java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:18:01,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:18:01,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:18:01,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:18:01,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:18:01,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:18:01,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:18:01,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:18:01,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:18:01,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:18:01,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:18:01,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:18:01,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:18:01,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:18:01,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:18:01,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:18:01,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:18:01,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:18:01,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:18:01,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:18:01,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:18:01,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:18:01,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:18:01,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:18:01,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:18:01,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:18:01,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:18:01,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:18:01,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:18:01,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:18:01,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:18:01,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:18:01,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:18:01,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:18:01,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:18:01,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:18:01,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:18:01,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:18:01,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:18:01,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:18:01,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:18:01,643 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 01:18:01,675 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:18:01,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:18:01,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:18:01,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:18:01,680 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:18:01,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:18:01,681 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:18:01,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:18:01,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:18:01,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:18:01,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:18:01,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:18:01,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:18:01,683 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:18:01,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:18:01,683 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:18:01,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:18:01,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:18:01,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:18:01,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:18:01,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:18:01,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:01,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:18:01,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:18:01,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:18:01,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:18:01,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:18:01,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:18:01,688 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 01:18:01,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:18:01,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:18:01,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:18:01,985 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:18:01,986 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:18:01,986 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c [2019-10-15 01:18:02,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6472bd0e6/55a12aff1a314ce7a48e00c877084b23/FLAG8f11bb6bb [2019-10-15 01:18:02,723 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:18:02,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product20.cil.c [2019-10-15 01:18:02,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6472bd0e6/55a12aff1a314ce7a48e00c877084b23/FLAG8f11bb6bb [2019-10-15 01:18:02,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6472bd0e6/55a12aff1a314ce7a48e00c877084b23 [2019-10-15 01:18:02,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:18:02,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:18:02,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:02,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:18:02,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:18:02,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:02" (1/1) ... [2019-10-15 01:18:02,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9af163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:02, skipping insertion in model container [2019-10-15 01:18:02,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:02" (1/1) ... [2019-10-15 01:18:02,932 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:18:03,016 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:18:03,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:03,806 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:18:03,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:04,093 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:18:04,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04 WrapperNode [2019-10-15 01:18:04,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:04,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:18:04,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:18:04,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:18:04,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:18:04,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:18:04,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:18:04,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:18:04,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (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 01:18:04,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:18:04,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:18:04,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:04,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:18:04,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:18:04,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:18:04,361 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:18:04,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:18:04,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:18:04,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:04,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:18:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:18:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:18:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:18:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:18:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:18:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:18:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:18:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:18:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:18:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:18:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:18:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:18:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:18:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:18:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:18:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:18:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:18:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:18:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:18:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:18:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:18:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:18:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:18:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:18:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:18:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:18:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:18:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:18:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:18:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:18:04,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:18:04,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:18:04,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:18:04,369 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:18:04,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:18:04,369 