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_spec27_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:15,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:15,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:15,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:15,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:15,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:15,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:15,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:15,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:15,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:15,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:15,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:15,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:15,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:15,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:15,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:15,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:15,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:15,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:15,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:15,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:15,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:15,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:15,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:15,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:15,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:15,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:15,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:15,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:15,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:15,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:15,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:15,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:15,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:15,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:15,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:15,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:15,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:15,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:15,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:15,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:15,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:15,448 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:15,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:15,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:15,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:15,451 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:15,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:15,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:15,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:15,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:15,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:15,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:15,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:15,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:15,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:15,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:15,455 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:15,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:15,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:15,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:15,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:15,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:15,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:15,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:15,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:15,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:15,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:15,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:15,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:15,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:15,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:15,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:15,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:15,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:15,749 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:15,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product32.cil.c [2019-10-13 21:15:15,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a297ea8/a9886f18015945cea794068911a9c54d/FLAG91fa729c1 [2019-10-13 21:15:16,491 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:16,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product32.cil.c [2019-10-13 21:15:16,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a297ea8/a9886f18015945cea794068911a9c54d/FLAG91fa729c1 [2019-10-13 21:15:16,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a297ea8/a9886f18015945cea794068911a9c54d [2019-10-13 21:15:16,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:16,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:16,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:16,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:16,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:16,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:16" (1/1) ... [2019-10-13 21:15:16,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3457a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:16, skipping insertion in model container [2019-10-13 21:15:16,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:16" (1/1) ... [2019-10-13 21:15:16,723 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:16,802 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:17,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:17,658 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:17,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:17,890 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17 WrapperNode [2019-10-13 21:15:17,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:17,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:17,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:17,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:17,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:18,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:18,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:18,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:18,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:18,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:18,185 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:18,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:18,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:18,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:18,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:18,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:18,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:18,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:18,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:18,198 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:18,201 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:18,214 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:18,214 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:18,214 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:18,214 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:20,569 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:20,569 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:20,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:20 BoogieIcfgContainer [2019-10-13 21:15:20,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:20,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:20,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:20,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:20,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:16" (1/3) ... [2019-10-13 21:15:20,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b54b27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:20, skipping insertion in model container [2019-10-13 21:15:20,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (2/3) ... [2019-10-13 21:15:20,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b54b27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:20, skipping insertion in model container [2019-10-13 21:15:20,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:20" (3/3) ... [2019-10-13 21:15:20,579 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product32.cil.c [2019-10-13 21:15:20,589 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:20,599 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:20,611 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:20,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:20,643 