/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:15,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:15,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:15,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:15,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:15,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:15,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:15,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:15,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:15,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:15,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:15,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:15,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:15,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:15,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:15,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:15,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:15,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:15,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:15,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:15,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:15,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:15,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:15,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:15,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:15,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:15,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:15,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:15,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:15,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:15,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:15,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:15,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:15,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:15,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:15,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:15,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:15,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:15,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:15,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:15,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:15,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:52:15,637 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:15,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:15,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:15,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:15,641 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:15,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:15,642 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:15,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:15,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:15,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:15,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:15,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:15,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:15,643 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:15,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:15,643 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:15,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:15,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:15,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:15,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:15,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:15,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:15,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:15,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:15,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:15,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:15,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:15,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:15,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:52:15,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:15,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:15,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:15,959 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:15,960 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:15,960 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-11-07 00:52:16,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d95686c3/36d379101223468b908cb49e274c83bf/FLAG09163d574 [2019-11-07 00:52:16,622 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:16,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-11-07 00:52:16,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d95686c3/36d379101223468b908cb49e274c83bf/FLAG09163d574 [2019-11-07 00:52:16,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d95686c3/36d379101223468b908cb49e274c83bf [2019-11-07 00:52:16,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:16,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:16,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:16,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:16,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:16,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:16" (1/1) ... [2019-11-07 00:52:16,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727e068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:16, skipping insertion in model container [2019-11-07 00:52:16,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:16" (1/1) ... [2019-11-07 00:52:16,893 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:16,980 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:17,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:17,693 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:17,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:17,931 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:17,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17 WrapperNode [2019-11-07 00:52:17,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:17,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:17,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:17,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:17,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:17,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:17,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:17,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:18,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:18,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:18,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:18,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:18,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:18,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:18,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:18,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:52:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:52:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:52:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:52:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:52:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:52:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:18,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:18,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:18,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:18,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:52:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:20,376 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:20,376 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:20,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:20 BoogieIcfgContainer [2019-11-07 00:52:20,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:20,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:20,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:20,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:20,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:16" (1/3) ... [2019-11-07 00:52:20,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d306e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:20, skipping insertion in model container [2019-11-07 00:52:20,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17" (2/3) ... [2019-11-07 00:52:20,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d306e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:20, skipping insertion in model container [2019-11-07 00:52:20,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:20" (3/3) ... [2019-11-07 00:52:20,386 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product25.cil.c [2019-11-07 00:52:20,397 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:20,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:20,421 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:20,460 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:20,461 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:20,461 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:20,461 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:20,461 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:20,461 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:20,465 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:20,465 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:20,496 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-11-07 00:52:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 00:52:20,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:20,520 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:20,523 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:20,529 INFO L82 PathProgramCache]: Analyzing trace with hash 979301507, now seen corresponding path program 1 times [2019-11-07 00:52:20,542 