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:18:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:18:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:18:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:18:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:18:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:18:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:18:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:18:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:18:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:18:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:04,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:04,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:18:04,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:18:04,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:18:04,372 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:18:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:18:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:18:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:18:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:18:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:18:04,373 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:18:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:18:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:18:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:18:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:18:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-15 01:18:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:18:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:18:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:18:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:18:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:18:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:18:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:18:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:18:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:18:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:18:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:18:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:18:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:18:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:18:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:18:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:18:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:18:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:18:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:18:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:18:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:18:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:18:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:18:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:18:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:18:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:18:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:18:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:18:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:18:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:18:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:18:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:18:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:18:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:18:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:18:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:18:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:18:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:18:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:18:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:18:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:18:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:18:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:18:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:18:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:18:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:18:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:18:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:18:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:18:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:18:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:18:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:18:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:18:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:18:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:18:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:18:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:18:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:18:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:18:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:18:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:18:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:18:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:18:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:18:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:18:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:18:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:18:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:18:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:18:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:18:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:18:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:18:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:18:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:18:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:18:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:18:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:18:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:18:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:18:04,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:04,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:18:04,395 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:18:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:18:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:18:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:18:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:18:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:18:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:18:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:18:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:18:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:18:06,636 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:18:06,637 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:18:06,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:06 BoogieIcfgContainer [2019-10-15 01:18:06,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:18:06,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:18:06,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:18:06,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:18:06,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:18:02" (1/3) ... [2019-10-15 01:18:06,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f2cb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:06, skipping insertion in model container [2019-10-15 01:18:06,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04" (2/3) ... [2019-10-15 01:18:06,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f2cb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:06, skipping insertion in model container [2019-10-15 01:18:06,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:06" (3/3) ... [2019-10-15 01:18:06,648 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product20.cil.c [2019-10-15 01:18:06,659 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:18:06,672 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:18:06,685 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:18:06,732 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:18:06,732 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:18:06,732 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:18:06,732 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:18:06,732 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:18:06,732 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:18:06,733 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:18:06,733 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:18:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states. [2019-10-15 01:18:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 01:18:06,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:06,804 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:06,807 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1483923005, now seen corresponding path program 1 times [2019-10-15 01:18:06,824 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:06,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240313819] [2019-10-15 01:18:06,825 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:06,825 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:06,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:07,523 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 01:18:07,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240313819] [2019-10-15 