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:20,644 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:20,644 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:20,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:20,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:20,644 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:20,644 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states. [2019-10-13 21:15:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-13 21:15:20,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:20,709 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:20,714 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash -175128502, now seen corresponding path program 1 times [2019-10-13 21:15:20,731 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:20,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521999403] [2019-10-13 21:15:20,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:21,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521999403] [2019-10-13 21:15:21,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:21,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:21,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50656064] [2019-10-13 21:15:21,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:21,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:21,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:21,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:21,511 INFO L87 Difference]: Start difference. First operand 639 states. Second operand 2 states. [2019-10-13 21:15:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:21,596 INFO L93 Difference]: Finished difference Result 918 states and 1250 transitions. [2019-10-13 21:15:21,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:21,598 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 220 [2019-10-13 21:15:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:21,634 INFO L225 Difference]: With dead ends: 918 [2019-10-13 21:15:21,635 INFO L226 Difference]: Without dead ends: 587 [2019-10-13 21:15:21,646 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2019-10-13 21:15:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2019-10-13 21:15:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2019-10-13 21:15:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 801 transitions. [2019-10-13 21:15:21,792 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 801 transitions. Word has length 220 [2019-10-13 21:15:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:21,797 INFO L462 AbstractCegarLoop]: Abstraction has 587 states and 801 transitions. [2019-10-13 21:15:21,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 801 transitions. [2019-10-13 21:15:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:15:21,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:21,808 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:21,808 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:21,809 INFO L82 PathProgramCache]: Analyzing trace with hash 217234565, now seen corresponding path program 1 times [2019-10-13 21:15:21,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:21,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102231142] [2019-10-13 21:15:21,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:21,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:21,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102231142] [2019-10-13 21:15:22,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731596647] [2019-10-13 21:15:22,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,147 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,148 INFO L87 Difference]: Start difference. First operand 587 states and 801 transitions. Second operand 3 states. [2019-10-13 21:15:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,222 INFO L93 Difference]: Finished difference Result 901 states and 1210 transitions. [2019-10-13 21:15:22,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-10-13 21:15:22,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,231 INFO L225 Difference]: With dead ends: 901 [2019-10-13 21:15:22,232 INFO L226 Difference]: Without dead ends: 590 [2019-10-13 21:15:22,234 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-13 21:15:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 589. [2019-10-13 21:15:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-10-13 21:15:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 803 transitions. [2019-10-13 21:15:22,276 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 803 transitions. Word has length 221 [2019-10-13 21:15:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,277 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 803 transitions. [2019-10-13 21:15:22,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 803 transitions. [2019-10-13 21:15:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:15:22,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,286 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,286 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1493318645, now seen corresponding path program 1 times [2019-10-13 21:15:22,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569904949] [2019-10-13 21:15:22,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569904949] [2019-10-13 21:15:22,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512809017] [2019-10-13 21:15:22,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,543 INFO L87 Difference]: Start difference. First operand 589 states and 803 transitions. Second operand 3 states. [2019-10-13 21:15:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,575 INFO L93 Difference]: Finished difference Result 1156 states and 1607 transitions. [2019-10-13 21:15:22,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-10-13 21:15:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,581 INFO L225 Difference]: With dead ends: 1156 [2019-10-13 21:15:22,581 INFO L226 Difference]: Without dead ends: 632 [2019-10-13 21:15:22,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-13 21:15:22,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 631. [2019-10-13 21:15:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 21:15:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 875 transitions. [2019-10-13 21:15:22,608 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 875 transitions. Word has length 231 [2019-10-13 21:15:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,609 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 875 transitions. [2019-10-13 21:15:22,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 875 transitions. [2019-10-13 21:15:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:22,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,615 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,615 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1395259844, now seen corresponding path program 1 times [2019-10-13 21:15:22,616 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,616 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114707841] [2019-10-13 21:15:22,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114707841] [2019-10-13 21:15:22,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292848095] [2019-10-13 21:15:22,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,801 INFO L87 Difference]: Start difference. First operand 631 states and 875 transitions. Second operand 3 states. [2019-10-13 21:15:22,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,848 INFO L93 Difference]: Finished difference Result 1279 states and 1818 transitions. [2019-10-13 21:15:22,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2019-10-13 21:15:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,856 INFO L225 Difference]: With dead ends: 1279 [2019-10-13 21:15:22,857 INFO L226 Difference]: Without dead ends: 713 [2019-10-13 21:15:22,859 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2019-10-13 21:15:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 712. [2019-10-13 21:15:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2019-10-13 21:15:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1013 transitions. [2019-10-13 21:15:22,906 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1013 transitions. Word has length 232 [2019-10-13 21:15:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,906 INFO L462 AbstractCegarLoop]: Abstraction has 712 states and 1013 transitions. [2019-10-13 21:15:22,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1013 transitions. [2019-10-13 21:15:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:15:22,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,912 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,912 