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_spec27_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:41,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:41,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:41,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:41,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:41,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:41,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:41,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:41,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:41,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:41,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:41,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:41,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:41,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:41,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:41,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:41,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:41,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:41,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:41,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:41,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:41,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:41,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:41,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:41,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:41,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:41,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:41,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:41,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:41,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:41,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:41,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:41,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:41,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:41,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:41,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:41,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:41,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:41,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:41,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:41,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:41,884 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 [2019-10-15 01:13:41,906 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:41,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:41,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:41,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:41,909 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:41,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:41,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:41,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:41,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:41,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:41,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:41,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:41,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:41,912 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:41,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:41,912 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:41,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:41,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:41,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:41,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:41,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:41,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:41,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:41,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:41,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:41,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:41,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:41,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:41,915 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 [2019-10-15 01:13:42,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:42,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:42,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:42,218 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:42,219 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:42,219 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2019-10-15 01:13:42,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da19ba7ad/6b40f943f152468aa4cb5cc43af03a68/FLAG0196b6b02 [2019-10-15 01:13:42,943 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:42,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2019-10-15 01:13:42,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da19ba7ad/6b40f943f152468aa4cb5cc43af03a68/FLAG0196b6b02 [2019-10-15 01:13:43,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da19ba7ad/6b40f943f152468aa4cb5cc43af03a68 [2019-10-15 01:13:43,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:43,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:43,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:43,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:43,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:43,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3264c97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:43, skipping insertion in model container [2019-10-15 01:13:43,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:43" (1/1) ... [2019-10-15 01:13:43,194 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:43,275 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:44,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:44,256 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:44,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:44,493 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:44,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44 WrapperNode [2019-10-15 01:13:44,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:44,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:44,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:44,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:44,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (1/1) ... [2019-10-15 01:13:44,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:44,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:44,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:44,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:44,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (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 [2019-10-15 01:13:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:44,729 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:13:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:44,730 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:44,731 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:44,732 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:44,732 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:44,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:44,732 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:44,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:13:44,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:44,733 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:44,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:44,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:44,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:44,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:44,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:44,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:44,735 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:44,736 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:44,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:44,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:44,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:44,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:13:44,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:44,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:44,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:44,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:44,738 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:44,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:44,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:44,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:44,740 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:44,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:44,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:13:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:44,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:44,750 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:44,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:44,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:44,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:44,752 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:44,753 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:13:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:13:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:13:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:46,887 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:46,887 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:46,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:46 BoogieIcfgContainer [2019-10-15 01:13:46,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:46,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:46,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:46,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:46,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:43" (1/3) ... [2019-10-15 01:13:46,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e9900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:46, skipping insertion in model container [2019-10-15 01:13:46,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:44" (2/3) ... [2019-10-15 01:13:46,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e9900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:46, skipping insertion in model container [2019-10-15 01:13:46,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:46" (3/3) ... [2019-10-15 01:13:46,899 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.c [2019-10-15 01:13:46,910 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:46,925 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:46,938 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:46,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:46,989 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:46,989 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:46,990 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:46,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:46,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:46,990 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:46,990 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-15 01:13:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 01:13:47,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:47,075 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:47,083 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:47,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1817645931, now seen corresponding path program 1 times [2019-10-15 01:13:47,107 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:47,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225374110] [2019-10-15 01:13:47,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:47,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:48,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225374110] [2019-10-15 01:13:48,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:48,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:48,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069690682] [2019-10-15 01:13:48,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:48,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:48,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:48,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:48,040 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 2 states. [2019-10-15 01:13:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:48,152 INFO L93 Difference]: Finished difference Result 747 states and 1021 transitions. [2019-10-15 01:13:48,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:48,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 186 [2019-10-15 01:13:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:48,190 INFO L225 Difference]: With dead ends: 747 [2019-10-15 01:13:48,190 INFO L226 Difference]: Without dead ends: 496 [2019-10-15 01:13:48,200 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 [2019-10-15 01:13:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-10-15 01:13:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2019-10-15 01:13:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2019-10-15 01:13:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 681 transitions. [2019-10-15 01:13:48,357 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 681 transitions. Word has length 186 [2019-10-15 01:13:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:48,361 INFO L462 AbstractCegarLoop]: Abstraction has 496 states and 681 transitions. [2019-10-15 01:13:48,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 681 transitions. [2019-10-15 01:13:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:13:48,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:48,372 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:48,373 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1884483805, now seen corresponding path program 1 times [2019-10-15 01:13:48,375 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:48,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431240777] [2019-10-15 01:13:48,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:48,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431240777] [2019-10-15 01:13:48,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:48,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:48,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519437773] [2019-10-15 01:13:48,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:48,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:48,626 INFO L87 Difference]: Start difference. First operand 496 states and 681 transitions. Second operand 3 states. [2019-10-15 01:13:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:48,712 INFO L93 Difference]: Finished difference Result 730 states and 984 transitions. [2019-10-15 01:13:48,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:48,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-15 01:13:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:48,719 INFO L225 Difference]: With dead ends: 730 [2019-10-15 01:13:48,719 INFO L226 Difference]: Without dead ends: 499 [2019-10-15 01:13:48,721 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 [2019-10-15 01:13:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-10-15 01:13:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2019-10-15 01:13:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-15 01:13:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 683 transitions. [2019-10-15 01:13:48,780 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 683 transitions. Word has length 187 [2019-10-15 01:13:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:48,781 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 683 transitions. [2019-10-15 01:13:48,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 683 transitions. [2019-10-15 01:13:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 01:13:48,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:48,822 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:48,822 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:48,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1131294487, now seen corresponding path program 1 times [2019-10-15 01:13:48,825 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:48,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330907622] [2019-10-15 01:13:48,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:48,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:49,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330907622] [2019-10-15 01:13:49,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:49,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:49,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291666228] [2019-10-15 01:13:49,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:49,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:49,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:49,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:49,066 INFO L87 Difference]: Start difference. First operand 498 states and 683 transitions. Second operand 3 states. [2019-10-15 01:13:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:49,112 INFO L93 Difference]: Finished difference Result 972 states and 1364 transitions. [2019-10-15 01:13:49,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:49,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-15 01:13:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:49,121 INFO L225 Difference]: With dead ends: 972 [2019-10-15 01:13:49,121 INFO L226 Difference]: Without dead ends: 539 [2019-10-15 01:13:49,123 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 [2019-10-15 01:13:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-15 01:13:49,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2019-10-15 01:13:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-15 01:13:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 752 transitions. [2019-10-15 01:13:49,160 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 752 transitions. Word has length 193 [2019-10-15 01:13:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:49,161 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 752 transitions. [2019-10-15 01:13:49,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 752 transitions. [2019-10-15 01:13:49,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-15 01:13:49,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:49,167 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:49,167 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:49,168 INFO L82 PathProgramCache]: Analyzing trace with hash 956987201, now seen corresponding path program 1 times [2019-10-15 01:13:49,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:49,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13664891] [2019-10-15 01:13:49,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:49,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13664891] [2019-10-15 01:13:49,438 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:49,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:49,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778347303] [2019-10-15 01:13:49,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:49,442 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:49,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:49,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:49,443 INFO L87 Difference]: Start difference. First operand 538 states and 752 transitions. Second operand 8 states. [2019-10-15 01:13:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:49,522 INFO L93 Difference]: Finished difference Result 756 states and 1043 transitions. [2019-10-15 01:13:49,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:49,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2019-10-15 01:13:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:49,529 INFO L225 Difference]: With dead ends: 756 [2019-10-15 01:13:49,529 INFO L226 Difference]: Without dead ends: 538 [2019-10-15 01:13:49,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-15 01:13:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2019-10-15 01:13:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-15 01:13:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 751 transitions. [2019-10-15 01:13:49,574 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 751 transitions. Word has length 194 [2019-10-15 01:13:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:49,576 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 751 transitions. [2019-10-15 01:13:49,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 751 transitions. [2019-10-15 01:13:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-15 01:13:49,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:49,585 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:49,585 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:49,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1401373072, now seen corresponding path program 1 times [2019-10-15 01:13:49,586 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:49,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666025358] [2019-10-15 01:13:49,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,588 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:49,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:49,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666025358] [2019-10-15 01:13:49,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:49,977 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:13:49,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878025500] [2019-10-15 01:13:49,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:49,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:49,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:49,979 INFO L87 Difference]: Start difference. First operand 538 states and 751 transitions. Second operand 7 states. [2019-10-15 01:13:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:52,856 INFO L93 Difference]: Finished difference Result 1003 states and 1370 transitions. [2019-10-15 01:13:52,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:13:52,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2019-10-15 01:13:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:52,862 INFO L225 Difference]: With dead ends: 1003 [2019-10-15 01:13:52,862 INFO L226 Difference]: Without dead ends: 781 [2019-10-15 01:13:52,864 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:13:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2019-10-15 01:13:52,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 772. [2019-10-15 01:13:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2019-10-15 01:13:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1061 transitions. [2019-10-15 01:13:52,910 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1061 transitions. Word has length 201 [2019-10-15 01:13:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:52,911 INFO L462 AbstractCegarLoop]: Abstraction has 772 states and 1061 transitions. [2019-10-15 01:13:52,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:13:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1061 transitions. [2019-10-15 01:13:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-15 01:13:52,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:52,916 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:52,916 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1299605141, now seen corresponding path program 1 times [2019-10-15 01:13:52,917 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:52,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737809848] [2019-10-15 01:13:52,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:52,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:52,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:53,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737809848] [2019-10-15 01:13:53,388 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:53,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-15 01:13:53,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025772906] [2019-10-15 01:13:53,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-15 01:13:53,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-15 01:13:53,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:13:53,391 INFO L87 Difference]: Start difference. First operand 772 states and 1061 transitions. Second operand 24 states. [2019-10-15 01:13:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:54,016 INFO L93 Difference]: Finished difference Result 1339 states and 1830 transitions. [2019-10-15 01:13:54,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-15 01:13:54,017 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 202 [2019-10-15 01:13:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:54,023 INFO L225 Difference]: With dead ends: 1339 [2019-10-15 01:13:54,023 INFO L226 Difference]: Without dead ends: 879 [2019-10-15 01:13:54,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:13:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2019-10-15 01:13:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 874. [2019-10-15 01:13:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-15 01:13:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1190 transitions. [2019-10-15 01:13:54,072 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1190 transitions. Word has length 202 [2019-10-15 01:13:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:54,073 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1190 transitions. [2019-10-15 01:13:54,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-15 01:13:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1190 transitions. [2019-10-15 01:13:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:13:54,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:54,078 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:54,079 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:54,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1826249361, now seen corresponding path program 1 times [2019-10-15 01:13:54,079 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:54,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362906016] [2019-10-15 01:13:54,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:13:54,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362906016] [2019-10-15 01:13:54,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:54,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:54,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591440635] [2019-10-15 01:13:54,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:54,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:54,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:54,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:54,346 INFO L87 Difference]: Start difference. First operand 874 states and 1190 transitions. Second operand 8 states. [2019-10-15 01:13:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:58,821 INFO L93 Difference]: Finished difference Result 2574 states and 3521 transitions. [2019-10-15 01:13:58,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:13:58,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2019-10-15 01:13:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:58,838 INFO L225 Difference]: With dead ends: 2574 [2019-10-15 01:13:58,838 INFO L226 Difference]: Without dead ends: 2036 [2019-10-15 01:13:58,843 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:13:58,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2019-10-15 01:13:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2024. [2019-10-15 01:13:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2019-10-15 01:13:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2758 transitions. [2019-10-15 01:13:58,957 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2758 transitions. Word has length 233 [2019-10-15 01:13:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:58,958 INFO L462 AbstractCegarLoop]: Abstraction has 2024 states and 2758 transitions. [2019-10-15 01:13:58,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2758 transitions. [2019-10-15 01:13:58,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-15 01:13:58,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:58,966 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:58,966 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1547017909, now seen corresponding path program 1 times [2019-10-15 01:13:58,967 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:58,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184919593] [2019-10-15 01:13:58,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:58,967 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:58,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:13:59,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184919593] [2019-10-15 01:13:59,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:59,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-15 01:13:59,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617936625] [2019-10-15 01:13:59,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 01:13:59,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:59,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 01:13:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:13:59,343 INFO L87 Difference]: Start difference. First operand 2024 states and 2758 transitions. Second operand 20 states. [2019-10-15 01:13:59,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:59,861 INFO L93 Difference]: Finished difference Result 3396 states and 4594 transitions. [2019-10-15 01:13:59,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 01:13:59,862 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 234 [2019-10-15 01:13:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:59,883 INFO L225 Difference]: With dead ends: 3396 [2019-10-15 01:13:59,883 INFO L226 Difference]: Without dead ends: 1752 [2019-10-15 01:13:59,890 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:13:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2019-10-15 01:13:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1742. [2019-10-15 01:13:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1742 states. [2019-10-15 01:13:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2369 transitions. [2019-10-15 01:13:59,975 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2369 transitions. Word has length 234 [2019-10-15 01:13:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:59,977 INFO L462 AbstractCegarLoop]: Abstraction has 1742 states and 2369 transitions. [2019-10-15 01:13:59,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 01:13:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2369 transitions. [2019-10-15 01:13:59,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-15 01:13:59,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:59,984 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:59,984 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:59,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:59,984 INFO L82 PathProgramCache]: Analyzing trace with hash -558509607, now seen corresponding path program 1 times [2019-10-15 01:13:59,985 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:59,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783959794] [2019-10-15 01:13:59,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:00,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783959794] [2019-10-15 01:14:00,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243800074] [2019-10-15 01:14:00,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:00,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:01,094 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:01,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:01,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:01,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:01,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:01,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:14:01,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920366457] [2019-10-15 01:14:01,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:01,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:01,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:01,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:01,799 INFO L87 Difference]: Start difference. First operand 1742 states and 2369 transitions. Second operand 9 states. [2019-10-15 01:14:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:03,344 INFO L93 Difference]: Finished difference Result 3462 states and 4718 transitions. [2019-10-15 01:14:03,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:03,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2019-10-15 01:14:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:03,355 INFO L225 Difference]: With dead ends: 3462 [2019-10-15 01:14:03,355 INFO L226 Difference]: Without dead ends: 1756 [2019-10-15 01:14:03,361 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 472 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2019-10-15 01:14:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1756. [2019-10-15 01:14:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1756 states. [2019-10-15 01:14:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2387 transitions. [2019-10-15 01:14:03,436 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2387 transitions. Word has length 243 [2019-10-15 01:14:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:03,437 INFO L462 AbstractCegarLoop]: Abstraction has 1756 states and 2387 transitions. [2019-10-15 01:14:03,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2387 transitions. [2019-10-15 01:14:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-15 01:14:03,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:03,442 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:03,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:03,659 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:03,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2032767429, now seen corresponding path program 1 times [2019-10-15 01:14:03,660 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:03,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543909328] [2019-10-15 01:14:03,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:03,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:03,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:04,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543909328] [2019-10-15 01:14:04,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956473356] [2019-10-15 01:14:04,072 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 [2019-10-15 01:14:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:04,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:04,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:05,030 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:05,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:05,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:05,416 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:05,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:05,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074060961] [2019-10-15 01:14:05,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:05,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:05,418 INFO L87 Difference]: Start difference. First operand 1756 states and 2387 transitions. Second operand 7 states. [2019-10-15 01:14:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:06,330 INFO L93 Difference]: Finished difference Result 3463 states and 4722 transitions. [2019-10-15 01:14:06,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:06,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2019-10-15 01:14:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:06,343 INFO L225 Difference]: With dead ends: 3463 [2019-10-15 01:14:06,343 INFO L226 Difference]: Without dead ends: 1758 [2019-10-15 01:14:06,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 479 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2019-10-15 01:14:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1758. [2019-10-15 01:14:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1758 states. [2019-10-15 01:14:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2390 transitions. [2019-10-15 01:14:06,419 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2390 transitions. Word has length 244 [2019-10-15 01:14:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:06,419 INFO L462 AbstractCegarLoop]: Abstraction has 1758 states and 2390 transitions. [2019-10-15 01:14:06,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2390 transitions. [2019-10-15 01:14:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:14:06,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:06,425 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:06,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:06,638 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash -610180837, now seen corresponding path program 1 times [2019-10-15 01:14:06,639 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:06,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584526949] [2019-10-15 01:14:06,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:06,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584526949] [2019-10-15 01:14:06,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788495903] [2019-10-15 01:14:06,896 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 [2019-10-15 01:14:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:07,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:07,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:07,969 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:08,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:08,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:08,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:08,602 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:08,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:08,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109434334] [2019-10-15 01:14:08,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:08,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:08,605 INFO L87 Difference]: Start difference. First operand 1758 states and 2390 transitions. Second operand 16 states. [2019-10-15 01:14:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:10,458 INFO L93 Difference]: Finished difference Result 3467 states and 4722 transitions. [2019-10-15 01:14:10,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:10,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 245 [2019-10-15 01:14:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:10,472 INFO L225 Difference]: With dead ends: 3467 [2019-10-15 01:14:10,473 INFO L226 Difference]: Without dead ends: 1770 [2019-10-15 01:14:10,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 476 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2019-10-15 01:14:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1768. [2019-10-15 01:14:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2019-10-15 01:14:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2401 transitions. [2019-10-15 01:14:10,564 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2401 transitions. Word has length 245 [2019-10-15 01:14:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:10,565 INFO L462 AbstractCegarLoop]: Abstraction has 1768 states and 2401 transitions. [2019-10-15 01:14:10,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2401 transitions. [2019-10-15 01:14:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 01:14:10,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:10,572 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:10,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:10,788 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash 869844959, now seen corresponding path program 2 times [2019-10-15 01:14:10,789 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:10,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018714098] [2019-10-15 01:14:10,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:10,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:10,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:11,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018714098] [2019-10-15 01:14:11,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678378373] [2019-10-15 01:14:11,550 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:12,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:14:12,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:12,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:12,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:12,413 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:12,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:12,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:12,922 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:12,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-15 01:14:12,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997054941] [2019-10-15 01:14:12,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:12,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:12,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:12,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:14:12,925 INFO L87 Difference]: Start difference. First operand 1768 states and 2401 transitions. Second operand 12 states. [2019-10-15 01:14:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:14,149 INFO L93 Difference]: Finished difference Result 3458 states and 4710 transitions. [2019-10-15 01:14:14,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:14,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 246 [2019-10-15 01:14:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:14,161 INFO L225 Difference]: With dead ends: 3458 [2019-10-15 01:14:14,161 INFO L226 Difference]: Without dead ends: 1770 [2019-10-15 01:14:14,169 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 494 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2019-10-15 01:14:14,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1768. [2019-10-15 01:14:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2019-10-15 01:14:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2400 transitions. [2019-10-15 01:14:14,253 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2400 transitions. Word has length 246 [2019-10-15 01:14:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:14,253 INFO L462 AbstractCegarLoop]: Abstraction has 1768 states and 2400 transitions. [2019-10-15 01:14:14,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2400 transitions. [2019-10-15 01:14:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-15 01:14:14,265 INFO L372 BasicCegarLoop]: Found error trace