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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:47,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:47,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:47,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:47,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:47,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:47,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:47,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:47,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:47,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:47,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:47,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:47,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:47,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:47,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:47,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:47,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:47,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:47,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:47,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:47,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:47,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:47,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:47,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:47,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:47,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:47,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:47,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:47,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:47,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:47,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:47,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:47,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:47,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:47,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:47,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:47,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:47,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:47,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:47,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:47,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:47,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:13:47,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:47,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:47,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:47,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:47,172 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:47,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:47,173 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:47,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:47,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:47,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:47,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:47,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:47,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:47,175 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:47,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:47,175 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:47,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:47,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:47,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:47,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:47,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:47,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:47,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:47,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:47,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:47,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:47,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:47,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:47,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:13:47,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:47,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:47,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:47,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:47,452 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:47,452 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2019-10-15 01:13:47,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615627070/3aceff5d8f3945c88e1005a7ba7d7fbb/FLAG20a6c7d49 [2019-10-15 01:13:48,035 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:48,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product23.cil.c [2019-10-15 01:13:48,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615627070/3aceff5d8f3945c88e1005a7ba7d7fbb/FLAG20a6c7d49 [2019-10-15 01:13:48,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615627070/3aceff5d8f3945c88e1005a7ba7d7fbb [2019-10-15 01:13:48,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:48,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:48,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:48,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:48,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:48,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:48" (1/1) ... [2019-10-15 01:13:48,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5831e857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:48, skipping insertion in model container [2019-10-15 01:13:48,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:48" (1/1) ... [2019-10-15 01:13:48,363 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:48,439 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:49,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:49,202 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:49,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:49,463 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:49,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49 WrapperNode [2019-10-15 01:13:49,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:49,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:49,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:49,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:49,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... [2019-10-15 01:13:49,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:49,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:49,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:49,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:49,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:49,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:49,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:49,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:49,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:49,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:49,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:49,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:49,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:49,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:49,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:49,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:49,735 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:49,735 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:13:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:13:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:49,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:13:49,745 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:13:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:13:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:13:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:49,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:49,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:49,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:13:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:51,772 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:51,773 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:51,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:51 BoogieIcfgContainer [2019-10-15 