/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:12,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:12,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:12,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:12,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:12,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:12,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:12,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:12,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:12,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:12,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:12,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:12,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:12,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:12,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:12,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:12,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:12,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:12,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:12,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:12,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:12,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:12,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:12,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:12,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:12,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:12,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:12,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:12,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:12,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:12,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:12,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:12,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:12,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:12,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:12,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:12,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:12,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:12,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:12,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:12,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:12,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:49:12,135 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:12,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:12,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:12,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:12,140 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:12,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:12,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:12,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:12,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:12,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:12,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:12,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:12,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:12,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:12,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:12,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:12,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:12,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:12,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:12,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:12,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:12,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:12,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:12,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:12,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:12,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:12,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:12,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:12,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:49:12,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:12,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:12,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:12,480 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:12,480 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:12,481 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-11-07 00:49:12,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af47774fc/2c93a6ff17bd4d47b133b655d7da8a2a/FLAGbe1823aba [2019-11-07 00:49:13,143 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:13,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2019-11-07 00:49:13,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af47774fc/2c93a6ff17bd4d47b133b655d7da8a2a/FLAGbe1823aba [2019-11-07 00:49:13,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af47774fc/2c93a6ff17bd4d47b133b655d7da8a2a [2019-11-07 00:49:13,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:13,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:13,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:13,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:13,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:13,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:13" (1/1) ... [2019-11-07 00:49:13,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c419196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:13, skipping insertion in model container [2019-11-07 00:49:13,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:13" (1/1) ... [2019-11-07 00:49:13,321 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:13,401 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:14,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:14,219 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:14,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:14,474 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:14,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14 WrapperNode [2019-11-07 00:49:14,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:14,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:14,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:14,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:14,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... [2019-11-07 00:49:14,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:14,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:14,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:14,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:14,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:49:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:49:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:49:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:49:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-11-07 00:49:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:49:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:14,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:14,748 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:49:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:14,752 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:14,756 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:14,760 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:14,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-11-07 00:49:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:16,804 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:16,805 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:16,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:16 BoogieIcfgContainer [2019-11-07 00:49:16,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:16,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:16,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:16,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:16,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:13" (1/3) ... [2019-11-07 00:49:16,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fefddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:16, skipping insertion in model