java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:24,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:24,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:24,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:24,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:24,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:24,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:24,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:24,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:24,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:24,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:24,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:24,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:24,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:24,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:24,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:24,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:24,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:24,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:24,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:24,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:24,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:24,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:24,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:24,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:24,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:24,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:24,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:24,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:24,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:24,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:24,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:24,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:24,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:24,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:24,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:24,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:24,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:24,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:24,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:24,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:24,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:17:24,672 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:24,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:24,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:24,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:24,674 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:24,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:24,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:24,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:24,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:24,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:24,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:24,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:24,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:24,676 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:24,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:24,676 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:24,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:24,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:24,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:24,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:24,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:24,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:24,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:24,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:24,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:24,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:24,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:24,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:24,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:17:24,970 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:24,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:24,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:24,992 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:24,992 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:24,993 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c [2019-10-15 01:17:25,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0f8e296/1e624bbe8d2e4bfcaf4167ad49551b33/FLAG0410e5e1c [2019-10-15 01:17:25,719 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:25,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product21.cil.c [2019-10-15 01:17:25,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0f8e296/1e624bbe8d2e4bfcaf4167ad49551b33/FLAG0410e5e1c [2019-10-15 01:17:25,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0f8e296/1e624bbe8d2e4bfcaf4167ad49551b33 [2019-10-15 01:17:25,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:25,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:25,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:25,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:25,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:25,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:25" (1/1) ... [2019-10-15 01:17:25,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7789f9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:25, skipping insertion in model container [2019-10-15 01:17:25,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:25" (1/1) ... [2019-10-15 01:17:25,991 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:26,069 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:26,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:26,832 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:26,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:27,086 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:27,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27 WrapperNode [2019-10-15 01:17:27,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:27,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:27,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:27,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:27,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... [2019-10-15 01:17:27,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:27,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:27,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:27,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:27,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:17:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:17:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-15 01:17:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:17:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:27,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:27,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:29,534 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:29,535 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:29,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:29 BoogieIcfgContainer [2019-10-15 01:17:29,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:29,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:29,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:29,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:29,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:25" (1/3) ... [2019-10-15 01:17:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c37d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:29, skipping insertion in model container [2019-10-15 01:17:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:27" (2/3) ... [2019-10-15 01:17:29,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c37d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:29, skipping insertion in model container [2019-10-15 01:17:29,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:29" (3/3) ... [2019-10-15 01:17:29,546 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product21.cil.c [2019-10-15 01:17:29,556 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:29,566 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:29,577 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:29,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:29,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:29,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:29,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:29,607 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:29,607 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:29,607 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:29,607 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-10-15 01:17:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 01:17:29,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:29,658 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:29,660 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:29,666 INFO L82 PathProgramCache]: Analyzing trace with hash 857697907, now seen corresponding path program 1 times [2019-10-15 01:17:29,676 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:29,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150173598] [2019-10-15 01:17:29,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:29,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:29,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:30,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150173598] [2019-10-15 01:17:30,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:30,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:17:30,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330304629] [2019-10-15 01:17:30,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:17:30,375 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:17:30,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:30,392 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 2 states. [2019-10-15 01:17:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:30,484 INFO L93 Difference]: Finished difference Result 832 states and 1126 transitions. [2019-10-15 