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_spec9_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:48,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:49,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:49,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:49,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:49,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:49,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:49,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:49,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:49,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:49,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:49,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:49,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:49,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:49,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:49,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:49,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:49,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:49,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:49,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:49,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:49,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:49,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:49,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:49,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:49,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:49,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:49,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:49,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:49,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:49,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:49,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:49,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:49,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:49,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:49,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:49,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:49,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:49,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:49,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:49,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:49,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:49,110 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:49,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:49,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:49,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:49,113 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:49,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:49,114 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:49,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:49,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:49,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:49,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:49,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:49,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:49,115 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:49,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:49,116 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:49,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:49,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:49,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:49,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:49,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:49,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:49,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:49,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:49,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:49,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:49,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:49,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:49,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:49,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:49,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:49,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:49,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:49,465 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:49,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-10-13 21:18:49,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fbadb34/d96412268b064e1e851f195af00d9e2a/FLAG60d76968a [2019-10-13 21:18:50,185 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:50,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-10-13 21:18:50,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fbadb34/d96412268b064e1e851f195af00d9e2a/FLAG60d76968a [2019-10-13 21:18:50,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fbadb34/d96412268b064e1e851f195af00d9e2a [2019-10-13 21:18:50,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:50,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:50,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:50,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:50,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:50,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:50" (1/1) ... [2019-10-13 21:18:50,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:50, skipping insertion in model container [2019-10-13 21:18:50,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:50" (1/1) ... [2019-10-13 21:18:50,398 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:50,478 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:51,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:51,441 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:51,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:51,690 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:51,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51 WrapperNode [2019-10-13 21:18:51,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:51,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:51,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:51,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:51,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... [2019-10-13 21:18:51,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:51,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:51,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:51,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:51,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:51,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:51,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:51,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:51,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:51,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:51,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:51,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:51,998 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:51,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:51,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:51,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:51,999 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:51,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:51,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:51,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:51,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:52,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:52,000 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:52,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:52,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:52,006 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:52,006 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:52,006 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:52,008 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:52,008 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:52,008 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:52,008 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:52,026 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:52,027 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:18:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:52,030 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:52,031 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:54,126 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:54,126 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:54,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:54 BoogieIcfgContainer [2019-10-13 21:18:54,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:54,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:54,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:54,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:54,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:50" (1/3) ... [2019-10-13 21:18:54,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba2154c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:54, skipping insertion in model container [2019-10-13 21:18:54,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:51" (2/3) ... [2019-10-13 21:18:54,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba2154c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:54, skipping insertion in model container [2019-10-13 21:18:54,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:54" (3/3) ... [2019-10-13 21:18:54,137 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product14.cil.c [2019-10-13 21:18:54,147 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:54,161 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:54,175 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:54,220 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:54,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:54,221 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:54,221 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:54,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:54,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:54,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:54,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2019-10-13 21:18:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:18:54,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:54,297 