container [2019-11-07 00:49:16,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:14" (2/3) ... [2019-11-07 00:49:16,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fefddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:16, skipping insertion in model container [2019-11-07 00:49:16,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:16" (3/3) ... [2019-11-07 00:49:16,817 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2019-11-07 00:49:16,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:16,842 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:16,856 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:16,900 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:16,900 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:16,900 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:16,900 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:16,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:16,901 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:16,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:16,901 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states. [2019-11-07 00:49:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-07 00:49:16,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:16,982 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:16,988 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:16,995 INFO L82 PathProgramCache]: Analyzing trace with hash 4882894, now seen corresponding path program 1 times [2019-11-07 00:49:17,005 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:17,006 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393994875] [2019-11-07 00:49:17,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:17,711 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393994875] [2019-11-07 00:49:17,712 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:17,712 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:17,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962235938] [2019-11-07 00:49:17,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:17,721 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:17,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:17,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:17,739 INFO L87 Difference]: Start difference. First operand 484 states. Second operand 2 states. [2019-11-07 00:49:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:17,816 INFO L93 Difference]: Finished difference Result 676 states and 891 transitions. [2019-11-07 00:49:17,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:17,818 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-11-07 00:49:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:17,854 INFO L225 Difference]: With dead ends: 676 [2019-11-07 00:49:17,860 INFO L226 Difference]: Without dead ends: 444 [2019-11-07 00:49:17,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-11-07 00:49:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2019-11-07 00:49:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2019-11-07 00:49:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 588 transitions. [2019-11-07 00:49:17,980 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 588 transitions. Word has length 179 [2019-11-07 00:49:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:17,983 INFO L462 AbstractCegarLoop]: Abstraction has 444 states and 588 transitions. [2019-11-07 00:49:17,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 588 transitions. [2019-11-07 00:49:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:49:17,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:17,991 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:17,993 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:17,993 INFO L82 PathProgramCache]: Analyzing trace with hash -372709569, now seen corresponding path program 1 times [2019-11-07 00:49:17,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:17,995 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514557649] [2019-11-07 00:49:17,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:18,324 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514557649] [2019-11-07 00:49:18,324 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:18,324 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:18,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561473771] [2019-11-07 00:49:18,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:18,331 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:18,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:18,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:18,332 INFO L87 Difference]: Start difference. First operand 444 states and 588 transitions. Second operand 3 states. [2019-11-07 00:49:18,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:18,406 INFO L93 Difference]: Finished difference Result 659 states and 856 transitions. [2019-11-07 00:49:18,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:18,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:49:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:18,416 INFO L225 Difference]: With dead ends: 659 [2019-11-07 00:49:18,416 INFO L226 Difference]: Without dead ends: 447 [2019-11-07 00:49:18,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-11-07 00:49:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2019-11-07 00:49:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-11-07 00:49:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 590 transitions. [2019-11-07 00:49:18,464 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 590 transitions. Word has length 180 [2019-11-07 00:49:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:18,468 INFO L462 AbstractCegarLoop]: Abstraction has 446 states and 590 transitions. [2019-11-07 00:49:18,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 590 transitions. [2019-11-07 00:49:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:49:18,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:18,476 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:18,476 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1430696527, now seen corresponding path program 1 times [2019-11-07 00:49:18,477 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:18,478 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183553306] [2019-11-07 00:49:18,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:18,680 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183553306] [2019-11-07 00:49:18,680 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:18,680 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:18,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185351865] [2019-11-07 00:49:18,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:18,685 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:18,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:18,686 INFO L87 Difference]: Start difference. First operand 446 states and 590 transitions. Second operand 3 states. [2019-11-07 00:49:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:18,725 INFO L93 Difference]: Finished difference Result 868 states and 1178 transitions. [2019-11-07 00:49:18,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:18,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-11-07 00:49:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:18,730 INFO L225 Difference]: With dead ends: 868 [2019-11-07 00:49:18,730 INFO L226 Difference]: Without dead ends: 487 [2019-11-07 00:49:18,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2019-11-07 00:49:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2019-11-07 00:49:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-11-07 00:49:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 659 transitions. [2019-11-07 00:49:18,754 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 659 transitions. Word has length 190 [2019-11-07 00:49:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:18,754 INFO L462 AbstractCegarLoop]: Abstraction has 486 states and 659 transitions. [2019-11-07 00:49:18,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 659 transitions. [2019-11-07 