01:18:07,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:07,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:18:07,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729061034] [2019-10-15 01:18:07,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:07,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:07,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:07,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:07,557 INFO L87 Difference]: Start difference. First operand 563 states. Second operand 2 states. [2019-10-15 01:18:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:07,675 INFO L93 Difference]: Finished difference Result 764 states and 1044 transitions. [2019-10-15 01:18:07,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:07,677 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-15 01:18:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:07,699 INFO L225 Difference]: With dead ends: 764 [2019-10-15 01:18:07,699 INFO L226 Difference]: Without dead ends: 510 [2019-10-15 01:18:07,707 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 01:18:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-15 01:18:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2019-10-15 01:18:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2019-10-15 01:18:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 701 transitions. [2019-10-15 01:18:07,819 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 701 transitions. Word has length 154 [2019-10-15 01:18:07,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:07,822 INFO L462 AbstractCegarLoop]: Abstraction has 510 states and 701 transitions. [2019-10-15 01:18:07,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 701 transitions. [2019-10-15 01:18:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:18:07,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:07,833 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:07,834 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:07,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:07,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1309919830, now seen corresponding path program 1 times [2019-10-15 01:18:07,835 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:07,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569143895] [2019-10-15 01:18:07,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:07,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:07,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:08,149 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 01:18:08,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569143895] [2019-10-15 01:18:08,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:08,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:08,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144189430] [2019-10-15 01:18:08,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:08,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:08,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:08,158 INFO L87 Difference]: Start difference. First operand 510 states and 701 transitions. Second operand 3 states. [2019-10-15 01:18:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:08,257 INFO L93 Difference]: Finished difference Result 747 states and 1010 transitions. [2019-10-15 01:18:08,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:08,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:18:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:08,281 INFO L225 Difference]: With dead ends: 747 [2019-10-15 01:18:08,281 INFO L226 Difference]: Without dead ends: 513 [2019-10-15 01:18:08,284 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 01:18:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-15 01:18:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-10-15 01:18:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-15 01:18:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 703 transitions. [2019-10-15 01:18:08,323 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 703 transitions. Word has length 155 [2019-10-15 01:18:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:08,324 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 703 transitions. [2019-10-15 01:18:08,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 703 transitions. [2019-10-15 01:18:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:18:08,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:08,328 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] [2019-10-15 01:18:08,328 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash 406210246, now seen corresponding path program 1 times [2019-10-15 01:18:08,329 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:08,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080839096] [2019-10-15 01:18:08,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:08,614 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 01:18:08,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080839096] [2019-10-15 01:18:08,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:08,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:08,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721916617] [2019-10-15 01:18:08,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:08,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:08,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:08,620 INFO L87 Difference]: Start difference. First operand 512 states and 703 transitions. Second operand 3 states. [2019-10-15 01:18:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:08,688 INFO L93 Difference]: Finished difference Result 1002 states and 1407 transitions. [2019-10-15 01:18:08,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:08,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-15 01:18:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:08,695 INFO L225 Difference]: With dead ends: 1002 [2019-10-15 01:18:08,696 INFO L226 Difference]: Without dead ends: 555 [2019-10-15 01:18:08,698 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 01:18:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-10-15 01:18:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 554. [2019-10-15 01:18:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2019-10-15 01:18:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 775 transitions. [2019-10-15 01:18:08,750 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 775 transitions. Word has length 165 [2019-10-15 01:18:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:08,751 INFO L462 AbstractCegarLoop]: Abstraction has 554 states and 775 transitions. [2019-10-15 01:18:08,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 775 transitions. [2019-10-15 01:18:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:18:08,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:08,758 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] [2019-10-15 01:18:08,758 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:08,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1441612235, now seen corresponding path program 1 times [2019-10-15 01:18:08,759 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:08,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657156328] [2019-10-15 01:18:08,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:08,896 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 01:18:08,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657156328] [2019-10-15 01:18:08,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:08,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:08,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113809973] [2019-10-15 01:18:08,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:08,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:08,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:08,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:08,899 INFO L87 Difference]: Start difference. First operand 554 states and 775 transitions. Second operand 3 states. [2019-10-15 01:18:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:08,938 INFO L93 Difference]: Finished difference Result 1125 states and 1618 transitions. [2019-10-15 01:18:08,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:08,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-15 01:18:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:08,944 INFO L225 Difference]: With dead ends: 1125 [2019-10-15 01:18:08,944 INFO L226 Difference]: Without dead ends: 636 [2019-10-15 01:18:08,946 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 01:18:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-15 01:18:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 635. [2019-10-15 01:18:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-10-15 01:18:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 913 transitions. [2019-10-15 01:18:08,976 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 913 transitions. Word has length 166 [2019-10-15 01:18:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:08,976 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 913 transitions. [2019-10-15 01:18:08,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 913 transitions. [2019-10-15 01:18:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:18:08,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:08,982 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] [2019-10-15 01:18:08,983 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1339391418, now seen corresponding path program 1 times [2019-10-15 01:18:08,984 