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:20,542 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146960165] [2019-11-07 00:52:20,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:21,143 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146960165] [2019-11-07 00:52:21,143 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:21,144 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:21,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056997438] [2019-11-07 00:52:21,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:21,153 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:21,172 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 2 states. [2019-11-07 00:52:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:21,267 INFO L93 Difference]: Finished difference Result 860 states and 1158 transitions. [2019-11-07 00:52:21,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:21,269 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-11-07 00:52:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:21,294 INFO L225 Difference]: With dead ends: 860 [2019-11-07 00:52:21,294 INFO L226 Difference]: Without dead ends: 558 [2019-11-07 00:52:21,301 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-11-07 00:52:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2019-11-07 00:52:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-11-07 00:52:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 758 transitions. [2019-11-07 00:52:21,404 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 758 transitions. Word has length 157 [2019-11-07 00:52:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:21,409 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 758 transitions. [2019-11-07 00:52:21,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 758 transitions. [2019-11-07 00:52:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:52:21,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:21,424 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:21,425 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:21,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1208333111, now seen corresponding path program 1 times [2019-11-07 00:52:21,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:21,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277595408] [2019-11-07 00:52:21,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:21,836 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277595408] [2019-11-07 00:52:21,836 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:21,836 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:21,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103930827] [2019-11-07 00:52:21,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:21,852 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:21,853 INFO L87 Difference]: Start difference. First operand 558 states and 758 transitions. Second operand 3 states. [2019-11-07 00:52:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:21,917 INFO L93 Difference]: Finished difference Result 843 states and 1124 transitions. [2019-11-07 00:52:21,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:21,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-11-07 00:52:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:21,929 INFO L225 Difference]: With dead ends: 843 [2019-11-07 00:52:21,929 INFO L226 Difference]: Without dead ends: 561 [2019-11-07 00:52:21,932 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2019-11-07 00:52:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 560. [2019-11-07 00:52:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-11-07 00:52:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 760 transitions. [2019-11-07 00:52:21,996 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 760 transitions. Word has length 158 [2019-11-07 00:52:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:21,997 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 760 transitions. [2019-11-07 00:52:21,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 760 transitions. [2019-11-07 00:52:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:52:22,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:22,004 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:22,005 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:22,005 INFO L82 PathProgramCache]: Analyzing trace with hash -898533821, now seen corresponding path program 1 times [2019-11-07 00:52:22,005 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:22,006 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333641067] [2019-11-07 00:52:22,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:22,286 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333641067] [2019-11-07 00:52:22,286 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:22,287 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:22,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964617112] [2019-11-07 00:52:22,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:22,294 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:22,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:22,295 INFO L87 Difference]: Start difference. First operand 560 states and 760 transitions. Second operand 3 states. [2019-11-07 00:52:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:22,371 INFO L93 Difference]: Finished difference Result 1098 states and 1521 transitions. [2019-11-07 00:52:22,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:22,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-11-07 00:52:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:22,382 INFO L225 Difference]: With dead ends: 1098 [2019-11-07 00:52:22,382 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:52:22,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:52:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 602. [2019-11-07 00:52:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-07 00:52:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 832 transitions. [2019-11-07 00:52:22,441 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 832 transitions. Word has length 164 [2019-11-07 00:52:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:22,442 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 832 transitions. [2019-11-07 00:52:22,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 832 transitions. [2019-11-07 00:52:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:52:22,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:22,456 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:22,457 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2079025427, now seen corresponding path program 1 times [2019-11-07 00:52:22,458 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:22,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220162200] [2019-11-07 00:52:22,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:22,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220162200] [2019-11-07 00:52:22,868 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:22,868 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:22,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620636644] [2019-11-07 00:52:22,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:22,869 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:22,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:22,870 INFO L87 Difference]: Start difference. First operand 602 states and 832 transitions. Second operand 7 states. [2019-11-07 00:52:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:26,414 INFO L93 Difference]: Finished difference Result 1158 states and 1558 transitions. [2019-11-07 00:52:26,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:26,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2019-11-07 00:52:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:26,432 INFO L225 Difference]: With dead ends: 1158 [2019-11-07 00:52:26,432 INFO L226 Difference]: Without dead ends: 887 [2019-11-07 00:52:26,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2019-11-07 00:52:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 878. [2019-11-07 00:52:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2019-11-07 00:52:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1192 transitions. [2019-11-07 00:52:26,517 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1192 transitions. Word has length 165 [2019-11-07 00:52:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:26,518 INFO L462 AbstractCegarLoop]: Abstraction has 878 states and 1192 transitions. [2019-11-07 00:52:26,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1192 transitions. [2019-11-07 00:52:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:52:26,522 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:26,523 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:26,523 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2091303860, now seen corresponding path program 1 times [2019-11-07 00:52:26,524 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:26,524 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052548796] [2019-11-07 00:52:26,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:26,852 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052548796] [2019-11-07 00:52:26,852 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:26,853 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:52:26,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200432588] [2019-11-07 00:52:26,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:52:26,854 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:26,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:52:26,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:26,855 INFO L87 Difference]: Start difference. First operand 878 states and 1192 transitions. Second