00:49:18,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 00:49:18,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:18,759 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:18,759 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1249737572, now seen corresponding path program 1 times [2019-11-07 00:49:18,760 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:18,760 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192557341] [2019-11-07 00:49:18,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:19,048 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192557341] [2019-11-07 00:49:19,048 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:19,048 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:19,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337995993] [2019-11-07 00:49:19,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:19,050 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:19,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:19,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:19,058 INFO L87 Difference]: Start difference. First operand 486 states and 659 transitions. Second operand 3 states. [2019-11-07 00:49:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:19,108 INFO L93 Difference]: Finished difference Result 985 states and 1380 transitions. [2019-11-07 00:49:19,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:19,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-11-07 00:49:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:19,122 INFO L225 Difference]: With dead ends: 985 [2019-11-07 00:49:19,122 INFO L226 Difference]: Without dead ends: 564 [2019-11-07 00:49:19,128 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-11-07 00:49:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 563. [2019-11-07 00:49:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2019-11-07 00:49:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 791 transitions. [2019-11-07 00:49:19,165 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 791 transitions. Word has length 191 [2019-11-07 00:49:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:19,166 INFO L462 AbstractCegarLoop]: Abstraction has 563 states and 791 transitions. [2019-11-07 00:49:19,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 791 transitions. [2019-11-07 00:49:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:49:19,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:19,174 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:19,174 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:19,175 INFO L82 PathProgramCache]: Analyzing trace with hash -774880689, now seen corresponding path program 1 times [2019-11-07 00:49:19,175 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:19,176 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437511131] [2019-11-07 00:49:19,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:19,387 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437511131] [2019-11-07 00:49:19,387 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:19,387 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:19,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679922595] [2019-11-07 00:49:19,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:19,388 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:19,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:19,389 INFO L87 Difference]: Start difference. First operand 563 states and 791 transitions. Second operand 3 states. [2019-11-07 00:49:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:19,428 INFO L93 Difference]: Finished difference Result 1210 states and 1766 transitions. [2019-11-07 00:49:19,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:19,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-07 00:49:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:19,434 INFO L225 Difference]: With dead ends: 1210 [2019-11-07 00:49:19,434 INFO L226 Difference]: Without dead ends: 712 [2019-11-07 00:49:19,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-11-07 00:49:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 711. [2019-11-07 00:49:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-11-07 00:49:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1043 transitions. [2019-11-07 00:49:19,478 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1043 transitions. Word has length 192 [2019-11-07 00:49:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:19,479 INFO L462 AbstractCegarLoop]: Abstraction has 711 states and 1043 transitions. [2019-11-07 00:49:19,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1043 transitions. [2019-11-07 00:49:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 00:49:19,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:19,483 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:19,484 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash 569944220, now seen corresponding path program 1 times [2019-11-07 00:49:19,484 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:19,485 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956116982] [2019-11-07 00:49:19,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:19,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956116982] [2019-11-07 00:49:19,683 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:19,683 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:19,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875529752] [2019-11-07 00:49:19,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:19,684 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:19,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:19,685 INFO L87 Difference]: Start difference. First operand 711 states and 1043 transitions. Second operand 3 states. [2019-11-07 00:49:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:19,727 INFO L93 Difference]: Finished difference Result 1642 states and 2502 transitions. [2019-11-07 00:49:19,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:19,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-07 00:49:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:19,735 INFO L225 Difference]: With dead ends: 1642 [2019-11-07 00:49:19,735 INFO L226 Difference]: Without dead ends: 996 [2019-11-07 00:49:19,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-11-07 00:49:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 995. [2019-11-07 00:49:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-11-07 00:49:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1523 transitions. [2019-11-07 00:49:19,787 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1523 transitions. Word has length 193 [2019-11-07 00:49:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:19,787 INFO L462 AbstractCegarLoop]: Abstraction has 995 states and 1523 transitions. [2019-11-07 00:49:19,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1523 transitions. [2019-11-07 00:49:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:49:19,795 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:19,796 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:19,796 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:19,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2027889146, now seen corresponding path program 1 times [2019-11-07 00:49:19,797 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:19,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669201424] [2019-11-07 00:49:19,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:20,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669201424] [2019-11-07 00:49:20,010 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:20,010 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:49:20,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461290015] [2019-11-07 00:49:20,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:49:20,012 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:20,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:49:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:20,013 INFO L87 Difference]: Start difference. First operand 995 states and 1523 