/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:17,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:17,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:17,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:17,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:17,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:17,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:17,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:17,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:17,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:17,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:17,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:17,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:17,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:17,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:17,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:17,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:17,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:17,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:17,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:17,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:17,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:17,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:17,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:17,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:17,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:17,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:17,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:17,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:17,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:17,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:17,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:17,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:17,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:17,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:17,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:17,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:17,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:17,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:17,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:17,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:17,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:52:17,524 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:17,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:17,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:17,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:17,527 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:17,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:17,527 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:17,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:17,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:17,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:17,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:17,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:17,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:17,529 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:17,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:17,529 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:17,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:17,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:17,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:17,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:17,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:17,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:17,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:17,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:17,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:17,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:17,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:17,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:17,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:52:17,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:17,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:17,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:17,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:17,839 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:17,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c [2019-11-07 00:52:17,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e450da31/b513a820e4434fbc8303c437b094be7e/FLAG972c9bef9 [2019-11-07 00:52:18,520 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:18,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c [2019-11-07 00:52:18,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e450da31/b513a820e4434fbc8303c437b094be7e/FLAG972c9bef9 [2019-11-07 00:52:18,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e450da31/b513a820e4434fbc8303c437b094be7e [2019-11-07 00:52:18,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:18,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:18,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:18,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:18,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:18,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e41eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18, skipping insertion in model container [2019-11-07 00:52:18,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,758 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:18,849 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:19,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:19,631 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:19,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:19,923 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:19,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19 WrapperNode [2019-11-07 00:52:19,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:19,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:19,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:19,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:19,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:19,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:19,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:19,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:20,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:20,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:20,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... [2019-11-07 00:52:20,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:20,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:20,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:20,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:20,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:52:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:52:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:52:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:52:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:52:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:52:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:20,223 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:20,224 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:52:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:20,248 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:20,249 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:20,250 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:20,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:20,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:20,253 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:52:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:20,254 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:52:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:22,583 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:22,584 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:22,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:22 BoogieIcfgContainer [2019-11-07 00:52:22,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:22,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:22,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:22,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:22,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:18" (1/3) ... [2019-11-07 00:52:22,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e221cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:22, skipping insertion in model container [2019-11-07 00:52:22,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:19" (2/3) ... [2019-11-07 00:52:22,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e221cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:22, skipping insertion in model container [2019-11-07 00:52:22,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:22" (3/3) ... [2019-11-07 00:52:22,596 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product29.cil.c [2019-11-07 00:52:22,606 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:22,617 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:22,629 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:22,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:22,669 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:22,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:22,673 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:22,673 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:22,674 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:22,674 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:22,674 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-11-07 00:52:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:22,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:22,744 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:22,746 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:22,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1933710850, now seen corresponding