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:54,301 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:54,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2026641383, now seen corresponding path program 1 times [2019-10-13 21:18:54,321 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:54,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268051428] [2019-10-13 21:18:54,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:55,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268051428] [2019-10-13 21:18:55,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:55,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:55,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37902278] [2019-10-13 21:18:55,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:55,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:55,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:55,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:55,031 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 2 states. [2019-10-13 21:18:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:55,102 INFO L93 Difference]: Finished difference Result 695 states and 958 transitions. [2019-10-13 21:18:55,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:55,104 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:18:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:55,135 INFO L225 Difference]: With dead ends: 695 [2019-10-13 21:18:55,136 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 21:18:55,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 21:18:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-13 21:18:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-13 21:18:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 651 transitions. [2019-10-13 21:18:55,303 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 651 transitions. Word has length 154 [2019-10-13 21:18:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:55,307 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 651 transitions. [2019-10-13 21:18:55,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 651 transitions. [2019-10-13 21:18:55,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:18:55,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:55,320 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:55,320 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:55,322 INFO L82 PathProgramCache]: Analyzing trace with hash 918383061, now seen corresponding path program 1 times [2019-10-13 21:18:55,322 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:55,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789264916] [2019-10-13 21:18:55,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:55,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789264916] [2019-10-13 21:18:55,652 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:55,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:55,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986049914] [2019-10-13 21:18:55,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:55,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:55,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:55,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:55,661 INFO L87 Difference]: Start difference. First operand 470 states and 651 transitions. Second operand 3 states. [2019-10-13 21:18:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:55,740 INFO L93 Difference]: Finished difference Result 678 states and 924 transitions. [2019-10-13 21:18:55,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:55,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:18:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:55,748 INFO L225 Difference]: With dead ends: 678 [2019-10-13 21:18:55,748 INFO L226 Difference]: Without dead ends: 473 [2019-10-13 21:18:55,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-13 21:18:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2019-10-13 21:18:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-10-13 21:18:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 653 transitions. [2019-10-13 21:18:55,795 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 653 transitions. Word has length 155 [2019-10-13 21:18:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:55,796 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 653 transitions. [2019-10-13 21:18:55,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 653 transitions. [2019-10-13 21:18:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:18:55,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:55,802 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:55,803 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:55,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1716493705, now seen corresponding path program 1 times [2019-10-13 21:18:55,803 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:55,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85819756] [2019-10-13 21:18:55,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:56,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85819756] [2019-10-13 21:18:56,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:56,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:56,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550697494] [2019-10-13 21:18:56,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:56,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:56,060 INFO L87 Difference]: Start difference. First operand 472 states and 653 transitions. Second operand 3 states. [2019-10-13 21:18:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:56,112 INFO L93 Difference]: Finished difference Result 920 states and 1304 transitions. [2019-10-13 21:18:56,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:56,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:18:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:56,121 INFO L225 Difference]: With dead ends: 920 [2019-10-13 21:18:56,122 INFO L226 Difference]: Without dead ends: 513 [2019-10-13 21:18:56,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-13 21:18:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-10-13 21:18:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-13 21:18:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 722 transitions. [2019-10-13 21:18:56,173 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 722 transitions. Word has length 161 [2019-10-13 21:18:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:56,176 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 722 transitions. [2019-10-13 21:18:56,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 722 transitions. [2019-10-13 21:18:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:18:56,187 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:56,188 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:56,188 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:56,189 INFO L82 PathProgramCache]: Analyzing trace with hash 121065149, now seen corresponding path program 1 times [2019-10-13 21:18:56,190 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:56,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356006541] [2019-10-13 21:18:56,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:56,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:56,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:56,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356006541] [2019-10-13 21:18:56,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:56,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:56,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361964583] [2019-10-13 21:18:56,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:56,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:56,540 INFO L87 Difference]: Start difference. First operand 512 states and 722 transitions. Second operand 3 states. [2019-10-13 21:18:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:56,587 INFO L93 Difference]: Finished difference Result 818 states and 1146 transitions. [2019-10-13 21:18:56,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:56,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:18:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:56,595 INFO L225 Difference]: With dead ends: 818 [2019-10-13 21:18:56,596 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:18:56,597 INFO L600 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 [2019-10-13 21:18:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:18:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 625. [2019-10-13 21:18:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-13 21:18:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 884 transitions. [2019-10-13 21:18:56,630 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 884 transitions. Word has length 162 [2019-10-13 21:18:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:56,631 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 884 transitions. [2019-10-13 21:18:56,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 884 transitions. [2019-10-13 21:18:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2019-10-13 21:18:56,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:56,638 INFO L380 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] [2019-10-13 21:18:56,638 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:56,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1610932169, now seen corresponding path program 1 times [2019-10-13 21:18:56,639 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:56,640 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751198957] [2019-10-13 21:18:56,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:56,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:56,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:56,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751198957] [2019-10-13 21:18:56,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:56,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:56,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788716471] [2019-10-13 21:18:56,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:56,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:56,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:56,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:56,945 