transitions. Second operand 8 states. [2019-11-07 00:49:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:20,074 INFO L93 Difference]: Finished difference Result 1194 states and 1776 transitions. [2019-11-07 00:49:20,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:49:20,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-11-07 00:49:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:20,081 INFO L225 Difference]: With dead ends: 1194 [2019-11-07 00:49:20,082 INFO L226 Difference]: Without dead ends: 995 [2019-11-07 00:49:20,083 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-11-07 00:49:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2019-11-07 00:49:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2019-11-07 00:49:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1522 transitions. [2019-11-07 00:49:20,223 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1522 transitions. Word has length 196 [2019-11-07 00:49:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:20,224 INFO L462 AbstractCegarLoop]: Abstraction has 995 states and 1522 transitions. [2019-11-07 00:49:20,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:49:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1522 transitions. [2019-11-07 00:49:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:49:20,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:20,231 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:20,231 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:20,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1861004252, now seen corresponding path program 1 times [2019-11-07 00:49:20,232 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:20,232 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938820913] [2019-11-07 00:49:20,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:20,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938820913] [2019-11-07 00:49:20,481 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:20,481 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:49:20,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806919380] [2019-11-07 00:49:20,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:20,483 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:20,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:20,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:49:20,484 INFO L87 Difference]: Start difference. First operand 995 states and 1522 transitions. Second operand 7 states. [2019-11-07 00:49:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:22,913 INFO L93 Difference]: Finished difference Result 1416 states and 2054 transitions. [2019-11-07 00:49:22,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:49:22,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-11-07 00:49:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:22,923 INFO L225 Difference]: With dead ends: 1416 [2019-11-07 00:49:22,923 INFO L226 Difference]: Without dead ends: 1209 [2019-11-07 00:49:22,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:49:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2019-11-07 00:49:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1200. [2019-11-07 00:49:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-11-07 00:49:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1779 transitions. [2019-11-07 00:49:23,016 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1779 transitions. Word has length 203 [2019-11-07 00:49:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:23,019 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1779 transitions. [2019-11-07 00:49:23,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1779 transitions. [2019-11-07 00:49:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:49:23,029 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:23,029 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:23,030 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:23,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1188466073, now seen corresponding path program 1 times [2019-11-07 00:49:23,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:23,031 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302255482] [2019-11-07 00:49:23,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:23,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302255482] [2019-11-07 00:49:23,559 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:23,559 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-11-07 00:49:23,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954640868] [2019-11-07 00:49:23,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 00:49:23,560 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 00:49:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:49:23,561 INFO L87 Difference]: Start difference. First operand 1200 states and 1779 transitions. Second operand 24 states. [2019-11-07 00:49:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:24,182 INFO L93 Difference]: Finished difference Result 1692 states and 2405 transitions. [2019-11-07 00:49:24,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-07 00:49:24,182 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 204 [2019-11-07 00:49:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:24,190 INFO L225 Difference]: With dead ends: 1692 [2019-11-07 00:49:24,190 INFO L226 Difference]: Without dead ends: 1242 [2019-11-07 00:49:24,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:49:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2019-11-07 00:49:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1238. [2019-11-07 00:49:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2019-11-07 00:49:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1823 transitions. [2019-11-07 00:49:24,252 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1823 transitions. Word has length 204 [2019-11-07 00:49:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:24,252 INFO L462 AbstractCegarLoop]: Abstraction has 1238 states and 1823 transitions. [2019-11-07 00:49:24,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-07 00:49:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1823 transitions. [2019-11-07 00:49:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-07 00:49:24,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:24,260 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:24,260 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:24,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:24,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1681156270, now seen corresponding path program 1 times [2019-11-07 00:49:24,261 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:24,261 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781599297] [2019-11-07 00:49:24,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:49:24,534 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781599297] [2019-11-07 00:49:24,535 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:24,535 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:49:24,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110180719] [2019-11-07 00:49:24,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:49:24,538 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:24,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:49:24,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:24,538 INFO L87 Difference]: Start difference. First operand 1238 states and 1823 transitions. Second operand 8 states. [2019-11-07 00:49:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:28,674 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2019-11-07 00:49:28,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:49:28,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2019-11-07 00:49:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:28,688 INFO L225 Difference]: With dead ends: 2604 [2019-11-07 00:49:28,688 INFO L226 Difference]: Without dead ends: 2176 [2019-11-07 00:49:28,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:49:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-11-07 