path program 1 times [2019-11-07 00:52:22,761 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:22,762 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240014721] [2019-11-07 00:52:22,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:23,510 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240014721] [2019-11-07 00:52:23,510 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:23,511 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:23,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153748197] [2019-11-07 00:52:23,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:23,521 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:23,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:23,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:23,539 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 2 states. [2019-11-07 00:52:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:23,639 INFO L93 Difference]: Finished difference Result 845 states and 1153 transitions. [2019-11-07 00:52:23,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:23,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 173 [2019-11-07 00:52:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:23,665 INFO L225 Difference]: With dead ends: 845 [2019-11-07 00:52:23,665 INFO L226 Difference]: Without dead ends: 545 [2019-11-07 00:52:23,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2019-11-07 00:52:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2019-11-07 00:52:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2019-11-07 00:52:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 748 transitions. [2019-11-07 00:52:23,819 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 748 transitions. Word has length 173 [2019-11-07 00:52:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:23,822 INFO L462 AbstractCegarLoop]: Abstraction has 545 states and 748 transitions. [2019-11-07 00:52:23,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 748 transitions. [2019-11-07 00:52:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:52:23,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:23,830 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:23,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1848846547, now seen corresponding path program 1 times [2019-11-07 00:52:23,831 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:23,831 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150811805] [2019-11-07 00:52:23,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:24,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150811805] [2019-11-07 00:52:24,106 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:24,107 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:24,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227755768] [2019-11-07 00:52:24,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:24,109 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:24,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:24,110 INFO L87 Difference]: Start difference. First operand 545 states and 748 transitions. Second operand 3 states. [2019-11-07 00:52:24,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:24,165 INFO L93 Difference]: Finished difference Result 828 states and 1118 transitions. [2019-11-07 00:52:24,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:24,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-11-07 00:52:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:24,171 INFO L225 Difference]: With dead ends: 828 [2019-11-07 00:52:24,171 INFO L226 Difference]: Without dead ends: 548 [2019-11-07 00:52:24,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-11-07 00:52:24,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2019-11-07 00:52:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-11-07 00:52:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 750 transitions. [2019-11-07 00:52:24,197 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 750 transitions. Word has length 174 [2019-11-07 00:52:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:24,198 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 750 transitions. [2019-11-07 00:52:24,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 750 transitions. [2019-11-07 00:52:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:52:24,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:24,202 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:24,202 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:24,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1241537791, now seen corresponding path program 1 times [2019-11-07 00:52:24,203 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:24,203 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135464134] [2019-11-07 00:52:24,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:24,428 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135464134] [2019-11-07 00:52:24,428 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:24,429 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:24,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629510733] [2019-11-07 00:52:24,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:24,430 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:24,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:24,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:24,431 INFO L87 Difference]: Start difference. First operand 547 states and 750 transitions. Second operand 3 states. [2019-11-07 00:52:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:24,479 INFO L93 Difference]: Finished difference Result 1070 states and 1498 transitions. [2019-11-07 00:52:24,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:24,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:52:24,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:24,486 INFO L225 Difference]: With dead ends: 1070 [2019-11-07 00:52:24,486 INFO L226 Difference]: Without dead ends: 588 [2019-11-07 00:52:24,488 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-11-07 00:52:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 587. [2019-11-07 00:52:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2019-11-07 00:52:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 819 transitions. [2019-11-07 00:52:24,529 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 819 transitions. Word has length 180 [2019-11-07 00:52:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:24,531 INFO L462 AbstractCegarLoop]: Abstraction has 587 states and 819 transitions. [2019-11-07 00:52:24,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 819 transitions. [2019-11-07 00:52:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:52:24,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:24,539 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:24,539 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:24,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:24,539 INFO L82 PathProgramCache]: Analyzing trace with hash -2124332308, now seen corresponding path program 1 times [2019-11-07 00:52:24,540 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:24,540 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637813156] [2019-11-07 00:52:24,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:24,837 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637813156] [2019-11-07 00:52:24,837 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:24,838 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:24,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896689496] [2019-11-07 00:52:24,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:24,841 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:24,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:24,850 INFO L87 Difference]: Start difference. First operand 587 states and 819 transitions. Second operand 7 states. [2019-11-07 00:52:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:28,403 INFO L93 Difference]: Finished difference Result 1139 states and 1552 transitions. [2019-11-07 00:52:28,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:28,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2019-11-07 00:52:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:28,413 INFO L225 Difference]: With dead ends: 1139 [2019-11-07 00:52:28,413 INFO L226 Difference]: Without dead ends: 870 [2019-11-07 00:52:28,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-11-07 00:52:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 861. [2019-11-07 00:52:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-11-07 00:52:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1182 transitions. [2019-11-07 00:52:28,473 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1182 transitions. Word has length 181 [2019-11-07 00:52:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:28,474 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1182 transitions. [2019-11-07 00:52:28,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1182 transitions. [2019-11-07 00:52:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:52:28,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:28,479 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:28,479 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash 176199948, now seen corresponding path program 1 times [2019-11-07 00:52:28,480 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:28,481 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014115902] [2019-11-07 00:52:28,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:28,926 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014115902] [2019-11-07 00:52:28,926 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:28,927 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-11-07 00:52:28,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816633170] [2019-11-07 00:52:28,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 00:52:28,928 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:28,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 