01:17:30,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:17:30,488 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-15 01:17:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:30,529 INFO L225 Difference]: With dead ends: 832 [2019-10-15 01:17:30,529 INFO L226 Difference]: Without dead ends: 544 [2019-10-15 01:17:30,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-15 01:17:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-10-15 01:17:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-15 01:17:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 742 transitions. [2019-10-15 01:17:30,638 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 742 transitions. Word has length 154 [2019-10-15 01:17:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:30,641 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 742 transitions. [2019-10-15 01:17:30,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:17:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 742 transitions. [2019-10-15 01:17:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:17:30,650 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:30,650 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:30,654 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:30,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2017038380, now seen corresponding path program 1 times [2019-10-15 01:17:30,655 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:30,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250718357] [2019-10-15 01:17:30,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:30,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:30,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:30,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250718357] [2019-10-15 01:17:30,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:30,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:30,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712274944] [2019-10-15 01:17:30,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:30,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:30,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:30,976 INFO L87 Difference]: Start difference. First operand 544 states and 742 transitions. Second operand 3 states. [2019-10-15 01:17:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:31,060 INFO L93 Difference]: Finished difference Result 815 states and 1092 transitions. [2019-10-15 01:17:31,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:31,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:17:31,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:31,067 INFO L225 Difference]: With dead ends: 815 [2019-10-15 01:17:31,067 INFO L226 Difference]: Without dead ends: 547 [2019-10-15 01:17:31,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-15 01:17:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-10-15 01:17:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-15 01:17:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 744 transitions. [2019-10-15 01:17:31,103 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 744 transitions. Word has length 155 [2019-10-15 01:17:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:31,103 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 744 transitions. [2019-10-15 01:17:31,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 744 transitions. [2019-10-15 01:17:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:17:31,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:31,107 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:31,108 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:31,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:31,108 INFO L82 PathProgramCache]: Analyzing trace with hash 480175040, now seen corresponding path program 1 times [2019-10-15 01:17:31,108 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:31,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400261622] [2019-10-15 01:17:31,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:31,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:31,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:31,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400261622] [2019-10-15 01:17:31,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:31,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:31,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017781558] [2019-10-15 01:17:31,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:31,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:31,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:31,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:31,253 INFO L87 Difference]: Start difference. First operand 546 states and 744 transitions. Second operand 3 states. [2019-10-15 01:17:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:31,297 INFO L93 Difference]: Finished difference Result 1070 states and 1489 transitions. [2019-10-15 01:17:31,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:31,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:17:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:31,301 INFO L225 Difference]: With dead ends: 1070 [2019-10-15 01:17:31,302 INFO L226 Difference]: Without dead ends: 589 [2019-10-15 01:17:31,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-15 01:17:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 588. [2019-10-15 01:17:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-15 01:17:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 816 transitions. [2019-10-15 01:17:31,335 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 816 transitions. Word has length 161 [2019-10-15 01:17:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:31,338 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 816 transitions. [2019-10-15 01:17:31,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 816 transitions. [2019-10-15 01:17:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:17:31,347 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:31,347 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:31,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -868910391, now seen corresponding path program 1 times [2019-10-15 01:17:31,348 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:31,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337018517] [2019-10-15 01:17:31,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:31,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:31,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:17:31,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337018517] [2019-10-15 01:17:31,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:31,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:31,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080924053] [2019-10-15 01:17:31,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:31,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:31,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:31,565 INFO L87 Difference]: Start difference. First operand 588 states and 816 transitions. Second operand 3 states. [2019-10-15 01:17:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:31,684 INFO L93 Difference]: Finished difference Result 957 states and 1317 transitions. [2019-10-15 01:17:31,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:31,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:17:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:31,694 INFO L225 Difference]: With dead ends: 957 [2019-10-15 01:17:31,694 INFO L226 Difference]: Without dead ends: 702 [2019-10-15 01:17:31,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:31,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-15 01:17:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 701. [2019-10-15 01:17:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-10-15 01:17:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 978 transitions. [2019-10-15 01:17:31,742 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 978 transitions. Word has length 162 [2019-10-15 01:17:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:31,743 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 978 transitions. [2019-10-15 01:17:31,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 978 transitions. [2019-10-15 01:17:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-15 01:17:31,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:31,754 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:31,754 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:31,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1149971746, now seen corresponding path program 1 times [2019-10-15 01:17:31,754 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:31,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176523246] [2019-10-15 01:17:31,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:31,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:31,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:32,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176523246] [2019-10-15 01:17:32,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:32,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:17:32,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096533289] [2019-10-15 01:17:32,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:17:32,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:32,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:17:32,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:17:32,055 INFO L87 Difference]: Start difference. First operand 701 states and 978 transitions. Second operand 6 states. [2019-10-15 01:17:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:32,780 INFO L93 Difference]: Finished difference Result 1710 states and 2381 transitions. [2019-10-15 01:17:32,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:17:32,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2019-10-15 01:17:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:32,789 INFO L225 Difference]: With dead ends: 1710 [2019-10-15 01:17:32,790 INFO L226 Difference]: Without dead ends: 1353 [2019-10-15 