01:13:51,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:51,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:51,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:51,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:51,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:48" (1/3) ... [2019-10-15 01:13:51,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770c2a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:51, skipping insertion in model container [2019-10-15 01:13:51,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:49" (2/3) ... [2019-10-15 01:13:51,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770c2a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:51, skipping insertion in model container [2019-10-15 01:13:51,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:51" (3/3) ... [2019-10-15 01:13:51,785 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.c [2019-10-15 01:13:51,794 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:51,805 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:51,816 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:51,857 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:51,858 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:51,858 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:51,858 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:51,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:51,862 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:51,862 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:51,863 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2019-10-15 01:13:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:13:51,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:51,934 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:51,937 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1102474150, now seen corresponding path program 1 times [2019-10-15 01:13:51,953 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:51,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578396997] [2019-10-15 01:13:51,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:51,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:52,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578396997] [2019-10-15 01:13:52,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:52,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:52,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447877363] [2019-10-15 01:13:52,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:52,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:52,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:52,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:52,670 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 2 states. [2019-10-15 01:13:52,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:52,740 INFO L93 Difference]: Finished difference Result 806 states and 1096 transitions. [2019-10-15 01:13:52,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:52,741 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 188 [2019-10-15 01:13:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:52,775 INFO L225 Difference]: With dead ends: 806 [2019-10-15 01:13:52,775 INFO L226 Difference]: Without dead ends: 531 [2019-10-15 01:13:52,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2019-10-15 01:13:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2019-10-15 01:13:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-15 01:13:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 725 transitions. [2019-10-15 01:13:52,916 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 725 transitions. Word has length 188 [2019-10-15 01:13:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:52,918 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 725 transitions. [2019-10-15 01:13:52,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 725 transitions. [2019-10-15 01:13:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:13:52,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:52,926 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:52,926 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:52,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash 581217033, now seen corresponding path program 1 times [2019-10-15 01:13:52,927 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:52,927 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701059919] [2019-10-15 01:13:52,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:52,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:52,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:53,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701059919] [2019-10-15 01:13:53,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:53,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:53,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194806412] [2019-10-15 01:13:53,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:53,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:53,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:53,144 INFO L87 Difference]: Start difference. First operand 531 states and 725 transitions. Second operand 3 states. [2019-10-15 01:13:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:53,248 INFO L93 Difference]: Finished difference Result 789 states and 1058 transitions. [2019-10-15 01:13:53,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:53,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-15 01:13:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:53,254 INFO L225 Difference]: With dead ends: 789 [2019-10-15 01:13:53,254 INFO L226 Difference]: Without dead ends: 534 [2019-10-15 01:13:53,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-15 01:13:53,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-10-15 01:13:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-10-15 01:13:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 727 transitions. [2019-10-15 01:13:53,279 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 727 transitions. Word has length 189 [2019-10-15 01:13:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:53,280 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 727 transitions. [2019-10-15 01:13:53,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 727 transitions. [2019-10-15 01:13:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-15 01:13:53,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:53,285 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:53,285 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -762170887, now seen corresponding path program 1 times [2019-10-15 01:13:53,286 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:53,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312532978] [2019-10-15 01:13:53,286 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:53,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:53,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:53,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312532978] [2019-10-15 01:13:53,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:53,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:53,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840042946] [2019-10-15 01:13:53,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:53,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:53,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:53,481 INFO L87 Difference]: Start difference. First operand 533 states and 727 transitions. Second operand 3 states. [2019-10-15 01:13:53,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:53,547 INFO L93 Difference]: Finished difference Result 1044 states and 1455 transitions. [2019-10-15 01:13:53,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:53,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-10-15 01:13:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:53,560 INFO L225 Difference]: With dead ends: 1044 [2019-10-15 01:13:53,560 INFO L226 Difference]: Without dead ends: 576 [2019-10-15 01:13:53,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-10-15 01:13:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 575. [2019-10-15 01:13:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2019-10-15 01:13:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 