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:08,984 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936451411] [2019-10-15 01:18:08,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:09,241 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 01:18:09,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936451411] [2019-10-15 01:18:09,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:09,242 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:09,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083336415] [2019-10-15 01:18:09,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:09,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:09,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:09,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:09,245 INFO L87 Difference]: Start difference. First operand 635 states and 913 transitions. Second operand 3 states. [2019-10-15 01:18:09,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:09,293 INFO L93 Difference]: Finished difference Result 1362 states and 2022 transitions. [2019-10-15 01:18:09,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:09,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-10-15 01:18:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:09,302 INFO L225 Difference]: With dead ends: 1362 [2019-10-15 01:18:09,302 INFO L226 Difference]: Without dead ends: 792 [2019-10-15 01:18:09,305 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 01:18:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2019-10-15 01:18:09,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 791. [2019-10-15 01:18:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-10-15 01:18:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1177 transitions. [2019-10-15 01:18:09,359 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1177 transitions. Word has length 167 [2019-10-15 01:18:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:09,360 INFO L462 AbstractCegarLoop]: Abstraction has 791 states and 1177 transitions. [2019-10-15 01:18:09,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1177 transitions. [2019-10-15 01:18:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:18:09,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:09,368 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] [2019-10-15 01:18:09,368 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash 771079861, now seen corresponding path program 1 times [2019-10-15 01:18:09,369 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:09,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732072764] [2019-10-15 01:18:09,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:09,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:09,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:09,544 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 01:18:09,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732072764] [2019-10-15 01:18:09,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:09,546 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:09,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13742731] [2019-10-15 01:18:09,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:09,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:09,547 INFO L87 Difference]: Start difference. First operand 791 states and 1177 transitions. Second operand 3 states. [2019-10-15 01:18:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:09,597 INFO L93 Difference]: Finished difference Result 1818 states and 2794 transitions. [2019-10-15 01:18:09,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:09,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-15 01:18:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:09,605 INFO L225 Difference]: With dead ends: 1818 [2019-10-15 01:18:09,605 INFO L226 Difference]: Without dead ends: 1092 [2019-10-15 01:18:09,608 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 01:18:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2019-10-15 01:18:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1091. [2019-10-15 01:18:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-10-15 01:18:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1681 transitions. [2019-10-15 01:18:09,661 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1681 transitions. Word has length 168 [2019-10-15 01:18:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:09,663 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1681 transitions. [2019-10-15 01:18:09,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1681 transitions. [2019-10-15 01:18:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:18:09,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:09,671 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] [2019-10-15 01:18:09,671 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -846644512, now seen corresponding path program 1 times [2019-10-15 01:18:09,672 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:09,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191743338] [2019-10-15 01:18:09,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:09,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:09,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:09,977 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 01:18:09,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191743338] [2019-10-15 01:18:09,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:09,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:09,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102790359] [2019-10-15 01:18:09,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:09,979 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:09,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:09,980 INFO L87 Difference]: Start difference. First operand 1091 states and 1681 transitions. Second operand 3 states. [2019-10-15 01:18:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:10,042 INFO L93 Difference]: Finished difference Result 1426 states and 2141 transitions. [2019-10-15 01:18:10,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:10,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:18:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:10,052 INFO L225 Difference]: With dead ends: 1426 [2019-10-15 01:18:10,052 INFO L226 Difference]: Without dead ends: 1205 [2019-10-15 01:18:10,057 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-15 01:18:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1204. [2019-10-15 01:18:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-10-15 01:18:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1843 transitions. [2019-10-15 01:18:10,149 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1843 transitions. Word has length 171 [2019-10-15 01:18:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:10,152 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1843 transitions. [2019-10-15 01:18:10,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1843 transitions. [2019-10-15 01:18:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2019-10-15 01:18:10,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:10,168 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:10,168 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash -528556357, now seen corresponding path program 1 times [2019-10-15 01:18:10,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:10,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748897237] [2019-10-15 01:18:10,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:10,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748897237] [2019-10-15 01:18:10,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:10,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:18:10,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053548668] [2019-10-15 01:18:10,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:18:10,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:18:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:18:10,531 INFO L87 Difference]: Start difference. First operand 1204 states and 1843 transitions. Second operand 6 states. [2019-10-15 01:18:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:11,266 INFO L93 Difference]: Finished difference Result 2682 states and 4084 transitions. [2019-10-15 01:18:11,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:18:11,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2019-10-15 01:18:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:11,282 INFO L225 Difference]: With dead ends: 2682 [2019-10-15 01:18:11,283 INFO L226 Difference]: Without dead ends: 2359 [2019-10-15 01:18:11,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:18:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2019-10-15 01:18:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2348. [2019-10-15 01:18:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-10-15 01:18:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3636 transitions. [2019-10-15 01:18:11,437 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3636 transitions. Word has length 295 [2019-10-15 01:18:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:11,439 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3636 transitions. [2019-10-15 01:18:11,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:18:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3636 transitions. [2019-10-15 01:18:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-10-15 01:18:11,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:11,456 