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1916343691, now seen corresponding path program 1 times [2019-10-13 21:15:22,913 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679707990] [2019-10-13 21:15:22,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:23,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679707990] [2019-10-13 21:15:23,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:23,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:23,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556883299] [2019-10-13 21:15:23,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:23,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:23,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,241 INFO L87 Difference]: Start difference. First operand 712 states and 1013 transitions. Second operand 3 states. [2019-10-13 21:15:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:23,290 INFO L93 Difference]: Finished difference Result 1516 states and 2222 transitions. [2019-10-13 21:15:23,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:23,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-10-13 21:15:23,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:23,298 INFO L225 Difference]: With dead ends: 1516 [2019-10-13 21:15:23,298 INFO L226 Difference]: Without dead ends: 869 [2019-10-13 21:15:23,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-10-13 21:15:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 868. [2019-10-13 21:15:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-10-13 21:15:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1277 transitions. [2019-10-13 21:15:23,362 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1277 transitions. Word has length 233 [2019-10-13 21:15:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,362 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1277 transitions. [2019-10-13 21:15:23,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1277 transitions. [2019-10-13 21:15:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:15:23,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,369 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,370 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1288958908, now seen corresponding path program 1 times [2019-10-13 21:15:23,370 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125101948] [2019-10-13 21:15:23,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:23,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125101948] [2019-10-13 21:15:23,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:23,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:23,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115968001] [2019-10-13 21:15:23,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:23,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,570 INFO L87 Difference]: Start difference. First operand 868 states and 1277 transitions. Second operand 3 states. [2019-10-13 21:15:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:23,674 INFO L93 Difference]: Finished difference Result 1972 states and 2994 transitions. [2019-10-13 21:15:23,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:23,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2019-10-13 21:15:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:23,682 INFO L225 Difference]: With dead ends: 1972 [2019-10-13 21:15:23,682 INFO L226 Difference]: Without dead ends: 1169 [2019-10-13 21:15:23,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-13 21:15:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1168. [2019-10-13 21:15:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2019-10-13 21:15:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1781 transitions. [2019-10-13 21:15:23,741 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1781 transitions. Word has length 234 [2019-10-13 21:15:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,742 INFO L462 AbstractCegarLoop]: Abstraction has 1168 states and 1781 transitions. [2019-10-13 21:15:23,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1781 transitions. [2019-10-13 21:15:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:15:23,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,754 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,754 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1347912636, now seen corresponding path program 1 times [2019-10-13 21:15:23,755 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531381664] [2019-10-13 21:15:23,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,755 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:24,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531381664] [2019-10-13 21:15:24,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586509567] [2019-10-13 21:15:24,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:25,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:25,400 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:25,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:25,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:26,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:26,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:26,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527499487] [2019-10-13 21:15:26,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:26,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:26,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:26,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:26,348 INFO L87 Difference]: Start difference. First operand 1168 states and 1781 transitions. Second operand 9 states. [2019-10-13 21:15:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:27,924 INFO L93 Difference]: Finished difference Result 2314 states and 3542 transitions. [2019-10-13 21:15:27,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:27,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 237 [2019-10-13 21:15:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:27,932 INFO L225 Difference]: With dead ends: 2314 [2019-10-13 21:15:27,932 INFO L226 Difference]: Without dead ends: 1182 [2019-10-13 21:15:27,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 463 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:15:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2019-10-13 21:15:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2019-10-13 21:15:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2019-10-13 21:15:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1799 transitions. [2019-10-13 21:15:28,016 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1799 transitions. Word has length 237 [2019-10-13 21:15:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:28,017 INFO L462 AbstractCegarLoop]: Abstraction has 1182 states and 1799 transitions. [2019-10-13 21:15:28,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1799 transitions. [2019-10-13 21:15:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 21:15:28,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:28,030 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:28,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:28,248 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:28,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1469165754, now seen corresponding path program 1 times [2019-10-13 21:15:28,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:28,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433373219] [2019-10-13 21:15:28,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:28,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:28,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:28,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433373219] [2019-10-13 21:15:28,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052518000] [2019-10-13 21:15:28,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:29,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:29,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:29,578 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:29,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:29,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:30,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:30,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:30,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111448696] [2019-10-13 21:15:30,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:30,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:30,041 INFO L87 Difference]: Start difference. First operand 1182 states and 1799 transitions. Second operand 7 states. [2019-10-13 21:15:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:31,156 INFO L93 Difference]: Finished difference Result 2315 states and 3552 transitions. [2019-10-13 21:15:31,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:31,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2019-10-13 