01:17:32,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:17:32,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2019-10-15 01:17:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1342. [2019-10-15 01:17:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-10-15 01:17:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1892 transitions. [2019-10-15 01:17:32,868 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1892 transitions. Word has length 286 [2019-10-15 01:17:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:32,869 INFO L462 AbstractCegarLoop]: Abstraction has 1342 states and 1892 transitions. [2019-10-15 01:17:32,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:17:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1892 transitions. [2019-10-15 01:17:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-10-15 01:17:32,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:32,877 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:32,877 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1823902781, now seen corresponding path program 1 times [2019-10-15 01:17:32,878 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:32,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089161810] [2019-10-15 01:17:32,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:32,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:32,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:33,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089161810] [2019-10-15 01:17:33,223 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:33,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:17:33,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556067748] [2019-10-15 01:17:33,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:33,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:33,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:33,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:17:33,225 INFO L87 Difference]: Start difference. First operand 1342 states and 1892 transitions. Second operand 9 states. [2019-10-15 01:17:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:33,584 INFO L93 Difference]: Finished difference Result 2053 states and 2833 transitions. [2019-10-15 01:17:33,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:33,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2019-10-15 01:17:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:33,596 INFO L225 Difference]: With dead ends: 2053 [2019-10-15 01:17:33,596 INFO L226 Difference]: Without dead ends: 1316 [2019-10-15 01:17:33,599 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:17:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2019-10-15 01:17:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1312. [2019-10-15 01:17:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-15 01:17:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1841 transitions. [2019-10-15 01:17:33,676 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1841 transitions. Word has length 287 [2019-10-15 01:17:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:33,676 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1841 transitions. [2019-10-15 01:17:33,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1841 transitions. [2019-10-15 01:17:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-15 01:17:33,690 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:33,691 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:33,691 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:33,692 INFO L82 PathProgramCache]: Analyzing trace with hash 58369020, now seen corresponding path program 1 times [2019-10-15 01:17:33,692 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:33,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753886231] [2019-10-15 01:17:33,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:33,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:33,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:17:34,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753886231] [2019-10-15 01:17:34,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254985480] [2019-10-15 01:17:34,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:34,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:35,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:17:35,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:36,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:36,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:36,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:36,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:36,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:17:36,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943379583] [2019-10-15 01:17:36,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:36,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:36,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:36,460 INFO L87 Difference]: Start difference. First operand 1312 states and 1841 transitions. Second operand 9 states. [2019-10-15 01:17:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:38,510 INFO L93 Difference]: Finished difference Result 2602 states and 3662 transitions. [2019-10-15 01:17:38,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:38,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-15 01:17:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:38,534 INFO L225 Difference]: With dead ends: 2602 [2019-10-15 01:17:38,534 INFO L226 Difference]: Without dead ends: 1326 [2019-10-15 01:17:38,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:17:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2019-10-15 01:17:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2019-10-15 01:17:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2019-10-15 01:17:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1859 transitions. [2019-10-15 01:17:38,635 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1859 transitions. Word has length 280 [2019-10-15 01:17:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:38,637 INFO L462 AbstractCegarLoop]: Abstraction has 1326 states and 1859 transitions. [2019-10-15 01:17:38,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1859 transitions. [2019-10-15 01:17:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-15 01:17:38,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:38,649 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:38,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:38,858 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:38,859 INFO L82 PathProgramCache]: Analyzing trace with hash 368278097, now seen corresponding path program 1 times [2019-10-15 01:17:38,859 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:38,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021165529] [2019-10-15 01:17:38,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:17:39,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021165529] [2019-10-15 01:17:39,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806966420] [2019-10-15 01:17:39,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:40,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:17:40,632 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:41,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:41,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:41,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:41,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:17:41,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267397160] [2019-10-15 01:17:41,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:41,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:41,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:41,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:41,280 INFO L87 Difference]: Start difference. First operand 1326 states and 1859 transitions. Second operand 7 states. [2019-10-15 01:17:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:42,800 INFO L93 Difference]: Finished difference Result 2605 states and 3671 transitions. [2019-10-15 01:17:42,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:42,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-15 01:17:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:42,809 INFO L225 Difference]: With dead ends: 2605 [2019-10-15 01:17:42,810 INFO L226 Difference]: Without dead ends: 1330 [2019-10-15 01:17:42,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:17:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2019-10-15 01:17:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2019-10-15 01:17:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2019-10-15 01:17:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1864 transitions. [2019-10-15 01:17:42,885 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1864 transitions. Word has length 281 [2019-10-15 01:17:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:42,886 INFO L462 AbstractCegarLoop]: Abstraction has 1330 states and 1864 transitions. [2019-10-15 01:17:42,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1864 transitions. [2019-10-15 01:17:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-15 01:17:42,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:42,894 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:43,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:43,102 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash 346340097, now seen corresponding path program 1 times [2019-10-15 01:17:43,103 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:43,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233533029] [2019-10-15 01:17:43,103 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:43,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:43,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:17:43,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233533029] [2019-10-15 01:17:43,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516406013] [2019-10-15 01:17:43,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:44,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:44,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:44,856 