00:52:28,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:28,929 INFO L87 Difference]: Start difference. First operand 861 states and 1182 transitions. Second operand 20 states. [2019-11-07 00:52:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:29,467 INFO L93 Difference]: Finished difference Result 1520 states and 2076 transitions. [2019-11-07 00:52:29,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 00:52:29,468 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 182 [2019-11-07 00:52:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:29,478 INFO L225 Difference]: With dead ends: 1520 [2019-11-07 00:52:29,478 INFO L226 Difference]: Without dead ends: 971 [2019-11-07 00:52:29,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:52:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-11-07 00:52:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2019-11-07 00:52:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2019-11-07 00:52:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1333 transitions. [2019-11-07 00:52:29,528 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1333 transitions. Word has length 182 [2019-11-07 00:52:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:29,531 INFO L462 AbstractCegarLoop]: Abstraction has 969 states and 1333 transitions. [2019-11-07 00:52:29,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 00:52:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1333 transitions. [2019-11-07 00:52:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 00:52:29,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:29,536 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:29,536 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:29,537 INFO L82 PathProgramCache]: Analyzing trace with hash -427472189, now seen corresponding path program 1 times [2019-11-07 00:52:29,537 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:29,537 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494470953] [2019-11-07 00:52:29,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:29,815 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494470953] [2019-11-07 00:52:29,816 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:29,817 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:29,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804112127] [2019-11-07 00:52:29,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:29,819 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:29,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:29,819 INFO L87 Difference]: Start difference. First operand 969 states and 1333 transitions. Second operand 8 states. [2019-11-07 00:52:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:30,850 INFO L93 Difference]: Finished difference Result 2122 states and 2888 transitions. [2019-11-07 00:52:30,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:30,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2019-11-07 00:52:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:30,861 INFO L225 Difference]: With dead ends: 2122 [2019-11-07 00:52:30,861 INFO L226 Difference]: Without dead ends: 1665 [2019-11-07 00:52:30,864 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2019-11-07 00:52:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1646. [2019-11-07 00:52:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2019-11-07 00:52:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2251 transitions. [2019-11-07 00:52:30,943 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2251 transitions. Word has length 191 [2019-11-07 00:52:30,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:30,944 INFO L462 AbstractCegarLoop]: Abstraction has 1646 states and 2251 transitions. [2019-11-07 00:52:30,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2251 transitions. [2019-11-07 00:52:30,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:52:30,949 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:30,950 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:30,950 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:30,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:30,950 INFO L82 PathProgramCache]: Analyzing trace with hash 304313995, now seen corresponding path program 1 times [2019-11-07 00:52:30,951 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:30,951 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726727813] [2019-11-07 00:52:30,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:31,305 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726727813] [2019-11-07 00:52:31,306 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:31,306 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:52:31,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088189181] [2019-11-07 00:52:31,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:52:31,307 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:31,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:52:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:52:31,308 INFO L87 Difference]: Start difference. First operand 1646 states and 2251 transitions. Second operand 19 states. [2019-11-07 00:52:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:32,394 INFO L93 Difference]: Finished difference Result 2287 states and 3115 transitions. [2019-11-07 00:52:32,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 00:52:32,395 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 192 [2019-11-07 00:52:32,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:32,405 INFO L225 Difference]: With dead ends: 2287 [2019-11-07 00:52:32,405 INFO L226 Difference]: Without dead ends: 1645 [2019-11-07 00:52:32,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:52:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2019-11-07 00:52:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1644. [2019-11-07 00:52:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2019-11-07 00:52:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2246 transitions. [2019-11-07 00:52:32,486 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2246 transitions. Word has length 192 [2019-11-07 00:52:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:32,487 INFO L462 AbstractCegarLoop]: Abstraction has 1644 states and 2246 transitions. [2019-11-07 00:52:32,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:52:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2246 transitions. [2019-11-07 00:52:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:52:32,492 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:32,493 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:32,493 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:32,494 INFO L82 PathProgramCache]: Analyzing trace with hash 383856407, now seen corresponding path program 2 times [2019-11-07 00:52:32,494 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:32,494 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829127873] [2019-11-07 00:52:32,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:32,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829127873] [2019-11-07 00:52:32,714 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044350210] [2019-11-07 00:52:32,714 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:33,246 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:33,246 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:33,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:33,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:33,535 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:34,048 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:34,049 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:34,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917312458] [2019-11-07 00:52:34,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:34,051 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:34,052 INFO L87 Difference]: Start difference. First operand 1644 states and 2246 transitions. Second operand 14 states. [2019-11-07 00:52:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:36,280 INFO L93 Difference]: Finished difference Result 4904 states and 6737 transitions. [2019-11-07 00:52:36,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:36,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2019-11-07 00:52:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:36,321 INFO L225 Difference]: With dead ends: 4904 [2019-11-07 00:52:36,321 INFO L226 Difference]: Without dead ends: 4901 [2019-11-07 00:52:36,326 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2019-11-07 00:52:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3532. [2019-11-07 00:52:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3532 states. [2019-11-07 00:52:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4906 transitions. [2019-11-07 00:52:36,577 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4906 transitions. Word has length 192 [2019-11-07 00:52:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:36,578 INFO L462 AbstractCegarLoop]: Abstraction has 3532 states and 4906 transitions. [2019-11-07 00:52:36,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4906 transitions. [2019-11-07 00:52:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:52:36,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:36,590 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:36,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:36,798 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2023623784, now seen corresponding path program 1 times [2019-11-07 00:52:36,800 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:36,800 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512532948] [2019-11-07 00:52:36,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:37,081 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512532948] [2019-11-07 00:52:37,081 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49801792] [2019-11-07 