799 transitions. [2019-10-15 01:13:53,614 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 799 transitions. Word has length 199 [2019-10-15 01:13:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:53,616 INFO L462 AbstractCegarLoop]: Abstraction has 575 states and 799 transitions. [2019-10-15 01:13:53,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 799 transitions. [2019-10-15 01:13:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 01:13:53,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:53,630 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:53,630 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:53,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2111399604, now seen corresponding path program 1 times [2019-10-15 01:13:53,633 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:53,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265848405] [2019-10-15 01:13:53,633 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:53,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:53,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:54,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265848405] [2019-10-15 01:13:54,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:54,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:54,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634290632] [2019-10-15 01:13:54,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:54,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:54,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:54,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:54,022 INFO L87 Difference]: Start difference. First operand 575 states and 799 transitions. Second operand 3 states. [2019-10-15 01:13:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:54,084 INFO L93 Difference]: Finished difference Result 1167 states and 1666 transitions. [2019-10-15 01:13:54,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:54,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2019-10-15 01:13:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:54,092 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:13:54,092 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:13:54,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:54,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:13:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 656. [2019-10-15 01:13:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-15 01:13:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 937 transitions. [2019-10-15 01:13:54,137 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 937 transitions. Word has length 200 [2019-10-15 01:13:54,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:54,138 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 937 transitions. [2019-10-15 01:13:54,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 937 transitions. [2019-10-15 01:13:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-15 01:13:54,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:54,149 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:54,149 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1097400825, now seen corresponding path program 1 times [2019-10-15 01:13:54,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:54,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072868499] [2019-10-15 01:13:54,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:54,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072868499] [2019-10-15 01:13:54,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:54,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:54,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329805005] [2019-10-15 01:13:54,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:54,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:54,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:54,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:54,343 INFO L87 Difference]: Start difference. First operand 656 states and 937 transitions. Second operand 3 states. [2019-10-15 01:13:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:54,383 INFO L93 Difference]: Finished difference Result 1404 states and 2070 transitions. [2019-10-15 01:13:54,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:54,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-15 01:13:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:54,390 INFO L225 Difference]: With dead ends: 1404 [2019-10-15 01:13:54,390 INFO L226 Difference]: Without dead ends: 813 [2019-10-15 01:13:54,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2019-10-15 01:13:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 812. [2019-10-15 01:13:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2019-10-15 01:13:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1201 transitions. [2019-10-15 01:13:54,428 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1201 transitions. Word has length 201 [2019-10-15 01:13:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:54,429 INFO L462 AbstractCegarLoop]: Abstraction has 812 states and 1201 transitions. [2019-10-15 01:13:54,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1201 transitions. [2019-10-15 01:13:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-15 01:13:54,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:54,435 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:54,435 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1333357236, now seen corresponding path program 1 times [2019-10-15 01:13:54,435 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:54,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992169440] [2019-10-15 01:13:54,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:54,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992169440] [2019-10-15 01:13:54,686 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:54,686 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:54,686 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919767018] [2019-10-15 01:13:54,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:54,687 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:54,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:54,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:54,688 INFO L87 Difference]: Start difference. First operand 812 states and 1201 transitions. Second operand 3 states. [2019-10-15 01:13:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:54,738 INFO L93 Difference]: Finished difference Result 1860 states and 2842 transitions. [2019-10-15 01:13:54,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:54,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-15 01:13:54,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:54,747 INFO L225 Difference]: With dead ends: 1860 [2019-10-15 01:13:54,747 INFO L226 Difference]: Without dead ends: 1113 [2019-10-15 01:13:54,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:54,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2019-10-15 01:13:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1112. [2019-10-15 01:13:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-15 01:13:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1705 transitions. [2019-10-15 01:13:54,800 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1705 transitions. Word has length 202 [2019-10-15 01:13:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:54,801 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1705 transitions. [2019-10-15 01:13:54,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1705 transitions. [2019-10-15 01:13:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:13:54,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:54,809 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:54,809 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1889313127, now seen corresponding path program 1 times [2019-10-15 01:13:54,810 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:54,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147166768] [2019-10-15 01:13:54,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:54,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:55,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147166768] [2019-10-15 