/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:55:16,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:55:16,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:55:16,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:55:16,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:55:16,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:55:16,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:55:16,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:55:16,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:55:16,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:55:16,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:55:16,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:55:16,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:55:16,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:55:16,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:55:16,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:55:16,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:55:16,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:55:16,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:55:16,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:55:16,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:55:16,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:55:16,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:55:16,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:55:16,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:55:16,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:55:16,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:55:16,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:55:16,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:55:16,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:55:16,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:55:16,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:55:16,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:55:16,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:55:16,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:55:16,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:55:16,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:55:16,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:55:16,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:55:16,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:55:16,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:55:16,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:55:16,160 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:55:16,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:55:16,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:55:16,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:55:16,163 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:55:16,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:55:16,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:55:16,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:55:16,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:55:16,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:55:16,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:55:16,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:55:16,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:55:16,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:55:16,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:55:16,166 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:55:16,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:55:16,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:55:16,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:55:16,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:55:16,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:55:16,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:16,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:55:16,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:55:16,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:55:16,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:55:16,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:55:16,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:55:16,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:55:16,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:55:16,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:55:16,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:55:16,466 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:55:16,467 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:55:16,467 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c [2019-11-07 00:55:16,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e4692e1/7681b120e77a47bea4adb9d50826d221/FLAG786060f38 [2019-11-07 00:55:17,150 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:55:17,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c [2019-11-07 00:55:17,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e4692e1/7681b120e77a47bea4adb9d50826d221/FLAG786060f38 [2019-11-07 00:55:17,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e4692e1/7681b120e77a47bea4adb9d50826d221 [2019-11-07 00:55:17,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:55:17,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:55:17,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:17,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:55:17,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:55:17,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:17" (1/1) ... [2019-11-07 00:55:17,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4449781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:17, skipping insertion in model container [2019-11-07 00:55:17,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:17" (1/1) ... [2019-11-07 00:55:17,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:55:17,444 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:55:18,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:18,216 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:55:18,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:55:18,521 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:55:18,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18 WrapperNode [2019-11-07 00:55:18,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:55:18,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:55:18,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:55:18,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:55:18,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... [2019-11-07 00:55:18,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:55:18,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:55:18,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:55:18,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:55:18,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:55:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:55:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:55:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:55:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:55:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:55:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:55:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:55:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:55:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:55:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:55:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:55:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:55:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:55:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:55:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:55:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:55:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:55:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:55:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:55:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:55:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:55:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:55:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:55:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:55:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:55:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:55:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:55:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:55:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:55:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:55:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:55:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:55:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:55:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:55:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:55:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:55:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:55:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:55:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:55:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:55:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:55:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:55:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:55:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:55:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:55:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:55:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