operand 18 states. [2019-11-07 00:52:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:27,429 INFO L93 Difference]: Finished difference Result 1519 states and 2047 transitions. [2019-11-07 00:52:27,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:52:27,429 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2019-11-07 00:52:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:27,437 INFO L225 Difference]: With dead ends: 1519 [2019-11-07 00:52:27,437 INFO L226 Difference]: Without dead ends: 966 [2019-11-07 00:52:27,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-11-07 00:52:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2019-11-07 00:52:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-11-07 00:52:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1313 transitions. [2019-11-07 00:52:27,499 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1313 transitions. Word has length 166 [2019-11-07 00:52:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:27,500 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1313 transitions. [2019-11-07 00:52:27,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:52:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1313 transitions. [2019-11-07 00:52:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:52:27,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:27,513 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:27,514 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash -328084636, now seen corresponding path program 1 times [2019-11-07 00:52:27,514 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:27,515 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267725035] [2019-11-07 00:52:27,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:27,735 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267725035] [2019-11-07 00:52:27,736 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:27,736 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:27,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012932873] [2019-11-07 00:52:27,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:27,737 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:27,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:27,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:27,738 INFO L87 Difference]: Start difference. First operand 964 states and 1313 transitions. Second operand 8 states. [2019-11-07 00:52:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:28,642 INFO L93 Difference]: Finished difference Result 2103 states and 2822 transitions. [2019-11-07 00:52:28,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:28,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-11-07 00:52:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:28,657 INFO L225 Difference]: With dead ends: 2103 [2019-11-07 00:52:28,657 INFO L226 Difference]: Without dead ends: 1642 [2019-11-07 00:52:28,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2019-11-07 00:52:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1623. [2019-11-07 00:52:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1623 states. [2019-11-07 00:52:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2190 transitions. [2019-11-07 00:52:28,763 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2190 transitions. Word has length 175 [2019-11-07 00:52:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:28,764 INFO L462 AbstractCegarLoop]: Abstraction has 1623 states and 2190 transitions. [2019-11-07 00:52:28,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2190 transitions. [2019-11-07 00:52:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-07 00:52:28,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:28,771 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:28,772 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 958665188, now seen corresponding path program 1 times [2019-11-07 00:52:28,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:28,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466488174] [2019-11-07 00:52:28,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:29,134 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466488174] [2019-11-07 00:52:29,134 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:29,135 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-11-07 00:52:29,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782487573] [2019-11-07 00:52:29,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 00:52:29,136 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:29,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 00:52:29,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:52:29,136 INFO L87 Difference]: Start difference. First operand 1623 states and 2190 transitions. Second operand 17 states. [2019-11-07 00:52:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:29,906 INFO L93 Difference]: Finished difference Result 2246 states and 3012 transitions. [2019-11-07 00:52:29,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:52:29,907 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 176 [2019-11-07 00:52:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:29,925 INFO L225 Difference]: With dead ends: 2246 [2019-11-07 00:52:29,925 INFO L226 Difference]: Without dead ends: 1622 [2019-11-07 00:52:29,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:52:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2019-11-07 00:52:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1621. [2019-11-07 00:52:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2019-11-07 00:52:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2185 transitions. [2019-11-07 00:52:30,031 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2185 transitions. Word has length 176 [2019-11-07 00:52:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:30,035 INFO L462 AbstractCegarLoop]: Abstraction has 1621 states and 2185 transitions. [2019-11-07 00:52:30,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 00:52:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2185 transitions. [2019-11-07 00:52:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-07 00:52:30,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:30,044 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:30,044 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1418562754, now seen corresponding path program 2 times [2019-11-07 00:52:30,048 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:30,048 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753874077] [2019-11-07 00:52:30,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:30,288 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753874077] [2019-11-07 00:52:30,288 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044756055] [2019-11-07 00:52:30,288 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:30,823 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:30,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:30,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 2120 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:30,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:31,082 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:31,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:31,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:31,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424979479] [2019-11-07 00:52:31,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:31,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:31,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:31,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:31,576 INFO L87 Difference]: Start difference. First operand 1621 states and 2185 transitions. Second operand 14 states. [2019-11-07 00:52:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:33,668 INFO L93 Difference]: Finished difference Result 4835 states and 6554 transitions. [2019-11-07 00:52:33,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:33,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 176 [2019-11-07 00:52:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:33,702 INFO L225 Difference]: With dead ends: 4835 [2019-11-07 00:52:33,702 INFO L226 Difference]: Without dead ends: 4832 [2019-11-07 00:52:33,707 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2019-11-07 00:52:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3499. [2019-11-07 00:52:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3499 states. [2019-11-07 00:52:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4801 transitions. [2019-11-07 00:52:33,969 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4801 transitions. Word has length 176 [2019-11-07 00:52:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:33,970 INFO L462 AbstractCegarLoop]: Abstraction has 3499 states and 4801 transitions. [2019-11-07 00:52:33,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4801 transitions. [2019-11-07 00:52:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-07 00:52:33,978 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:33,979 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:34,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:34,192 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1071020961, now seen corresponding path program 1 times [2019-11-07 00:52:34,193 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:34,194 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313169941] [2019-11-07 00:52:34,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:34,473 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313169941] [2019-11-07 00:52:34,473 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284241948] [2019-11-07 00:52:34,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:35,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:35,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:35,161 