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:45,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:45,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:45,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:45,706 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:45,706 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:17:45,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970870930] [2019-10-15 01:17:45,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:45,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:45,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:45,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:17:45,709 INFO L87 Difference]: Start difference. First operand 1330 states and 1864 transitions. Second operand 16 states. [2019-10-15 01:17:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:47,890 INFO L93 Difference]: Finished difference Result 2611 states and 3670 transitions. [2019-10-15 01:17:47,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:47,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-15 01:17:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:47,904 INFO L225 Difference]: With dead ends: 2611 [2019-10-15 01:17:47,904 INFO L226 Difference]: Without dead ends: 1342 [2019-10-15 01:17:47,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:17:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-15 01:17:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-15 01:17:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-15 01:17:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1875 transitions. [2019-10-15 01:17:47,996 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1875 transitions. Word has length 282 [2019-10-15 01:17:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:47,999 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1875 transitions. [2019-10-15 01:17:47,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:17:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1875 transitions. [2019-10-15 01:17:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-15 01:17:48,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:48,047 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:48,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:48,256 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:48,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:48,258 INFO L82 PathProgramCache]: Analyzing trace with hash 967074738, now seen corresponding path program 2 times [2019-10-15 01:17:48,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:48,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252626136] [2019-10-15 01:17:48,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:48,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:48,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 01:17:48,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252626136] [2019-10-15 01:17:48,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928424368] [2019-10-15 01:17:48,720 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:49,394 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:17:49,394 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:49,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:49,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:49,614 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:50,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:50,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:17:50,278 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:50,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:17:50,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496129729] [2019-10-15 01:17:50,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:17:50,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:50,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:17:50,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:17:50,280 INFO L87 Difference]: Start difference. First operand 1340 states and 1875 transitions. Second operand 12 states. [2019-10-15 01:17:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:51,265 INFO L93 Difference]: Finished difference Result 2602 states and 3658 transitions. [2019-10-15 01:17:51,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:17:51,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-15 01:17:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:51,275 INFO L225 Difference]: With dead ends: 2602 [2019-10-15 01:17:51,275 INFO L226 Difference]: Without dead ends: 1342 [2019-10-15 01:17:51,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-15 01:17:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-15 01:17:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-15 01:17:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1874 transitions. [2019-10-15 01:17:51,333 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1874 transitions. Word has length 283 [2019-10-15 01:17:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:51,333 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1874 transitions. [2019-10-15 01:17:51,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:17:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1874 transitions. [2019-10-15 01:17:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-15 01:17:51,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:51,344 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:51,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:51,553 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:51,554 INFO L82 PathProgramCache]: Analyzing trace with hash -712437890, now seen corresponding path program 3 times [2019-10-15 01:17:51,555 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:51,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482483471] [2019-10-15 01:17:51,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:51,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:51,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:51,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482483471] [2019-10-15 01:17:51,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27680685] [2019-10-15 01:17:51,950 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:52,649 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:17:52,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:52,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:52,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:52,868 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:53,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:53,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:53,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:17:53,704 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:53,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:17:53,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917031467] [2019-10-15 01:17:53,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:17:53,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:53,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:17:53,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:53,717 INFO L87 Difference]: Start difference. First operand 1340 states and 1874 transitions. Second operand 15 states. [2019-10-15 01:17:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:55,506 INFO L93 Difference]: Finished difference Result 2609 states and 3665 transitions. [2019-10-15 01:17:55,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:55,506 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-15 01:17:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:55,515 INFO L225 Difference]: With dead ends: 2609 [2019-10-15 01:17:55,515 INFO L226 Difference]: Without dead ends: 1344 [2019-10-15 01:17:55,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:17:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2019-10-15 01:17:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2019-10-15 01:17:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-15 01:17:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1873 transitions. [2019-10-15 01:17:55,575 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1873 transitions. Word has length 284 [2019-10-15 01:17:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:55,576 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1873 transitions. [2019-10-15 01:17:55,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:17:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1873 transitions. [2019-10-15 01:17:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-15 01:17:55,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:55,585 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:55,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:55,794 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash 848484596, now seen corresponding path program 1 times [2019-10-15 01:17:55,795 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:55,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056569339] [2019-10-15 01:17:55,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:55,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:55,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:17:56,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056569339] [2019-10-15 01:17:56,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842310853] [2019-10-15 01:17:56,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:57,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:57,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:17:57,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:57,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:57,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:17:57,857 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:57,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-15 01:17:57,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129397409] [2019-10-15 01:17:57,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:17:57,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:57,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:17:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:57,860 INFO L87 Difference]: Start difference. First operand 1340 states and 1873 transitions. Second operand 11 states.