01:13:55,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:55,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:55,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737171682] [2019-10-15 01:13:55,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:55,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:55,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:55,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:55,029 INFO L87 Difference]: Start difference. First operand 1112 states and 1705 transitions. Second operand 8 states. [2019-10-15 01:13:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:55,128 INFO L93 Difference]: Finished difference Result 1354 states and 2026 transitions. [2019-10-15 01:13:55,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:55,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2019-10-15 01:13:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:55,140 INFO L225 Difference]: With dead ends: 1354 [2019-10-15 01:13:55,141 INFO L226 Difference]: Without dead ends: 1112 [2019-10-15 01:13:55,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-10-15 01:13:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-10-15 01:13:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-15 01:13:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1704 transitions. [2019-10-15 01:13:55,216 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1704 transitions. Word has length 205 [2019-10-15 01:13:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:55,218 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1704 transitions. [2019-10-15 01:13:55,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1704 transitions. [2019-10-15 01:13:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-15 01:13:55,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:55,226 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:55,227 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1379903379, now seen corresponding path program 1 times [2019-10-15 01:13:55,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:55,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624825570] [2019-10-15 01:13:55,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:55,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624825570] [2019-10-15 01:13:55,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:55,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:13:55,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605969365] [2019-10-15 01:13:55,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:55,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:55,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:55,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:55,569 INFO L87 Difference]: Start difference. First operand 1112 states and 1704 transitions. Second operand 7 states. [2019-10-15 01:13:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:58,269 INFO L93 Difference]: Finished difference Result 1625 states and 2384 transitions. [2019-10-15 01:13:58,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:13:58,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2019-10-15 01:13:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:58,279 INFO L225 Difference]: With dead ends: 1625 [2019-10-15 01:13:58,279 INFO L226 Difference]: Without dead ends: 1379 [2019-10-15 01:13:58,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:13:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-10-15 01:13:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1370. [2019-10-15 01:13:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2019-10-15 01:13:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2044 transitions. [2019-10-15 01:13:58,349 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2044 transitions. Word has length 212 [2019-10-15 01:13:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:58,350 INFO L462 AbstractCegarLoop]: Abstraction has 1370 states and 2044 transitions. [2019-10-15 01:13:58,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:13:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2044 transitions. [2019-10-15 01:13:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-15 01:13:58,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:58,359 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:58,359 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1428432739, now seen corresponding path program 1 times [2019-10-15 01:13:58,360 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:58,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455752806] [2019-10-15 01:13:58,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:58,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:58,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:58,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455752806] [2019-10-15 01:13:58,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:58,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-15 01:13:58,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570731408] [2019-10-15 01:13:58,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-15 01:13:58,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:58,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-15 01:13:58,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-15 01:13:58,929 INFO L87 Difference]: Start difference. First operand 1370 states and 2044 transitions. Second operand 26 states. [2019-10-15 01:13:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:59,667 INFO L93 Difference]: Finished difference Result 2001 states and 2897 transitions. [2019-10-15 01:13:59,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:13:59,667 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 213 [2019-10-15 01:13:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:59,676 INFO L225 Difference]: With dead ends: 2001 [2019-10-15 01:13:59,677 INFO L226 Difference]: Without dead ends: 1493 [2019-10-15 01:13:59,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:13:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2019-10-15 01:13:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1488. [2019-10-15 01:13:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2019-10-15 01:13:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2195 transitions. [2019-10-15 01:13:59,742 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2195 transitions. Word has length 213 [2019-10-15 01:13:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:59,743 INFO L462 AbstractCegarLoop]: Abstraction has 1488 states and 2195 transitions. [2019-10-15 01:13:59,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-15 01:13:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2195 transitions. [2019-10-15 01:13:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-15 01:13:59,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:59,751 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:59,751 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1536275324, now seen corresponding path program 1 times [2019-10-15 01:13:59,751 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:59,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665614446] [2019-10-15 01:13:59,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:59,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:00,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665614446] [2019-10-15 01:14:00,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:00,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:14:00,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648349571] [2019-10-15 01:14:00,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:14:00,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:00,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:14:00,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:14:00,029 INFO L87 Difference]: Start difference. First operand 1488 states and 2195 transitions. Second operand 8 states. [2019-10-15 01:14:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:04,663 INFO L93 Difference]: Finished difference Result 3380 states and 4772 transitions. [2019-10-15 01:14:04,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:14:04,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2019-10-15 