INFO L87 Difference]: Start difference. First operand 625 states and 884 transitions. Second operand 6 states. [2019-10-13 21:18:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:57,510 INFO L93 Difference]: Finished difference Result 1495 states and 2116 transitions. [2019-10-13 21:18:57,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:57,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2019-10-13 21:18:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:57,564 INFO L225 Difference]: With dead ends: 1495 [2019-10-13 21:18:57,564 INFO L226 Difference]: Without dead ends: 1201 [2019-10-13 21:18:57,566 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2019-10-13 21:18:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1190. [2019-10-13 21:18:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2019-10-13 21:18:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1704 transitions. [2019-10-13 21:18:57,623 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1704 transitions. Word has length 275 [2019-10-13 21:18:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:57,625 INFO L462 AbstractCegarLoop]: Abstraction has 1190 states and 1704 transitions. [2019-10-13 21:18:57,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1704 transitions. [2019-10-13 21:18:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2019-10-13 21:18:57,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:57,633 INFO L380 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] [2019-10-13 21:18:57,633 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:57,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1309125253, now seen corresponding path program 1 times [2019-10-13 21:18:57,634 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:57,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909618335] [2019-10-13 21:18:57,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:57,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:57,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:57,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909618335] [2019-10-13 21:18:57,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:57,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:18:57,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386044215] [2019-10-13 21:18:57,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:57,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:57,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:57,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:57,907 INFO L87 Difference]: Start difference. First operand 1190 states and 1704 transitions. Second operand 9 states. [2019-10-13 21:18:58,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:58,334 INFO L93 Difference]: Finished difference Result 1775 states and 2491 transitions. [2019-10-13 21:18:58,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:58,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 276 [2019-10-13 21:18:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:58,345 INFO L225 Difference]: With dead ends: 1775 [2019-10-13 21:18:58,346 INFO L226 Difference]: Without dead ends: 1164 [2019-10-13 21:18:58,349 INFO L600 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 [2019-10-13 21:18:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2019-10-13 21:18:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1160. [2019-10-13 21:18:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-10-13 21:18:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1653 transitions. [2019-10-13 21:18:58,416 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1653 transitions. Word has length 276 [2019-10-13 21:18:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:58,417 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1653 transitions. [2019-10-13 21:18:58,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1653 transitions. [2019-10-13 21:18:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-10-13 21:18:58,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:58,426 INFO L380 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] [2019-10-13 21:18:58,426 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:58,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:58,427 INFO L82 PathProgramCache]: Analyzing trace with hash -866990585, now seen corresponding path program 1 times [2019-10-13 21:18:58,427 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:58,427 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364201549] [2019-10-13 21:18:58,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:58,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:58,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:59,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364201549] [2019-10-13 21:18:59,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181873000] [2019-10-13 21:18:59,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:59,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:59,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:00,080 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:00,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:00,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:00,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:01,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:01,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21, 9] total 34 [2019-10-13 21:19:01,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585375168] [2019-10-13 21:19:01,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:01,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:01,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:01,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:01,117 INFO L87 Difference]: Start difference. First operand 1160 states and 1653 transitions. Second operand 9 states. [2019-10-13 21:19:02,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:02,947 INFO L93 Difference]: Finished difference Result 2298 states and 3286 transitions. [2019-10-13 21:19:02,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:02,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2019-10-13 21:19:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:02,955 INFO L225 Difference]: With dead ends: 2298 [2019-10-13 21:19:02,955 INFO L226 Difference]: Without dead ends: 1174 [2019-10-13 21:19:02,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 525 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:19:02,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-10-13 21:19:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2019-10-13 21:19:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-10-13 21:19:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1671 transitions. [2019-10-13 21:19:03,015 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1671 transitions. Word has length 269 [2019-10-13 21:19:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:03,016 INFO L462 AbstractCegarLoop]: Abstraction has 1174 states and 1671 transitions. [2019-10-13 21:19:03,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1671 transitions. [2019-10-13 21:19:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-10-13 21:19:03,023 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:03,023 INFO L380 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] [2019-10-13 21:19:03,232 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:03,232 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:03,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1787642265, now seen corresponding path program 1 times [2019-10-13 21:19:03,234 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:03,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901778113] [2019-10-13 21:19:03,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:03,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901778113] [2019-10-13 21:19:03,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141887269] [2019-10-13 21:19:03,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:04,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:04,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:04,674 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:05,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:05,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:05,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:05,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21, 7] total 30 [2019-10-13 21:19:05,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277455484] [2019-10-13 21:19:05,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:05,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:05,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:05,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:19:05,313 INFO L87 Difference]: Start difference. First operand 1174 states and 1671 transitions. Second operand 7 states. [2019-10-13 21:19:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:06,432 INFO L93 Difference]: Finished difference Result 2301 states and 3295 transitions. [2019-10-13 21:19:06,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:06,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2019-10-13 21:19:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:06,442 INFO L225 Difference]: With dead ends: 2301 [2019-10-13 21:19:06,442 INFO L226 Difference]: Without dead ends: 1178 [2019-10-13 21:19:06,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 532 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-10-13 21:19:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2019-10-13 21:19:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2019-10-13 21:19:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1676 transitions. [2019-10-13 21:19:06,516 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1676 transitions. Word has length 270 [2019-10-13 21:19:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:06,517 INFO L462 AbstractCegarLoop]: Abstraction has 1178 states and 1676 transitions. [2019-10-13 21:19:06,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1676 transitions. [2019-10-13 21:19:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2019-10-13 21:19:06,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:06,526 INFO L380 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] [2019-10-13 21:19:06,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:06,734 