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:11,456 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:11,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1922537697, now seen corresponding path program 1 times [2019-10-15 01:18:11,457 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:11,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721296245] [2019-10-15 01:18:11,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:11,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:11,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:11,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721296245] [2019-10-15 01:18:11,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:11,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:18:11,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092044236] [2019-10-15 01:18:11,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:11,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:18:11,789 INFO L87 Difference]: Start difference. First operand 2348 states and 3636 transitions. Second operand 9 states. [2019-10-15 01:18:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:12,199 INFO L93 Difference]: Finished difference Result 2991 states and 4495 transitions. [2019-10-15 01:18:12,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:12,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2019-10-15 01:18:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:12,216 INFO L225 Difference]: With dead ends: 2991 [2019-10-15 01:18:12,216 INFO L226 Difference]: Without dead ends: 2322 [2019-10-15 01:18:12,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:18:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2019-10-15 01:18:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2318. [2019-10-15 01:18:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2019-10-15 01:18:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3585 transitions. [2019-10-15 01:18:12,341 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3585 transitions. Word has length 296 [2019-10-15 01:18:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:12,342 INFO L462 AbstractCegarLoop]: Abstraction has 2318 states and 3585 transitions. [2019-10-15 01:18:12,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3585 transitions. [2019-10-15 01:18:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-10-15 01:18:12,356 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:12,357 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:12,357 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:12,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1501375971, now seen corresponding path program 1 times [2019-10-15 01:18:12,358 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:12,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460663639] [2019-10-15 01:18:12,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:12,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460663639] [2019-10-15 01:18:12,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432507481] [2019-10-15 01:18:12,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:18:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:13,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:18:13,974 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:14,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:14,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:14,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:15,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:15,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:18:15,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591884094] [2019-10-15 01:18:15,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:15,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:15,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:15,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:15,031 INFO L87 Difference]: Start difference. First operand 2318 states and 3585 transitions. Second operand 9 states. [2019-10-15 01:18:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:16,505 INFO L93 Difference]: Finished difference Result 4614 states and 7150 transitions. [2019-10-15 01:18:16,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:16,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2019-10-15 01:18:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:16,521 INFO L225 Difference]: With dead ends: 4614 [2019-10-15 01:18:16,521 INFO L226 Difference]: Without dead ends: 2332 [2019-10-15 01:18:16,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 567 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:18:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-10-15 01:18:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2332. [2019-10-15 01:18:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2019-10-15 01:18:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3603 transitions. [2019-10-15 01:18:16,652 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3603 transitions. Word has length 289 [2019-10-15 01:18:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:16,652 INFO L462 AbstractCegarLoop]: Abstraction has 2332 states and 3603 transitions. [2019-10-15 01:18:16,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3603 transitions. [2019-10-15 01:18:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-10-15 01:18:16,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:16,668 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:16,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:16,887 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:16,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1523993304, now seen corresponding path program 1 times [2019-10-15 01:18:16,888 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:16,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947277733] [2019-10-15 01:18:16,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:16,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:16,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:17,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947277733] [2019-10-15 01:18:17,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658230587] [2019-10-15 01:18:17,458 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 01:18:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:18,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:18,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:18:18,374 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:18,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:18,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:19,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:19,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:18:19,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592631698] [2019-10-15 01:18:19,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:18:19,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:18:19,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:19,077 INFO L87 Difference]: Start difference. First operand 2332 states and 3603 transitions. Second operand 7 states. [2019-10-15 01:18:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:20,224 INFO L93 Difference]: Finished difference Result 4617 states and 7171 transitions. [2019-10-15 01:18:20,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:18:20,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2019-10-15 01:18:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:20,241 INFO L225 Difference]: With dead ends: 4617 [2019-10-15 01:18:20,241 INFO L226 Difference]: Without dead ends: 2336 [2019-10-15 01:18:20,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:18:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2019-10-15 01:18:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2019-10-15 01:18:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-10-15 01:18:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3608 transitions. [2019-10-15 01:18:20,367 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3608 transitions. Word has length 290 [2019-10-15 01:18:20,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:20,368 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3608 transitions. [2019-10-15 01:18:20,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:18:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3608 transitions. [2019-10-15 01:18:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2019-10-15 01:18:20,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:20,383 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:20,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:20,595 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:20,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1588016139, now seen corresponding path program 1 times [2019-10-15 01:18:20,596 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:20,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929721751] [2019-10-15 01:18:20,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:21,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929721751] [2019-10-15 01:18:21,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591213482] [2019-10-15 01:18:21,195 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 01:18:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:21,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:21,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:22,142 