01:14:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:04,681 INFO L225 Difference]: With dead ends: 3380 [2019-10-15 01:14:04,681 INFO L226 Difference]: Without dead ends: 2778 [2019-10-15 01:14:04,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:14:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2019-10-15 01:14:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2766. [2019-10-15 01:14:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2019-10-15 01:14:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3927 transitions. [2019-10-15 01:14:04,833 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3927 transitions. Word has length 244 [2019-10-15 01:14:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:04,833 INFO L462 AbstractCegarLoop]: Abstraction has 2766 states and 3927 transitions. [2019-10-15 01:14:04,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:14:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3927 transitions. [2019-10-15 01:14:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:14:04,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:04,843 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:04,843 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1613499385, now seen corresponding path program 1 times [2019-10-15 01:14:04,844 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:04,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653615371] [2019-10-15 01:14:04,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:04,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:05,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653615371] [2019-10-15 01:14:05,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:05,207 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-15 01:14:05,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764458020] [2019-10-15 01:14:05,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 01:14:05,208 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 01:14:05,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:05,209 INFO L87 Difference]: Start difference. First operand 2766 states and 3927 transitions. Second operand 20 states. [2019-10-15 01:14:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:05,685 INFO L93 Difference]: Finished difference Result 4306 states and 5976 transitions. [2019-10-15 01:14:05,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 01:14:05,685 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 245 [2019-10-15 01:14:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:05,700 INFO L225 Difference]: With dead ends: 4306 [2019-10-15 01:14:05,700 INFO L226 Difference]: Without dead ends: 2470 [2019-10-15 01:14:05,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2019-10-15 01:14:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2460. [2019-10-15 01:14:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2460 states. [2019-10-15 01:14:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3505 transitions. [2019-10-15 01:14:05,831 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3505 transitions. Word has length 245 [2019-10-15 01:14:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:05,832 INFO L462 AbstractCegarLoop]: Abstraction has 2460 states and 3505 transitions. [2019-10-15 01:14:05,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 01:14:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3505 transitions. [2019-10-15 01:14:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-15 01:14:05,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:05,846 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:05,847 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:05,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:05,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1147475467, now seen corresponding path program 1 times [2019-10-15 01:14:05,848 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:05,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829326772] [2019-10-15 01:14:05,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:05,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:05,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:06,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829326772] [2019-10-15 01:14:06,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133443275] [2019-10-15 01:14:06,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:06,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:07,083 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:07,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:07,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:07,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:07,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:07,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:14:07,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26221016] [2019-10-15 01:14:07,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:07,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:07,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:07,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:07,804 INFO L87 Difference]: Start difference. First operand 2460 states and 3505 transitions. Second operand 9 states. [2019-10-15 01:14:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:09,338 INFO L93 Difference]: Finished difference Result 4898 states and 6990 transitions. [2019-10-15 01:14:09,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:09,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2019-10-15 01:14:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:09,357 INFO L225 Difference]: With dead ends: 4898 [2019-10-15 01:14:09,358 INFO L226 Difference]: Without dead ends: 2474 [2019-10-15 01:14:09,368 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 494 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2019-10-15 01:14:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2474. [2019-10-15 01:14:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2019-10-15 01:14:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3523 transitions. [2019-10-15 01:14:09,524 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3523 transitions. Word has length 254 [2019-10-15 01:14:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:09,525 INFO L462 AbstractCegarLoop]: Abstraction has 2474 states and 3523 transitions. [2019-10-15 01:14:09,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3523 transitions. [2019-10-15 01:14:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-15 01:14:09,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:09,536 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:09,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:09,745 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 990010452, now seen corresponding path program 1 times [2019-10-15 01:14:09,746 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548081985] [2019-10-15 01:14:09,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:09,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548081985] [2019-10-15 01:14:09,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032616707] [2019-10-15 01:14:09,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:10,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:10,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:10,652 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:11,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:11,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:11,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:11,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:11,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744275173] [2019-10-15 01:14:11,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:11,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:11,113 INFO L87 Difference]: Start difference. First operand 2474 states and 3523 transitions. Second operand 7 states. [2019-10-15 01:14:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:12,148 INFO L93 Difference]: Finished difference Result 4899 states and 7000 transitions. [2019-10-15 01:14:12,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:12,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2019-10-15 01:14:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:12,165 