00:49:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2162. [2019-11-07 00:49:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2162 states. [2019-11-07 00:49:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 2999 transitions. [2019-11-07 00:49:28,832 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 2999 transitions. Word has length 235 [2019-11-07 00:49:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:28,835 INFO L462 AbstractCegarLoop]: Abstraction has 2162 states and 2999 transitions. [2019-11-07 00:49:28,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:49:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 2999 transitions. [2019-11-07 00:49:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:49:28,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:28,847 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:28,847 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:28,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1634971345, now seen corresponding path program 1 times [2019-11-07 00:49:28,848 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:28,848 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089542399] [2019-11-07 00:49:28,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:49:29,320 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089542399] [2019-11-07 00:49:29,320 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:29,321 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:49:29,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718023363] [2019-11-07 00:49:29,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:49:29,322 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:29,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:49:29,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:49:29,323 INFO L87 Difference]: Start difference. First operand 2162 states and 2999 transitions. Second operand 18 states. [2019-11-07 00:49:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:29,705 INFO L93 Difference]: Finished difference Result 2816 states and 3830 transitions. [2019-11-07 00:49:29,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:49:29,705 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 236 [2019-11-07 00:49:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:29,722 INFO L225 Difference]: With dead ends: 2816 [2019-11-07 00:49:29,722 INFO L226 Difference]: Without dead ends: 1797 [2019-11-07 00:49:29,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:49:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2019-11-07 00:49:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1791. [2019-11-07 00:49:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-11-07 00:49:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2541 transitions. [2019-11-07 00:49:29,827 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2541 transitions. Word has length 236 [2019-11-07 00:49:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:29,829 INFO L462 AbstractCegarLoop]: Abstraction has 1791 states and 2541 transitions. [2019-11-07 00:49:29,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:49:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2541 transitions. [2019-11-07 00:49:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-11-07 00:49:29,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:29,839 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:29,840 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash 210736296, now seen corresponding path program 1 times [2019-11-07 00:49:29,840 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:29,840 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909787403] [2019-11-07 00:49:29,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:30,058 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909787403] [2019-11-07 00:49:30,058 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315220750] [2019-11-07 00:49:30,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:30,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:30,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:49:30,906 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:31,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:31,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:31,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:31,646 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:31,646 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:49:31,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885156260] [2019-11-07 00:49:31,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:49:31,647 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:31,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:49:31,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:49:31,648 INFO L87 Difference]: Start difference. First operand 1791 states and 2541 transitions. Second operand 9 states. [2019-11-07 00:49:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:32,769 INFO L93 Difference]: Finished difference Result 3560 states and 5062 transitions. [2019-11-07 00:49:32,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:49:32,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2019-11-07 00:49:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:32,780 INFO L225 Difference]: With dead ends: 3560 [2019-11-07 00:49:32,780 INFO L226 Difference]: Without dead ends: 1805 [2019-11-07 00:49:32,786 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 476 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:49:32,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2019-11-07 00:49:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2019-11-07 00:49:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2019-11-07 00:49:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2559 transitions. [2019-11-07 00:49:32,870 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2559 transitions. Word has length 245 [2019-11-07 00:49:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:32,870 INFO L462 AbstractCegarLoop]: Abstraction has 1805 states and 2559 transitions. [2019-11-07 00:49:32,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:49:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2559 transitions. [2019-11-07 00:49:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-11-07 00:49:32,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:32,879 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:33,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:33,096 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1010897091, now seen corresponding path program 1 times [2019-11-07 00:49:33,097 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:33,097 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354197857] [2019-11-07 00:49:33,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:33,392 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354197857] [2019-11-07 00:49:33,392 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10395664] [2019-11-07 00:49:33,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:34,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:34,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:49:34,446 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:34,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:34,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:34,902 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:34,903 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:49:34,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995010574] [2019-11-07 00:49:34,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:34,904 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:34,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:49:34,905 INFO L87 Difference]: Start difference. First operand 1805 states and 2559 transitions. Second operand 7 states. [2019-11-07 00:49:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:36,000 INFO L93 Difference]: Finished difference Result 3561 states and 5072 transitions. [2019-11-07 00:49:36,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:49:36,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2019-11-07 