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:35,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:35,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:35,599 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:35,599 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:52:35,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629554068] [2019-11-07 00:52:35,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:35,600 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:35,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:35,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:35,601 INFO L87 Difference]: Start difference. First operand 3499 states and 4801 transitions. Second operand 7 states. [2019-11-07 00:52:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:36,961 INFO L93 Difference]: Finished difference Result 6971 states and 9573 transitions. [2019-11-07 00:52:36,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:52:36,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2019-11-07 00:52:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:36,984 INFO L225 Difference]: With dead ends: 6971 [2019-11-07 00:52:36,984 INFO L226 Difference]: Without dead ends: 3511 [2019-11-07 00:52:36,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2019-11-07 00:52:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3501. [2019-11-07 00:52:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2019-11-07 00:52:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4804 transitions. [2019-11-07 00:52:37,163 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4804 transitions. Word has length 179 [2019-11-07 00:52:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:37,163 INFO L462 AbstractCegarLoop]: Abstraction has 3501 states and 4804 transitions. [2019-11-07 00:52:37,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4804 transitions. [2019-11-07 00:52:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:52:37,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:37,176 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:37,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:37,386 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:37,387 INFO L82 PathProgramCache]: Analyzing trace with hash 126573105, now seen corresponding path program 1 times [2019-11-07 00:52:37,387 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:37,387 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494021211] [2019-11-07 00:52:37,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:37,541 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494021211] [2019-11-07 00:52:37,542 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495291916] [2019-11-07 00:52:37,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:38,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:38,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:52:38,451 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:38,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:38,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:38,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:39,012 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:39,013 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:52:39,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652112560] [2019-11-07 00:52:39,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:39,014 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:39,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:39,015 INFO L87 Difference]: Start difference. First operand 3501 states and 4804 transitions. Second operand 9 states. [2019-11-07 00:52:41,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,110 INFO L93 Difference]: Finished difference Result 6978 states and 9583 transitions. [2019-11-07 00:52:41,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:41,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 180 [2019-11-07 00:52:41,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,132 INFO L225 Difference]: With dead ends: 6978 [2019-11-07 00:52:41,132 INFO L226 Difference]: Without dead ends: 3519 [2019-11-07 00:52:41,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2019-11-07 00:52:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3517. [2019-11-07 00:52:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3517 states. [2019-11-07 00:52:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4820 transitions. [2019-11-07 00:52:41,314 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4820 transitions. Word has length 180 [2019-11-07 00:52:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:41,315 INFO L462 AbstractCegarLoop]: Abstraction has 3517 states and 4820 transitions. [2019-11-07 00:52:41,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4820 transitions. [2019-11-07 00:52:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:52:41,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:41,326 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:52:41,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:41,534 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:41,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:41,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1604795262, now seen corresponding path program 1 times [2019-11-07 00:52:41,535 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:41,535 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263632371] [2019-11-07 00:52:41,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:41,718 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263632371] [2019-11-07 00:52:41,718 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068587363] [2019-11-07 00:52:41,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:42,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:42,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:42,521 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:42,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:43,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:43,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:43,199 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:43,199 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:52:43,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073589364] [2019-11-07 00:52:43,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:43,200 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:43,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:43,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:52:43,201 INFO L87 Difference]: Start difference. First operand 3517 states and 4820 transitions. Second operand 16 states. [2019-11-07 00:52:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:44,875 INFO L93 Difference]: Finished difference Result 6970 states and 9564 transitions. [2019-11-07 00:52:44,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:44,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 181 [2019-11-07 00:52:44,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:44,896 INFO L225 Difference]: With dead ends: 6970 [2019-11-07 00:52:44,896 INFO L226 Difference]: Without dead ends: 3541 [2019-11-07 00:52:44,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2019-11-07 00:52:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3539. [2019-11-07 00:52:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2019-11-07 00:52:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 4845 transitions. [2019-11-07 00:52:45,068 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 4845 transitions. Word has length 181 [2019-11-07 00:52:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:45,069 INFO L462 AbstractCegarLoop]: Abstraction has 3539 states and 4845 transitions. [2019-11-07 00:52:45,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 4845 transitions. [2019-11-07 00:52:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:52:45,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:45,078 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:52:45,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:45,285 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:45,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1444117277, now seen corresponding path program 2 times [2019-11-07 00:52:45,286 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:45,286 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059731857] [2019-11-07 00:52:45,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:45,484 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059731857] [2019-11-07 00:52:45,484 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307151768] [2019-11-07 00:52:45,484 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 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 [2019-11-07 00:52:46,077 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:52:46,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:46,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:46,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:46,198 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:46,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:46,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:46,687 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:46,687 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 00:52:46,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741148809] [2019-11-07 00:52:46,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:52:46,696 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:46,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:52:46,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:46,697 INFO L87 Difference]: Start difference. First operand 3539 states and 4845 transitions. Second operand 11 states.