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash -317122592, now seen corresponding path program 1 times [2019-10-13 21:19:06,735 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:06,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286265620] [2019-10-13 21:19:06,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:06,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:06,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:07,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286265620] [2019-10-13 21:19:07,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128747223] [2019-10-13 21:19:07,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:07,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:07,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:08,181 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:08,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:08,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:08,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:09,011 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:09,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 35 [2019-10-13 21:19:09,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911436415] [2019-10-13 21:19:09,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:09,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:09,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:09,014 INFO L87 Difference]: Start difference. First operand 1178 states and 1676 transitions. Second operand 16 states. [2019-10-13 21:19:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,882 INFO L93 Difference]: Finished difference Result 2307 states and 3294 transitions. [2019-10-13 21:19:10,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:10,883 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 271 [2019-10-13 21:19:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,890 INFO L225 Difference]: With dead ends: 2307 [2019-10-13 21:19:10,890 INFO L226 Difference]: Without dead ends: 1190 [2019-10-13 21:19:10,895 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-10-13 21:19:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2019-10-13 21:19:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-13 21:19:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1687 transitions. [2019-10-13 21:19:10,992 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1687 transitions. Word has length 271 [2019-10-13 21:19:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,994 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1687 transitions. [2019-10-13 21:19:10,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1687 transitions. [2019-10-13 21:19:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-10-13 21:19:11,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:11,001 INFO L380 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] [2019-10-13 21:19:11,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:11,209 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1303858140, now seen corresponding path program 2 times [2019-10-13 21:19:11,211 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:11,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209322340] [2019-10-13 21:19:11,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:19:11,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209322340] [2019-10-13 21:19:11,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742782222] [2019-10-13 21:19:11,724 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:12,336 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:12,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:12,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:12,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:12,536 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:13,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:13,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:13,224 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:13,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 31 [2019-10-13 21:19:13,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351890204] [2019-10-13 21:19:13,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:13,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:13,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:13,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:13,227 INFO L87 Difference]: Start difference. First operand 1188 states and 1687 transitions. Second operand 12 states. [2019-10-13 21:19:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:14,909 INFO L93 Difference]: Finished difference Result 2298 states and 3282 transitions. [2019-10-13 21:19:14,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:14,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 272 [2019-10-13 21:19:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:14,917 INFO L225 Difference]: With dead ends: 2298 [2019-10-13 21:19:14,917 INFO L226 Difference]: Without dead ends: 1190 [2019-10-13 21:19:14,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 536 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-10-13 21:19:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2019-10-13 21:19:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-13 21:19:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1686 transitions. [2019-10-13 21:19:14,973 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1686 transitions. Word has length 272 [2019-10-13 21:19:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:14,976 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1686 transitions. [2019-10-13 21:19:14,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1686 transitions. [2019-10-13 21:19:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-13 21:19:14,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:14,986 INFO L380 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] [2019-10-13 21:19:15,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:15,204 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1147644025, now seen corresponding path program 3 times [2019-10-13 21:19:15,205 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890277906] [2019-10-13 21:19:15,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:15,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890277906] [2019-10-13 21:19:15,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787470111] [2019-10-13 21:19:15,692 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 [2019-10-13 21:19:16,311 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:16,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:16,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:16,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:16,673 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:17,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:17,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:17,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:17,585 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:17,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 34 [2019-10-13 21:19:17,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549642322] [2019-10-13 21:19:17,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:17,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:17,588 INFO L87 Difference]: Start difference. First operand 1188 states and 1686 transitions. Second operand 15 states. [2019-10-13 21:19:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:19,426 INFO L93 Difference]: Finished difference Result 2305 states and 3289 transitions. [2019-10-13 21:19:19,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:19,427 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2019-10-13 21:19:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:19,437 INFO L225 Difference]: With dead ends: 2305 [2019-10-13 21:19:19,437 INFO L226 Difference]: Without dead ends: 1192 [2019-10-13 21:19:19,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 533 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2019-10-13 21:19:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1188. [2019-10-13 21:19:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-13 21:19:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1685 transitions. [2019-10-13 21:19:19,485 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1685 transitions. Word has length 273 [2019-10-13 21:19:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:19,485 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1685 transitions. [2019-10-13 21:19:19,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1685 transitions. [2019-10-13 21:19:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-10-13 21:19:19,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:19,493 INFO L380 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] [2019-10-13 21:19:19,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:19,700 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:19,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1154209828, now seen corresponding path program 1 times [2019-10-13 21:19:19,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:19,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000982313] [2019-10-13 21:19:19,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:20,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000982313] [2019-10-13 21:19:20,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890005483] [2019-10-13 21:19:20,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:20,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:20,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:21,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:21,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:21,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:21,650 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:21,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 30 [2019-10-13 21:19:21,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996750603] [2019-10-13 21:19:21,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:21,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:21,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:19:21,652 INFO L87 Difference]: Start difference. First operand 1188 states and 1685 transitions. Second operand 11 states.