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:22,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:22,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:22,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:23,130 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:23,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:18:23,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90614038] [2019-10-15 01:18:23,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:18:23,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:18:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:18:23,133 INFO L87 Difference]: Start difference. First operand 2336 states and 3608 transitions. Second operand 16 states. [2019-10-15 01:18:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:24,903 INFO L93 Difference]: Finished difference Result 4623 states and 7158 transitions. [2019-10-15 01:18:24,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:24,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 291 [2019-10-15 01:18:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:24,987 INFO L225 Difference]: With dead ends: 4623 [2019-10-15 01:18:24,987 INFO L226 Difference]: Without dead ends: 2348 [2019-10-15 01:18:24,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 571 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:18:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-15 01:18:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-15 01:18:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-15 01:18:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3619 transitions. [2019-10-15 01:18:25,114 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3619 transitions. Word has length 291 [2019-10-15 01:18:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:25,114 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3619 transitions. [2019-10-15 01:18:25,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3619 transitions. [2019-10-15 01:18:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-15 01:18:25,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:25,130 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:25,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:25,342 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:25,343 INFO L82 PathProgramCache]: Analyzing trace with hash 153111168, now seen corresponding path program 2 times [2019-10-15 01:18:25,343 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:25,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944847113] [2019-10-15 01:18:25,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:25,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:25,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 01:18:25,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944847113] [2019-10-15 01:18:25,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897548362] [2019-10-15 01:18:25,772 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 01:18:26,483 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:26,483 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:26,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:26,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:26,705 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:27,476 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-10-15 01:18:27,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:27,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:27,819 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:27,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:27,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169042132] [2019-10-15 01:18:27,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:27,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:27,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:27,822 INFO L87 Difference]: Start difference. First operand 2346 states and 3619 transitions. Second operand 12 states. [2019-10-15 01:18:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:29,701 INFO L93 Difference]: Finished difference Result 4614 states and 7146 transitions. [2019-10-15 01:18:29,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:29,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 292 [2019-10-15 01:18:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:29,717 INFO L225 Difference]: With dead ends: 4614 [2019-10-15 01:18:29,717 INFO L226 Difference]: Without dead ends: 2348 [2019-10-15 01:18:29,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-15 01:18:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2019-10-15 01:18:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-15 01:18:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3618 transitions. [2019-10-15 01:18:29,830 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3618 transitions. Word has length 292 [2019-10-15 01:18:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:29,834 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3618 transitions. [2019-10-15 01:18:29,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3618 transitions. [2019-10-15 01:18:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-10-15 01:18:29,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:29,846 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:30,056 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:30,056 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:30,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1516843795, now seen corresponding path program 3 times [2019-10-15 01:18:30,058 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:30,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416522776] [2019-10-15 01:18:30,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:30,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:30,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:30,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416522776] [2019-10-15 01:18:30,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193012084] [2019-10-15 01:18:30,520 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 01:18:31,275 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:31,275 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:31,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:31,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:31,679 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:32,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:32,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:32,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:32,599 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:32,600 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:32,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570633898] [2019-10-15 01:18:32,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:32,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:32,602 INFO L87 Difference]: Start difference. First operand 2346 states and 3618 transitions. Second operand 15 states. [2019-10-15 01:18:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:34,009 INFO L93 Difference]: Finished difference Result 4621 states and 7153 transitions. [2019-10-15 01:18:34,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:34,009 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 293 [2019-10-15 01:18:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:34,024 INFO L225 Difference]: With dead ends: 4621 [2019-10-15 01:18:34,024 INFO L226 Difference]: Without dead ends: 2350 [2019-10-15 01:18:34,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 575 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2019-10-15 01:18:34,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2346. [2019-10-15 01:18:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2346 states. [2019-10-15 01:18:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3617 transitions. [2019-10-15 01:18:34,121 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3617 transitions. Word has length 293 [2019-10-15 01:18:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:34,121 INFO L462 AbstractCegarLoop]: Abstraction has 2346 states and 3617 transitions. [2019-10-15 01:18:34,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:18:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3617 transitions. [2019-10-15 01:18:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-15 01:18:34,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:34,134 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:34,338 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:34,339 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:34,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1103060653, now seen corresponding path program 1 times [2019-10-15 01:18:34,340 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:34,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340401271] [2019-10-15 01:18:34,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:34,341 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:34,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:34,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340401271] [2019-10-15 01:18:34,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331166680] [2019-10-15 01:18:34,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:35,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 3335 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:35,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:35,699 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:36,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms