java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:24,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:24,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:24,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:24,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:24,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:24,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:24,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:24,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:24,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:24,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:24,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:24,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:24,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:24,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:24,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:24,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:24,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:24,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:24,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:24,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:24,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:24,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:24,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:24,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:24,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:24,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:24,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:24,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:24,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:24,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:24,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:24,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:24,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:24,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:24,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:24,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:24,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:24,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:24,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:24,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:24,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:18:24,785 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:24,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:24,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:24,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:24,787 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:24,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:24,787 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:24,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:24,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:24,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:24,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:24,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:24,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:24,789 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:24,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:24,789 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:24,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:24,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:24,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:24,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:24,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:24,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:24,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:24,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:24,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:24,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:24,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:24,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:24,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:18:25,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:25,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:25,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:25,111 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:25,111 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:25,112 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c [2019-10-13 21:18:25,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dccc0aa6/6736ccd06f7b47b5b82578035b3bb892/FLAG316b8f1ba [2019-10-13 21:18:25,794 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:25,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c [2019-10-13 21:18:25,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dccc0aa6/6736ccd06f7b47b5b82578035b3bb892/FLAG316b8f1ba [2019-10-13 21:18:26,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dccc0aa6/6736ccd06f7b47b5b82578035b3bb892 [2019-10-13 21:18:26,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:26,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:26,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:26,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:26,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:26,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:26" (1/1) ... [2019-10-13 21:18:26,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371dfc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:26, skipping insertion in model container [2019-10-13 21:18:26,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:26" (1/1) ... [2019-10-13 21:18:26,040 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:26,112 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:26,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:26,917 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:27,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:27,166 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:27,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27 WrapperNode [2019-10-13 21:18:27,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:27,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:27,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:27,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:27,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... [2019-10-13 21:18:27,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:27,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:27,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:27,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:27,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:27,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:27,475 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:27,476 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:18:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:27,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:27,479 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:27,479 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:27,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:27,479 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:18:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:27,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:27,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:27,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:27,505 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:27,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:27,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:29,793 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:29,794 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:29,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:29 BoogieIcfgContainer [2019-10-13 21:18:29,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:29,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:29,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:29,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:29,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:26" (1/3) ... [2019-10-13 21:18:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffeffe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:29, skipping insertion in model container [2019-10-13 21:18:29,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:27" (2/3) ... [2019-10-13 21:18:29,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffeffe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:29, skipping insertion in model container [2019-10-13 21:18:29,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:29" (3/3) ... [2019-10-13 21:18:29,805 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product21.cil.c [2019-10-13 21:18:29,813 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:29,821 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:29,833 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:29,869 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:29,869 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:29,869 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:29,869 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:29,869 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:29,869 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:29,870 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:29,870 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-10-13 21:18:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:18:29,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:29,924 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:29,926 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:29,932 INFO L82 PathProgramCache]: Analyzing trace with hash 857697907, now seen corresponding path program 1 times [2019-10-13 21:18:29,942 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:29,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29915158] [2019-10-13 21:18:29,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:29,943 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:29,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:30,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29915158] [2019-10-13 21:18:30,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:30,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:30,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086634937] [2019-10-13 21:18:30,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:30,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:30,581 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 2 states. [2019-10-13 21:18:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:30,682 INFO L93 Difference]: Finished difference Result 832 states and 1126 transitions. [2019-10-13 21:18:30,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:30,683 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:18:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:30,719 INFO L225 Difference]: With dead ends: 832 [2019-10-13 21:18:30,719 INFO L226 Difference]: Without dead ends: 544 [2019-10-13 21:18:30,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-13 21:18:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-10-13 21:18:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-13 21:18:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 742 transitions. [2019-10-13 21:18:30,841 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 742 transitions. Word has length 154 [2019-10-13 21:18:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:30,844 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 742 transitions. [2019-10-13 21:18:30,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 742 transitions. [2019-10-13 21:18:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:18:30,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:30,859 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:30,859 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:30,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:30,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2017038380, now seen corresponding path program 1 times [2019-10-13 21:18:30,860 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:30,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125896835] [2019-10-13 21:18:30,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:30,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:30,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:31,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125896835] [2019-10-13 21:18:31,176 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:31,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:31,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156913262] [2019-10-13 21:18:31,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:31,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:31,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:31,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,188 INFO L87 Difference]: Start difference. First operand 544 states and 742 transitions. Second operand 3 states. [2019-10-13 21:18:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:31,277 INFO L93 Difference]: Finished difference Result 815 states and 1092 transitions. [2019-10-13 21:18:31,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:31,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:18:31,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:31,285 INFO L225 Difference]: With dead ends: 815 [2019-10-13 21:18:31,285 INFO L226 Difference]: Without dead ends: 547 [2019-10-13 21:18:31,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-13 21:18:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-10-13 21:18:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-13 21:18:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 744 transitions. [2019-10-13 21:18:31,347 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 744 transitions. Word has length 155 [2019-10-13 21:18:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,348 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 744 transitions. [2019-10-13 21:18:31,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 744 transitions. [2019-10-13 21:18:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:18:31,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,353 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:31,354 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash 480175040, now seen corresponding path program 1 times [2019-10-13 21:18:31,354 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312702224] [2019-10-13 21:18:31,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:31,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312702224] [2019-10-13 21:18:31,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:31,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:31,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571639848] [2019-10-13 21:18:31,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:31,549 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:31,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:31,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,550 INFO L87 Difference]: Start difference. First operand 546 states and 744 transitions. Second operand 3 states. [2019-10-13 21:18:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:31,604 INFO L93 Difference]: Finished difference Result 1070 states and 1489 transitions. [2019-10-13 21:18:31,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:31,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:18:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:31,613 INFO L225 Difference]: With dead ends: 1070 [2019-10-13 21:18:31,613 INFO L226 Difference]: Without dead ends: 589 [2019-10-13 21:18:31,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-13 21:18:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 588. [2019-10-13 21:18:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-13 21:18:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 816 transitions. [2019-10-13 21:18:31,665 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 816 transitions. Word has length 161 [2019-10-13 21:18:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:31,667 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 816 transitions. [2019-10-13 21:18:31,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 816 transitions. [2019-10-13 21:18:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:18:31,676 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:31,676 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:31,677 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:31,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:31,677 INFO L82 PathProgramCache]: Analyzing trace with hash -868910391, now seen corresponding path program 1 times [2019-10-13 21:18:31,678 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:31,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082466255] [2019-10-13 21:18:31,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:31,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:32,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082466255] [2019-10-13 21:18:32,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:32,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236480445] [2019-10-13 21:18:32,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:32,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:32,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,026 INFO L87 Difference]: Start difference. First operand 588 states and 816 transitions. Second operand 3 states. [2019-10-13 21:18:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:32,067 INFO L93 Difference]: Finished difference Result 957 states and 1317 transitions. [2019-10-13 21:18:32,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:32,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:18:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:32,073 INFO L225 Difference]: With dead ends: 957 [2019-10-13 21:18:32,074 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:18:32,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:18:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 701. [2019-10-13 21:18:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-10-13 21:18:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 978 transitions. [2019-10-13 21:18:32,119 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 978 transitions. Word has length 162 [2019-10-13 21:18:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:32,120 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 978 transitions. [2019-10-13 21:18:32,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 978 transitions. [2019-10-13 21:18:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 21:18:32,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:32,130 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] [2019-10-13 21:18:32,130 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1149971746, now seen corresponding path program 1 times [2019-10-13 21:18:32,131 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:32,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100361921] [2019-10-13 21:18:32,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:32,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:32,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100361921] [2019-10-13 21:18:32,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:32,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:18:32,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728949483] [2019-10-13 21:18:32,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:18:32,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:18:32,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:18:32,414 INFO L87 Difference]: Start difference. First operand 701 states and 978 transitions. Second operand 6 states. [2019-10-13 21:18:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:33,149 INFO L93 Difference]: Finished difference Result 1710 states and 2381 transitions. [2019-10-13 21:18:33,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:18:33,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2019-10-13 21:18:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:33,159 INFO L225 Difference]: With dead ends: 1710 [2019-10-13 21:18:33,159 INFO L226 Difference]: Without dead ends: 1353 [2019-10-13 21:18:33,161 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 [2019-10-13 21:18:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2019-10-13 21:18:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1342. [2019-10-13 21:18:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-10-13 21:18:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1892 transitions. [2019-10-13 21:18:33,228 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1892 transitions. Word has length 286 [2019-10-13 21:18:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:33,230 INFO L462 AbstractCegarLoop]: Abstraction has 1342 states and 1892 transitions. [2019-10-13 21:18:33,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:18:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1892 transitions. [2019-10-13 21:18:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-10-13 21:18:33,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:33,238 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] [2019-10-13 21:18:33,239 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:33,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1823902781, now seen corresponding path program 1 times [2019-10-13 21:18:33,240 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:33,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566363662] [2019-10-13 21:18:33,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:33,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:33,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566363662] [2019-10-13 21:18:33,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:33,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:18:33,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063127995] [2019-10-13 21:18:33,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:33,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:33,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:33,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:33,590 INFO L87 Difference]: Start difference. First operand 1342 states and 1892 transitions. Second operand 9 states. [2019-10-13 21:18:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:33,959 INFO L93 Difference]: Finished difference Result 2053 states and 2833 transitions. [2019-10-13 21:18:33,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:33,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2019-10-13 21:18:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:33,967 INFO L225 Difference]: With dead ends: 2053 [2019-10-13 21:18:33,967 INFO L226 Difference]: Without dead ends: 1316 [2019-10-13 21:18:33,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:18:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2019-10-13 21:18:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1312. [2019-10-13 21:18:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-13 21:18:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1841 transitions. [2019-10-13 21:18:34,040 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1841 transitions. Word has length 287 [2019-10-13 21:18:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:34,041 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1841 transitions. [2019-10-13 21:18:34,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1841 transitions. [2019-10-13 21:18:34,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-13 21:18:34,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:34,049 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] [2019-10-13 21:18:34,050 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash 58369020, now seen corresponding path program 1 times [2019-10-13 21:18:34,050 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:34,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209735131] [2019-10-13 21:18:34,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:34,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:34,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:34,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209735131] [2019-10-13 21:18:34,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906145601] [2019-10-13 21:18:34,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:35,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:35,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:18:35,731 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:36,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:36,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:36,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:36,752 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:36,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:36,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901067667] [2019-10-13 21:18:36,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:36,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:36,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:36,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:36,756 INFO L87 Difference]: Start difference. First operand 1312 states and 1841 transitions. Second operand 9 states. [2019-10-13 21:18:38,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:38,797 INFO L93 Difference]: Finished difference Result 2602 states and 3662 transitions. [2019-10-13 21:18:38,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:38,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-13 21:18:38,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:38,806 INFO L225 Difference]: With dead ends: 2602 [2019-10-13 21:18:38,806 INFO L226 Difference]: Without dead ends: 1326 [2019-10-13 21:18:38,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2019-10-13 21:18:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2019-10-13 21:18:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2019-10-13 21:18:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1859 transitions. [2019-10-13 21:18:38,875 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1859 transitions. Word has length 280 [2019-10-13 21:18:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:38,876 INFO L462 AbstractCegarLoop]: Abstraction has 1326 states and 1859 transitions. [2019-10-13 21:18:38,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1859 transitions. [2019-10-13 21:18:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 21:18:38,884 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:38,884 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] [2019-10-13 21:18:39,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:39,100 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 368278097, now seen corresponding path program 1 times [2019-10-13 21:18:39,101 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:39,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54328288] [2019-10-13 21:18:39,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:39,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:39,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:39,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54328288] [2019-10-13 21:18:39,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320724321] [2019-10-13 21:18:39,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:40,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:40,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:18:40,521 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:41,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:41,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:41,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:41,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:41,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072348688] [2019-10-13 21:18:41,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:41,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:41,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:41,182 INFO L87 Difference]: Start difference. First operand 1326 states and 1859 transitions. Second operand 7 states. [2019-10-13 21:18:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:42,795 INFO L93 Difference]: Finished difference Result 2605 states and 3671 transitions. [2019-10-13 21:18:42,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:42,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-13 21:18:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:42,803 INFO L225 Difference]: With dead ends: 2605 [2019-10-13 21:18:42,803 INFO L226 Difference]: Without dead ends: 1330 [2019-10-13 21:18:42,807 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2019-10-13 21:18:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2019-10-13 21:18:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2019-10-13 21:18:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1864 transitions. [2019-10-13 21:18:42,860 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1864 transitions. Word has length 281 [2019-10-13 21:18:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:42,860 INFO L462 AbstractCegarLoop]: Abstraction has 1330 states and 1864 transitions. [2019-10-13 21:18:42,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:42,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1864 transitions. [2019-10-13 21:18:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-13 21:18:42,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:42,868 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] [2019-10-13 21:18:43,084 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:43,084 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:43,085 INFO L82 PathProgramCache]: Analyzing trace with hash 346340097, now seen corresponding path program 1 times [2019-10-13 21:18:43,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:43,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8693791] [2019-10-13 21:18:43,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:43,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:43,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:18:43,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8693791] [2019-10-13 21:18:43,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058835718] [2019-10-13 21:18:43,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:44,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:44,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:44,727 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:45,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:45,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:45,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:45,543 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:45,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:45,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506321901] [2019-10-13 21:18:45,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:45,545 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:45,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:45,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:45,546 INFO L87 Difference]: Start difference. First operand 1330 states and 1864 transitions. Second operand 16 states. [2019-10-13 21:18:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:47,462 INFO L93 Difference]: Finished difference Result 2611 states and 3670 transitions. [2019-10-13 21:18:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:47,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-13 21:18:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:47,471 INFO L225 Difference]: With dead ends: 2611 [2019-10-13 21:18:47,471 INFO L226 Difference]: Without dead ends: 1342 [2019-10-13 21:18:47,475 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:18:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-13 21:18:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-13 21:18:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:18:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1875 transitions. [2019-10-13 21:18:47,533 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1875 transitions. Word has length 282 [2019-10-13 21:18:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:47,534 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1875 transitions. [2019-10-13 21:18:47,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1875 transitions. [2019-10-13 21:18:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-13 21:18:47,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:47,542 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] [2019-10-13 21:18:47,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:47,750 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:47,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:47,750 INFO L82 PathProgramCache]: Analyzing trace with hash 967074738, now seen corresponding path program 2 times [2019-10-13 21:18:47,751 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:47,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137717956] [2019-10-13 21:18:47,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:47,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:47,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:18:48,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137717956] [2019-10-13 21:18:48,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588433615] [2019-10-13 21:18:48,171 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:48,932 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:48,932 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:48,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:48,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:49,205 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:49,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:49,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:49,807 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:49,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:18:49,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611080850] [2019-10-13 21:18:49,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:49,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:49,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:49,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:49,809 INFO L87 Difference]: Start difference. First operand 1340 states and 1875 transitions. Second operand 12 states. [2019-10-13 21:18:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:50,715 INFO L93 Difference]: Finished difference Result 2602 states and 3658 transitions. [2019-10-13 21:18:50,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:50,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-13 21:18:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:50,724 INFO L225 Difference]: With dead ends: 2602 [2019-10-13 21:18:50,725 INFO L226 Difference]: Without dead ends: 1342 [2019-10-13 21:18:50,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-13 21:18:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-13 21:18:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:18:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1874 transitions. [2019-10-13 21:18:50,778 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1874 transitions. Word has length 283 [2019-10-13 21:18:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:50,778 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1874 transitions. [2019-10-13 21:18:50,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1874 transitions. [2019-10-13 21:18:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-13 21:18:50,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:50,784 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] [2019-10-13 21:18:50,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:50,994 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:50,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash -712437890, now seen corresponding path program 3 times [2019-10-13 21:18:50,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:50,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663328750] [2019-10-13 21:18:50,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:50,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:51,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663328750] [2019-10-13 21:18:51,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19376131] [2019-10-13 21:18:51,407 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:52,047 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:52,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:52,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:52,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:52,367 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:52,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:52,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:53,165 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:53,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:18:53,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367978873] [2019-10-13 21:18:53,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:18:53,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:53,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:18:53,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:53,167 INFO L87 Difference]: Start difference. First operand 1340 states and 1874 transitions. Second operand 15 states. [2019-10-13 21:18:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:54,910 INFO L93 Difference]: Finished difference Result 2609 states and 3665 transitions. [2019-10-13 21:18:54,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:54,911 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-13 21:18:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:54,919 INFO L225 Difference]: With dead ends: 2609 [2019-10-13 21:18:54,919 INFO L226 Difference]: Without dead ends: 1344 [2019-10-13 21:18:54,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:18:54,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2019-10-13 21:18:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2019-10-13 21:18:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:18:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1873 transitions. [2019-10-13 21:18:54,977 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1873 transitions. Word has length 284 [2019-10-13 21:18:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:54,977 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1873 transitions. [2019-10-13 21:18:54,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:18:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1873 transitions. [2019-10-13 21:18:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-13 21:18:54,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:54,983 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] [2019-10-13 21:18:55,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:55,190 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash 848484596, now seen corresponding path program 1 times [2019-10-13 21:18:55,192 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:55,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73793735] [2019-10-13 21:18:55,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:55,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:55,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73793735] [2019-10-13 21:18:55,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017294382] [2019-10-13 21:18:55,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:56,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:56,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:18:56,530 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:56,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:18:57,111 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:57,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:18:57,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538796344] [2019-10-13 21:18:57,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:18:57,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:18:57,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:57,113 INFO L87 Difference]: Start difference. First operand 1340 states and 1873 transitions. Second operand 11 states. [2019-10-13 21:18:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:58,753 INFO L93 Difference]: Finished difference Result 2608 states and 3665 transitions. [2019-10-13 21:18:58,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:58,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2019-10-13 21:18:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:58,762 INFO L225 Difference]: With dead ends: 2608 [2019-10-13 21:18:58,763 INFO L226 Difference]: Without dead ends: 1348 [2019-10-13 21:18:58,767 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 564 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:18:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2019-10-13 21:18:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1342. [2019-10-13 21:18:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-10-13 21:18:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1876 transitions. [2019-10-13 21:18:58,812 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1876 transitions. Word has length 285 [2019-10-13 21:18:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:58,813 INFO L462 AbstractCegarLoop]: Abstraction has 1342 states and 1876 transitions. [2019-10-13 21:18:58,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:18:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1876 transitions. [2019-10-13 21:18:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 21:18:58,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:58,818 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] [2019-10-13 21:18:59,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:59,029 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1230856063, now seen corresponding path program 1 times [2019-10-13 21:18:59,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:59,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110748468] [2019-10-13 21:18:59,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:59,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:59,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:18:59,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110748468] [2019-10-13 21:18:59,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435343895] [2019-10-13 21:18:59,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:00,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:19:00,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-13 21:19:00,378 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 21:19:00,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1561958228] [2019-10-13 21:19:00,756 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 287