:55:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:55:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:55:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:55:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:55:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:55:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:55:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:55:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:55:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:55:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:55:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:55:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:55:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:55:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:55:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:55:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:55:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:55:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:55:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:55:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:55:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:55:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:55:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:55:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:55:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:55:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:55:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:55:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:55:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:55:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:55:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:55:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:55:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:55:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:55:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:55:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:55:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:55:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:55:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:55:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:55:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:55:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:55:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:55:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:55:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:55:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:55:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:55:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:55:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:55:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:55:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:55:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:55:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:55:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:55:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-11-07 00:55:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:55:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:55:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:55:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:55:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:55:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:55:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:55:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:55:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:55:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:55:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:55:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:55:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:55:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:55:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:55:21,093 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:55:21,094 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:55:21,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:21 BoogieIcfgContainer [2019-11-07 00:55:21,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:55:21,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:55:21,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:55:21,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:55:21,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:17" (1/3) ... [2019-11-07 00:55:21,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f81af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:21, skipping insertion in model container [2019-11-07 00:55:21,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:18" (2/3) ... [2019-11-07 00:55:21,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f81af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:21, skipping insertion in model container [2019-11-07 00:55:21,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:21" (3/3) ... [2019-11-07 00:55:21,111 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product21.cil.c [2019-11-07 00:55:21,125 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:55:21,138 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:55:21,153 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:55:21,203 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:55:21,203 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:55:21,203 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:55:21,203 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:55:21,203 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:55:21,204 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:55:21,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:55:21,205 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:55:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-11-07 00:55:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:55:21,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:21,290 INFO L410 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] [2019-11-07 00:55:21,293 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:21,299 INFO L82 PathProgramCache]: Analyzing trace with hash 857697907, now seen corresponding path program 1 times [2019-11-07 00:55:21,318 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:21,319 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808492092] [2019-11-07 00:55:21,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:22,021 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808492092] [2019-11-07 00:55:22,022 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:22,022 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:55:22,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601954908] [2019-11-07 00:55:22,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:55:22,032 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:55:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:22,050 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 2 states. [2019-11-07 00:55:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:22,145 INFO L93 Difference]: Finished difference Result 832 states and 1126 transitions. [2019-11-07 00:55:22,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:55:22,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-11-07 00:55:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:22,180 INFO L225 Difference]: With dead ends: 832 [2019-11-07 00:55:22,180 INFO L226 Difference]: Without dead ends: 544 [2019-11-07 00:55:22,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:55:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-11-07 00:55:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-11-07 00:55:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-11-07 00:55:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 742 transitions. [2019-11-07 00:55:22,307 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 742 transitions. Word has length 154 [2019-11-07 00:55:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:22,309 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 742 transitions. [2019-11-07 00:55:22,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:55:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 742 transitions. [2019-11-07 00:55:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:55:22,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:22,318 INFO L410 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] [2019-11-07 00:55:22,318 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:22,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2017038380, now seen corresponding path program 1 times [2019-11-07 00:55:22,319 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:22,319 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288500695] [2019-11-07 00:55:22,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:22,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288500695] [2019-11-07 00:55:22,521 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:22,521 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:22,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479846883] [2019-11-07 00:55:22,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:22,524 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:22,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:22,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:22,525 INFO L87 Difference]: Start difference. First operand 544 states and 742 transitions. Second operand 3 states. [2019-11-07 00:55:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:22,577 INFO L93 Difference]: Finished difference Result 815 states and 1092 transitions. [2019-11-07 00:55:22,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:22,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:55:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:22,583 INFO L225 Difference]: With dead ends: 815 [2019-11-07 00:55:22,583 INFO L226 Difference]: Without dead ends: 547 [2019-11-07 00:55:22,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-11-07 00:55:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-11-07 00:55:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-11-07 00:55:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 744 transitions. [2019-11-07 00:55:22,636 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 744 transitions. Word has length 155 [2019-11-07 00:55:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:22,637 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 744 transitions. [2019-11-07 00:55:22,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 744 transitions. [2019-11-07 00:55:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 00:55:22,683 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:22,684 INFO L410 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] [2019-11-07 00:55:22,684 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash 480175040, now seen corresponding path program 1 times [2019-11-07 00:55:22,685 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:22,685 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905762816] [2019-11-07 00:55:22,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:55:22,844 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905762816] [2019-11-07 00:55:22,844 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:22,845 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:22,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856037430] [2019-11-07 00:55:22,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:22,849 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:22,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:22,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:22,850 INFO L87 Difference]: Start difference. First operand 546 states and 744 transitions. Second operand 3 states. [2019-11-07 00:55:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:22,906 INFO L93 Difference]: Finished difference Result 1070 states and 1489 transitions. [2019-11-07 00:55:22,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:22,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 00:55:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:22,918 INFO L225 Difference]: With dead ends: 1070 [2019-11-07 00:55:22,918 INFO L226 Difference]: Without dead ends: 589 [2019-11-07 00:55:22,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-07 00:55:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 588. [2019-11-07 00:55:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-11-07 00:55:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 816 transitions. [2019-11-07 00:55:22,981 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 816 transitions. Word has length 161 [2019-11-07 00:55:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:22,982 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 816 transitions. [2019-11-07 00:55:22,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 816 transitions. [2019-11-07 00:55:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:55:22,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:22,993 INFO L410 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] [2019-11-07 00:55:22,993 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash -868910391, now seen corresponding path program 1 times [2019-11-07 00:55:22,994 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:22,994 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733726204] [2019-11-07 00:55:22,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:55:23,360 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733726204] [2019-11-07 00:55:23,361 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:23,361 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:55:23,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425897030] [2019-11-07 00:55:23,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:55:23,370 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:23,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:55:23,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:23,371 INFO L87 Difference]: Start difference. First operand 588 states and 816 transitions. Second operand 3 states. [2019-11-07 00:55:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:23,435 INFO L93 Difference]: Finished difference Result 957 states and 1317 transitions. [2019-11-07 00:55:23,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:55:23,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-11-07 00:55:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:23,450 INFO L225 Difference]: With dead ends: 957 [2019-11-07 00:55:23,451 INFO L226 Difference]: Without dead ends: 702 [2019-11-07 00:55:23,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:55:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-11-07 00:55:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 701. [2019-11-07 00:55:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-11-07 00:55:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 978 transitions. [2019-11-07 00:55:23,515 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 978 transitions. Word has length 162 [2019-11-07 00:55:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:23,517 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 978 transitions. [2019-11-07 00:55:23,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:55:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 978 transitions. [2019-11-07 00:55:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-11-07 00:55:23,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:23,525 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:23,526 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1149971746, now seen corresponding path program 1 times [2019-11-07 00:55:23,527 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:23,527 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547995864] [2019-11-07 00:55:23,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:55:23,904 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547995864] [2019-11-07 00:55:23,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:23,905 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:55:23,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81847297] [2019-11-07 00:55:23,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:55:23,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:23,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:55:23,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:55:23,907 INFO L87 Difference]: Start difference. First operand 701 states and 978 transitions. Second operand 6 states. [2019-11-07 00:55:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:24,637 INFO L93 Difference]: Finished difference Result 1710 states and 2381 transitions. [2019-11-07 00:55:24,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:55:24,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2019-11-07 00:55:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:24,652 INFO L225 Difference]: With dead ends: 1710 [2019-11-07 00:55:24,653 INFO L226 Difference]: Without dead ends: 1353 [2019-11-07 00:55:24,655 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:55:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2019-11-07 00:55:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1342. [2019-11-07 00:55:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-11-07 00:55:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1892 transitions. [2019-11-07 00:55:24,730 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1892 transitions. Word has length 286 [2019-11-07 00:55:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:24,733 INFO L462 AbstractCegarLoop]: Abstraction has 1342 states and 1892 transitions. [2019-11-07 00:55:24,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:55:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1892 transitions. [2019-11-07 00:55:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-11-07 00:55:24,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:24,743 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:24,743 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:24,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1823902781, now seen corresponding path program 1 times [2019-11-07 00:55:24,744 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:24,744 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608101741] [2019-11-07 00:55:24,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:55:25,118 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608101741] [2019-11-07 00:55:25,118 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:25,118 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:55:25,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640158853] [2019-11-07 00:55:25,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:55:25,119 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:25,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:55:25,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:55:25,120 INFO L87 Difference]: Start difference. First operand 1342 states and 1892 transitions. Second operand 9 states. [2019-11-07 00:55:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:25,532 INFO L93 Difference]: Finished difference Result 2053 states and 2833 transitions. [2019-11-07 00:55:25,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:55:25,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2019-11-07 00:55:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:25,544 INFO L225 Difference]: With dead ends: 2053 [2019-11-07 00:55:25,544 INFO L226 Difference]: Without dead ends: 1316 [2019-11-07 00:55:25,548 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:55:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2019-11-07 00:55:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1312. [2019-11-07 00:55:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-11-07 00:55:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1841 transitions. [2019-11-07 00:55:25,629 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1841 transitions. Word has length 287 [2019-11-07 00:55:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:25,629 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1841 transitions. [2019-11-07 00:55:25,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:55:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1841 transitions. [2019-11-07 00:55:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-11-07 00:55:25,638 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:25,638 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:25,638 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:25,639 INFO L82 PathProgramCache]: Analyzing trace with hash 58369020, now seen corresponding path program 1 times [2019-11-07 00:55:25,639 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:25,639 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396510155] [2019-11-07 00:55:25,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:55:26,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396510155] [2019-11-07 00:55:26,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512822728] [2019-11-07 00:55:26,239 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 [2019-11-07 00:55:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:26,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:27,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:55:27,421 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:28,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:28,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:28,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:55:28,468 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:55:28,468 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:55:28,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77304359] [2019-11-07 00:55:28,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:55:28,473 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:28,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:55:28,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:28,475 INFO L87 Difference]: Start difference. First operand 1312 states and 1841 transitions. Second operand 9 states. [2019-11-07 00:55:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:30,740 INFO L93 Difference]: Finished difference Result 2602 states and 3662 transitions. [2019-11-07 00:55:30,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:55:30,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-11-07 00:55:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:30,753 INFO L225 Difference]: With dead ends: 2602 [2019-11-07 00:55:30,753 INFO L226 Difference]: Without dead ends: 1326 [2019-11-07 00:55:30,760 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:55:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2019-11-07 00:55:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2019-11-07 00:55:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2019-11-07 00:55:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1859 transitions. [2019-11-07 00:55:30,842 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1859 transitions. Word has length 280 [2019-11-07 00:55:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:30,843 INFO L462 AbstractCegarLoop]: Abstraction has 1326 states and 1859 transitions. [2019-11-07 00:55:30,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:55:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1859 transitions. [2019-11-07 00:55:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-11-07 00:55:30,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:30,856 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:31,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:31,072 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash 368278097, now seen corresponding path program 1 times [2019-11-07 00:55:31,073 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:31,073 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275911544] [2019-11-07 00:55:31,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:55:31,646 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275911544] [2019-11-07 00:55:31,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803269489] [2019-11-07 00:55:31,647 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 [2019-11-07 00:55:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:32,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:55:32,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:55:32,504 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:32,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:33,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:55:33,124 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:55:33,125 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:55:33,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42986747] [2019-11-07 00:55:33,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:55:33,126 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:55:33,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:55:33,127 INFO L87 Difference]: Start difference. First operand 1326 states and 1859 transitions. Second operand 7 states. [2019-11-07 00:55:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:34,643 INFO L93 Difference]: Finished difference Result 2605 states and 3671 transitions. [2019-11-07 00:55:34,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:55:34,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-11-07 00:55:34,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:34,653 INFO L225 Difference]: With dead ends: 2605 [2019-11-07 00:55:34,653 INFO L226 Difference]: Without dead ends: 1330 [2019-11-07 00:55:34,658 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:55:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2019-11-07 00:55:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2019-11-07 00:55:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2019-11-07 00:55:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1864 transitions. [2019-11-07 00:55:34,732 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1864 transitions. Word has length 281 [2019-11-07 00:55:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:34,733 INFO L462 AbstractCegarLoop]: Abstraction has 1330 states and 1864 transitions. [2019-11-07 00:55:34,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:55:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1864 transitions. [2019-11-07 00:55:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-11-07 00:55:34,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:34,742 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:34,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:34,997 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash 346340097, now seen corresponding path program 1 times [2019-11-07 00:55:34,998 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:34,998 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101419020] [2019-11-07 00:55:34,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:55:35,510 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101419020] [2019-11-07 00:55:35,510 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627900416] [2019-11-07 00:55:35,511 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 [2019-11-07 00:55:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:36,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:36,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:55:36,450 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:37,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:37,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:37,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:55:37,418 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:37,418 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:55:37,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248888923] [2019-11-07 00:55:37,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:55:37,422 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:37,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:55:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:55:37,424 INFO L87 Difference]: Start difference. First operand 1330 states and 1864 transitions. Second operand 16 states. [2019-11-07 00:55:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:39,505 INFO L93 Difference]: Finished difference Result 2611 states and 3670 transitions. [2019-11-07 00:55:39,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:55:39,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-11-07 00:55:39,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:39,516 INFO L225 Difference]: With dead ends: 2611 [2019-11-07 00:55:39,516 INFO L226 Difference]: Without dead ends: 1342 [2019-11-07 00:55:39,526 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:55:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-11-07 00:55:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-11-07 00:55:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-11-07 00:55:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1875 transitions. [2019-11-07 00:55:39,600 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1875 transitions. Word has length 282 [2019-11-07 00:55:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:39,601 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1875 transitions. [2019-11-07 00:55:39,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:55:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1875 transitions. [2019-11-07 00:55:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-11-07 00:55:39,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:39,612 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:55:39,821 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:39,821 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:39,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:39,822 INFO L82 PathProgramCache]: Analyzing trace with hash 967074738, now seen corresponding path program 2 times [2019-11-07 00:55:39,822 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:39,823 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453383146] [2019-11-07 00:55:39,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 00:55:40,332 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453383146] [2019-11-07 00:55:40,332 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92363902] [2019-11-07 00:55:40,332 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 [2019-11-07 00:55:41,024 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:55:41,024 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:55:41,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:55:41,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:55:41,241 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:41,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:41,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:55:41,949 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:41,949 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:55:41,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810184975] [2019-11-07 00:55:41,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:55:41,951 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:41,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:55:41,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:55:41,952 INFO L87 Difference]: Start difference. First operand 1340 states and 1875 transitions. Second operand 12 states. [2019-11-07 00:55:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:43,035 INFO L93 Difference]: Finished difference Result 2602 states and 3658 transitions. [2019-11-07 00:55:43,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:55:43,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-11-07 00:55:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:43,045 INFO L225 Difference]: With dead ends: 2602 [2019-11-07 00:55:43,045 INFO L226 Difference]: Without dead ends: 1342 [2019-11-07 00:55:43,050 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-11-07 00:55:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-11-07 00:55:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-11-07 00:55:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1874 transitions. [2019-11-07 00:55:43,110 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1874 transitions. Word has length 283 [2019-11-07 00:55:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:43,112 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1874 transitions. [2019-11-07 00:55:43,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:55:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1874 transitions. [2019-11-07 00:55:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-11-07 00:55:43,120 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:43,120 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:43,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:43,338 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:43,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:43,338 INFO L82 PathProgramCache]: Analyzing trace with hash -712437890, now seen corresponding path program 3 times [2019-11-07 00:55:43,338 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:43,338 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858681522] [2019-11-07 00:55:43,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:55:43,717 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858681522] [2019-11-07 00:55:43,718 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22115293] [2019-11-07 00:55:43,718 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:44,467 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:55:44,467 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:55:44,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:55:44,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:55:44,718 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:45,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:55:45,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:45,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:55:45,642 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:45,643 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-11-07 00:55:45,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56490486] [2019-11-07 00:55:45,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:55:45,644 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:45,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:55:45,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:55:45,645 INFO L87 Difference]: Start difference. First operand 1340 states and 1874 transitions. Second operand 15 states. [2019-11-07 00:55:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:47,694 INFO L93 Difference]: Finished difference Result 2609 states and 3665 transitions. [2019-11-07 00:55:47,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:55:47,694 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-11-07 00:55:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:47,704 INFO L225 Difference]: With dead ends: 2609 [2019-11-07 00:55:47,704 INFO L226 Difference]: Without dead ends: 1344 [2019-11-07 00:55:47,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:55:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2019-11-07 00:55:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2019-11-07 00:55:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-11-07 00:55:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1873 transitions. [2019-11-07 00:55:47,762 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1873 transitions. Word has length 284 [2019-11-07 00:55:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:47,762 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1873 transitions. [2019-11-07 00:55:47,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:55:47,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1873 transitions. [2019-11-07 00:55:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-11-07 00:55:47,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:47,770 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:47,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:47,982 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:47,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:47,982 INFO L82 PathProgramCache]: Analyzing trace with hash 848484596, now seen corresponding path program 1 times [2019-11-07 00:55:47,982 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:47,982 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787410070] [2019-11-07 00:55:47,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:55:48,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787410070] [2019-11-07 00:55:48,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336754635] [2019-11-07 00:55:48,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:55:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:49,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:55:49,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:55:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:55:49,494 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:55:49,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:50,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:55:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:55:50,132 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:55:50,132 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-11-07 00:55:50,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552937981] [2019-11-07 00:55:50,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:55:50,134 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:55:50,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:55:50,135 INFO L87 Difference]: Start difference. First operand 1340 states and 1873 transitions. Second operand 11 states.