00:49:36,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:36,012 INFO L225 Difference]: With dead ends: 3561 [2019-11-07 00:49:36,012 INFO L226 Difference]: Without dead ends: 1807 [2019-11-07 00:49:36,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 483 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:49:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2019-11-07 00:49:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1807. [2019-11-07 00:49:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2019-11-07 00:49:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2562 transitions. [2019-11-07 00:49:36,115 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2562 transitions. Word has length 246 [2019-11-07 00:49:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:36,116 INFO L462 AbstractCegarLoop]: Abstraction has 1807 states and 2562 transitions. [2019-11-07 00:49:36,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:36,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2562 transitions. [2019-11-07 00:49:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-11-07 00:49:36,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:36,124 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:36,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:36,332 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1659960313, now seen corresponding path program 1 times [2019-11-07 00:49:36,333 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:36,333 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382780738] [2019-11-07 00:49:36,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:36,537 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382780738] [2019-11-07 00:49:36,538 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694973755] [2019-11-07 00:49:36,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:37,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:37,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:37,726 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:38,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:38,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:38,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:38,322 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:49:38,322 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:49:38,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275972553] [2019-11-07 00:49:38,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:49:38,326 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:38,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:49:38,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:49:38,327 INFO L87 Difference]: Start difference. First operand 1807 states and 2562 transitions. Second operand 16 states. [2019-11-07 00:49:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:39,958 INFO L93 Difference]: Finished difference Result 3565 states and 5066 transitions. [2019-11-07 00:49:39,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:49:39,963 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 247 [2019-11-07 00:49:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:39,975 INFO L225 Difference]: With dead ends: 3565 [2019-11-07 00:49:39,975 INFO L226 Difference]: Without dead ends: 1819 [2019-11-07 00:49:39,981 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 480 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:49:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2019-11-07 00:49:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1817. [2019-11-07 00:49:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2019-11-07 00:49:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2573 transitions. [2019-11-07 00:49:40,079 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2573 transitions. Word has length 247 [2019-11-07 00:49:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:40,079 INFO L462 AbstractCegarLoop]: Abstraction has 1817 states and 2573 transitions. [2019-11-07 00:49:40,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:49:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2573 transitions. [2019-11-07 00:49:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-11-07 00:49:40,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:40,088 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:40,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:40,296 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1908875604, now seen corresponding path program 2 times [2019-11-07 00:49:40,297 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:40,297 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698494980] [2019-11-07 00:49:40,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:40,993 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698494980] [2019-11-07 00:49:40,993 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674748370] [2019-11-07 00:49:40,994 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:41,593 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:49:41,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:49:41,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:41,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:41,851 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:42,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:42,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:49:42,418 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:49:42,419 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-11-07 00:49:42,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904072907] [2019-11-07 00:49:42,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:49:42,421 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:49:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:49:42,422 INFO L87 Difference]: Start difference. First operand 1817 states and 2573 transitions. Second operand 12 states. [2019-11-07 00:49:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:43,645 INFO L93 Difference]: Finished difference Result 3556 states and 5054 transitions. [2019-11-07 00:49:43,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:49:43,646 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 248 [2019-11-07 00:49:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:43,657 INFO L225 Difference]: With dead ends: 3556 [2019-11-07 00:49:43,657 INFO L226 Difference]: Without dead ends: 1819 [2019-11-07 00:49:43,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 498 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 00:49:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2019-11-07 00:49:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1817. [2019-11-07 00:49:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2019-11-07 00:49:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2572 transitions. [2019-11-07 00:49:43,746 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2572 transitions. Word has length 248 [2019-11-07 00:49:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:43,746 INFO L462 AbstractCegarLoop]: Abstraction has 1817 states and 2572 transitions. [2019-11-07 00:49:43,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:49:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2572 transitions. [2019-11-07 00:49:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-11-07 00:49:43,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:43,753 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:43,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:43,962 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash 81017526, now seen corresponding path program 3 times [2019-11-07 00:49:43,963 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:43,963 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17342003] [2019-11-07 00:49:43,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:49:44,612 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17342003] [2019-11-07 00:49:44,613 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902153831] [2019-11-07 00:49:44,613 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