INFO L225 Difference]: With dead ends: 4899 [2019-10-15 01:14:12,165 INFO L226 Difference]: Without dead ends: 2476 [2019-10-15 01:14:12,176 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 501 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2019-10-15 01:14:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2019-10-15 01:14:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2476 states. [2019-10-15 01:14:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3526 transitions. [2019-10-15 01:14:12,290 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3526 transitions. Word has length 255 [2019-10-15 01:14:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:12,290 INFO L462 AbstractCegarLoop]: Abstraction has 2476 states and 3526 transitions. [2019-10-15 01:14:12,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3526 transitions. [2019-10-15 01:14:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-15 01:14:12,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:12,301 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:12,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:12,508 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:12,509 INFO L82 PathProgramCache]: Analyzing trace with hash 941903647, now seen corresponding path program 1 times [2019-10-15 01:14:12,509 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:12,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327728093] [2019-10-15 01:14:12,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:12,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:12,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:12,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327728093] [2019-10-15 01:14:12,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551989671] [2019-10-15 01:14:12,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:13,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:13,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:13,594 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:13,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:14,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:14,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:14,171 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:14,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:14,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262442599] [2019-10-15 01:14:14,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:14,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:14,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:14,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:14,173 INFO L87 Difference]: Start difference. First operand 2476 states and 3526 transitions. Second operand 16 states. [2019-10-15 01:14:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:16,377 INFO L93 Difference]: Finished difference Result 4903 states and 6994 transitions. [2019-10-15 01:14:16,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:16,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 256 [2019-10-15 01:14:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:16,393 INFO L225 Difference]: With dead ends: 4903 [2019-10-15 01:14:16,393 INFO L226 Difference]: Without dead ends: 2488 [2019-10-15 01:14:16,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 498 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2019-10-15 01:14:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2486. [2019-10-15 01:14:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2019-10-15 01:14:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3537 transitions. [2019-10-15 01:14:16,497 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3537 transitions. Word has length 256 [2019-10-15 01:14:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:16,497 INFO L462 AbstractCegarLoop]: Abstraction has 2486 states and 3537 transitions. [2019-10-15 01:14:16,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3537 transitions. [2019-10-15 01:14:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-15 01:14:16,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:16,506 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:16,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:16,722 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 115213538, now seen corresponding path program 2 times [2019-10-15 01:14:16,723 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:16,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707475949] [2019-10-15 01:14:16,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:16,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:16,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:17,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707475949] [2019-10-15 01:14:17,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711313704] [2019-10-15 01:14:17,246 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:17,857 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:14:17,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:17,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:17,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:18,100 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:18,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:18,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:18,653 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:18,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-15 01:14:18,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056130145] [2019-10-15 01:14:18,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:18,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:18,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:18,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:14:18,656 INFO L87 Difference]: Start difference. First operand 2486 states and 3537 transitions. Second operand 12 states. [2019-10-15 01:14:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:19,938 INFO L93 Difference]: Finished difference Result 4894 states and 6982 transitions. [2019-10-15 01:14:19,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:19,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 257 [2019-10-15 01:14:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:19,955 INFO L225 Difference]: With dead ends: 4894 [2019-10-15 01:14:19,955 INFO L226 Difference]: Without dead ends: 2488 [2019-10-15 01:14:19,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 516 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2019-10-15 01:14:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2486. [2019-10-15 01:14:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2019-10-15 01:14:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3536 transitions. [2019-10-15 01:14:20,077 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3536 transitions. Word has length 257 [2019-10-15 01:14:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:20,078 INFO L462 AbstractCegarLoop]: Abstraction has 2486 states and 3536 transitions. [2019-10-15 01:14:20,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3536 transitions. [2019-10-15 01:14:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-15 01:14:20,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:20,086 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:20,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:20,300 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 698706333, now seen corresponding path program 3 times [2019-10-15 01:14:20,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:20,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259516364] [2019-10-15 01:14:20,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:20,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:20,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259516364] [2019-10-15 01:14:20,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687347216] [2019-10-15 01:14:20,832 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:21,380 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:14:21,380 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:21,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:21,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:21,806 INFO L321 TraceCheckSpWp]: Computing backward predicates...