30,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2019-10-13 21:16:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2998. [2019-10-13 21:16:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2998 states. [2019-10-13 21:16:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4165 transitions. [2019-10-13 21:16:30,408 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4165 transitions. Word has length 179 [2019-10-13 21:16:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:30,408 INFO L462 AbstractCegarLoop]: Abstraction has 2998 states and 4165 transitions. [2019-10-13 21:16:30,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4165 transitions. [2019-10-13 21:16:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:16:30,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:30,423 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:30,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:30,629 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:30,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1621431323, now seen corresponding path program 1 times [2019-10-13 21:16:30,630 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:30,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742586674] [2019-10-13 21:16:30,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:30,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:30,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:30,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742586674] [2019-10-13 21:16:30,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511423726] [2019-10-13 21:16:30,853 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 21:16:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:31,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:31,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:16:31,807 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:32,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:32,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:32,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:32,346 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:32,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:16:32,347 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393870322] [2019-10-13 21:16:32,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:32,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:32,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:32,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:32,348 INFO L87 Difference]: Start difference. First operand 2998 states and 4165 transitions. Second operand 9 states. [2019-10-13 21:16:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:33,785 INFO L93 Difference]: Finished difference Result 5972 states and 8305 transitions. [2019-10-13 21:16:33,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:33,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 180 [2019-10-13 21:16:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:33,805 INFO L225 Difference]: With dead ends: 5972 [2019-10-13 21:16:33,805 INFO L226 Difference]: Without dead ends: 3016 [2019-10-13 21:16:33,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2019-10-13 21:16:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3014. [2019-10-13 21:16:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3014 states. [2019-10-13 21:16:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4181 transitions. [2019-10-13 21:16:34,051 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4181 transitions. Word has length 180 [2019-10-13 21:16:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:34,053 INFO L462 AbstractCegarLoop]: Abstraction has 3014 states and 4181 transitions. [2019-10-13 21:16:34,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4181 transitions. [2019-10-13 21:16:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:16:34,069 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:34,069 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:16:34,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:34,289 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:34,289 INFO L82 PathProgramCache]: Analyzing trace with hash 886784686, now seen corresponding path program 1 times [2019-10-13 21:16:34,290 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:34,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005617439] [2019-10-13 21:16:34,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:34,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:34,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005617439] [2019-10-13 21:16:34,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936789819] [2019-10-13 21:16:34,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:16:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:35,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:35,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:35,323 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:35,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:35,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:35,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:35,969 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:35,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:16:35,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803492315] [2019-10-13 21:16:35,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:35,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:35,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:35,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:16:35,974 INFO L87 Difference]: Start difference. First operand 3014 states and 4181 transitions. Second operand 16 states. [2019-10-13 21:16:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,534 INFO L93 Difference]: Finished difference Result 5964 states and 8286 transitions. [2019-10-13 21:16:37,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:37,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-10-13 21:16:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,559 INFO L225 Difference]: With dead ends: 5964 [2019-10-13 21:16:37,559 INFO L226 Difference]: Without dead ends: 3038 [2019-10-13 21:16:37,570 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2019-10-13 21:16:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 3036. [2019-10-13 21:16:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3036 states. [2019-10-13 21:16:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 4206 transitions. [2019-10-13 21:16:37,738 INFO L78 Accepts]: Start accepts. Automaton has 3036 states and 4206 transitions. Word has length 181 [2019-10-13 21:16:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,739 INFO L462 AbstractCegarLoop]: Abstraction has 3036 states and 4206 transitions. [2019-10-13 21:16:37,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3036 states and 4206 transitions. [2019-10-13 21:16:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 21:16:37,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,753 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:16:37,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:37,962 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash 865387325, now seen corresponding path program 2 times [2019-10-13 21:16:37,963 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501338906] [2019-10-13 21:16:37,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,964 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:38,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501338906] [2019-10-13 21:16:38,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623340708] [2019-10-13 21:16:38,140 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 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 21:16:38,756 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:16:38,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:38,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:38,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:38,870 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:39,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:39,220 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:39,322 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:39,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-13 21:16:39,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236534001] [2019-10-13 21:16:39,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:16:39,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:39,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:16:39,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:16:39,331 INFO L87 Difference]: Start difference. First operand 3036 states and 4206 transitions. Second operand 11 states. [2019-10-13 21:16:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:41,227 INFO L93 Difference]: Finished difference Result 5703 states and 7870 transitions. [2019-10-13 21:16:41,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:41,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 182 [2019-10-13 21:16:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:41,245 INFO L225 Difference]: With dead ends: 5703 [2019-10-13 21:16:41,245 INFO L226 Difference]: Without dead ends: 2791 [2019-10-13 21:16:41,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 354 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:16:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2019-10-13 21:16:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2783. [2019-10-13 21:16:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2783 states. [2019-10-13 21:16:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3800 transitions. [2019-10-13 21:16:41,399 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3800 transitions. Word has length 182 [2019-10-13 21:16:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:41,399 INFO L462 AbstractCegarLoop]: Abstraction has 2783 states and 3800 transitions. [2019-10-13 21:16:41,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:16:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3800 transitions. [2019-10-13 21:16:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 21:16:41,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,408 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:16:41,620 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:41,620 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash 831339348, now seen corresponding path program 1 times [2019-10-13 21:16:41,621 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895801276] [2019-10-13 21:16:41,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:16:41,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895801276] [2019-10-13 21:16:41,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273983325] [2019-10-13 21:16:41,757 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