00:52:37,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:37,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:37,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:38,072 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:38,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:38,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:38,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:38,457 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:52:38,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061583825] [2019-11-07 00:52:38,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:38,458 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:38,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:38,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:38,459 INFO L87 Difference]: Start difference. First operand 3532 states and 4906 transitions. Second operand 7 states. [2019-11-07 00:52:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:40,109 INFO L93 Difference]: Finished difference Result 7037 states and 9783 transitions. [2019-11-07 00:52:40,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:52:40,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2019-11-07 00:52:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:40,132 INFO L225 Difference]: With dead ends: 7037 [2019-11-07 00:52:40,133 INFO L226 Difference]: Without dead ends: 3544 [2019-11-07 00:52:40,148 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 379 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2019-11-07 00:52:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3534. [2019-11-07 00:52:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3534 states. [2019-11-07 00:52:40,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 4909 transitions. [2019-11-07 00:52:40,433 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 4909 transitions. Word has length 195 [2019-11-07 00:52:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:40,433 INFO L462 AbstractCegarLoop]: Abstraction has 3534 states and 4909 transitions. [2019-11-07 00:52:40,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 4909 transitions. [2019-11-07 00:52:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:52:40,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:40,443 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:40,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:40,663 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:40,664 INFO L82 PathProgramCache]: Analyzing trace with hash 340956968, now seen corresponding path program 1 times [2019-11-07 00:52:40,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:40,665 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041634507] [2019-11-07 00:52:40,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:40,832 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041634507] [2019-11-07 00:52:40,832 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617476521] [2019-11-07 00:52:40,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:41,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:52:41,659 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:41,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:42,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:42,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:42,208 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:42,209 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:52:42,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404703452] [2019-11-07 00:52:42,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:42,210 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:42,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:42,211 INFO L87 Difference]: Start difference. First operand 3534 states and 4909 transitions. Second operand 9 states. [2019-11-07 00:52:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:43,754 INFO L93 Difference]: Finished difference Result 7044 states and 9793 transitions. [2019-11-07 00:52:43,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:43,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2019-11-07 00:52:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:43,776 INFO L225 Difference]: With dead ends: 7044 [2019-11-07 00:52:43,776 INFO L226 Difference]: Without dead ends: 3552 [2019-11-07 00:52:43,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 376 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:43,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2019-11-07 00:52:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3550. [2019-11-07 00:52:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3550 states. [2019-11-07 00:52:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 4925 transitions. [2019-11-07 00:52:43,990 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 4925 transitions. Word has length 196 [2019-11-07 00:52:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:43,990 INFO L462 AbstractCegarLoop]: Abstraction has 3550 states and 4925 transitions. [2019-11-07 00:52:43,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 4925 transitions. [2019-11-07 00:52:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:52:43,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:43,999 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:44,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:44,206 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:44,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:44,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1355981044, now seen corresponding path program 1 times [2019-11-07 00:52:44,207 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:44,207 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984642928] [2019-11-07 00:52:44,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:44,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984642928] [2019-11-07 00:52:44,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742784518] [2019-11-07 00:52:44,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:44,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 2794 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:44,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:45,187 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:45,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:45,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:45,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:45,758 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:45,758 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:52:45,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803557594] [2019-11-07 00:52:45,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:45,760 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:45,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:45,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:52:45,761 INFO L87 Difference]: Start difference. First operand 3550 states and 4925 transitions. Second operand 16 states. [2019-11-07 00:52:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:47,560 INFO L93 Difference]: Finished difference Result 7036 states and 9774 transitions. [2019-11-07 00:52:47,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:47,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 197 [2019-11-07 00:52:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:47,582 INFO L225 Difference]: With dead ends: 7036 [2019-11-07 00:52:47,582 INFO L226 Difference]: Without dead ends: 3574 [2019-11-07 00:52:47,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 378 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2019-11-07 00:52:47,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3572. [2019-11-07 00:52:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3572 states. [2019-11-07 00:52:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 4950 transitions. [2019-11-07 00:52:47,760 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 4950 transitions. Word has length 197 [2019-11-07 00:52:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:47,761 INFO L462 AbstractCegarLoop]: Abstraction has 3572 states and 4950 transitions. [2019-11-07 00:52:47,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 4950 transitions. [2019-11-07 00:52:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:52:47,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:47,770 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:47,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:47,978 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:47,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:47,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1911228752, now seen corresponding path program 2 times [2019-11-07 00:52:47,979 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:47,979 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060752752] [2019-11-07 00:52:47,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:48,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060752752] [2019-11-07 00:52:48,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100098050] [2019-11-07 00:52:48,107 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:48,857 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:52:48,858 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:48,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:48,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:48,970 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:49,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:49,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:49,408 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:49,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 00:52:49,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368838063] [2019-11-07 00:52:49,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:52:49,414 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:52:49,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:49,415 INFO L87 Difference]: Start difference. First operand 3572 states and 4950 transitions. Second operand 11 states.