21:15:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:31,164 INFO L225 Difference]: With dead ends: 2315 [2019-10-13 21:15:31,164 INFO L226 Difference]: Without dead ends: 1184 [2019-10-13 21:15:31,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 470 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:15:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-10-13 21:15:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2019-10-13 21:15:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2019-10-13 21:15:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1802 transitions. [2019-10-13 21:15:31,232 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1802 transitions. Word has length 238 [2019-10-13 21:15:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:31,232 INFO L462 AbstractCegarLoop]: Abstraction has 1184 states and 1802 transitions. [2019-10-13 21:15:31,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1802 transitions. [2019-10-13 21:15:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-13 21:15:31,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:31,242 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:31,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:31,456 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:31,457 INFO L82 PathProgramCache]: Analyzing trace with hash 2061869789, now seen corresponding path program 1 times [2019-10-13 21:15:31,457 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:31,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397722949] [2019-10-13 21:15:31,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:31,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:31,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:31,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397722949] [2019-10-13 21:15:31,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399428159] [2019-10-13 21:15:31,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:32,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:32,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:32,798 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:33,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:33,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:33,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:33,585 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:33,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:33,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843442611] [2019-10-13 21:15:33,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:33,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:33,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:33,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:33,591 INFO L87 Difference]: Start difference. First operand 1184 states and 1802 transitions. Second operand 16 states. [2019-10-13 21:15:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:35,350 INFO L93 Difference]: Finished difference Result 2319 states and 3546 transitions. [2019-10-13 21:15:35,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:35,350 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 239 [2019-10-13 21:15:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:35,360 INFO L225 Difference]: With dead ends: 2319 [2019-10-13 21:15:35,360 INFO L226 Difference]: Without dead ends: 1196 [2019-10-13 21:15:35,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 467 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:35,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2019-10-13 21:15:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1194. [2019-10-13 21:15:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2019-10-13 21:15:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1813 transitions. [2019-10-13 21:15:35,426 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1813 transitions. Word has length 239 [2019-10-13 21:15:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:35,427 INFO L462 AbstractCegarLoop]: Abstraction has 1194 states and 1813 transitions. [2019-10-13 21:15:35,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1813 transitions. [2019-10-13 21:15:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-13 21:15:35,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:35,435 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:35,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:35,644 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2071155939, now seen corresponding path program 2 times [2019-10-13 21:15:35,646 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:35,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178598418] [2019-10-13 21:15:35,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:36,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178598418] [2019-10-13 21:15:36,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96064178] [2019-10-13 21:15:36,167 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:36,765 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:36,765 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:36,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:36,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:37,006 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:37,816 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:37,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:37,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794351871] [2019-10-13 21:15:37,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:37,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:37,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:37,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:37,821 INFO L87 Difference]: Start difference. First operand 1194 states and 1813 transitions. Second operand 14 states. [2019-10-13 21:15:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:40,659 INFO L93 Difference]: Finished difference Result 3812 states and 5855 transitions. [2019-10-13 21:15:40,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:40,660 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 240 [2019-10-13 21:15:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:40,687 INFO L225 Difference]: With dead ends: 3812 [2019-10-13 21:15:40,688 INFO L226 Difference]: Without dead ends: 3514 [2019-10-13 21:15:40,692 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:40,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2019-10-13 21:15:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3168. [2019-10-13 21:15:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2019-10-13 21:15:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4990 transitions. [2019-10-13 21:15:40,867 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4990 transitions. Word has length 240 [2019-10-13 21:15:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:40,868 INFO L462 AbstractCegarLoop]: Abstraction has 3168 states and 4990 transitions. [2019-10-13 21:15:40,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4990 transitions. [2019-10-13 21:15:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 21:15:40,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:40,887 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:41,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:41,097 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash -552310949, now seen corresponding path program 1 times [2019-10-13 21:15:41,099 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:41,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005166956] [2019-10-13 21:15:41,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:41,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:41,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:41,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005166956] [2019-10-13 21:15:41,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588758534] [2019-10-13 21:15:41,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:42,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:42,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:42,399 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:42,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:42,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:42,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:43,014 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:43,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:43,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000019052] [2019-10-13 21:15:43,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:43,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:43,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:43,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:43,017 INFO L87 Difference]: Start difference. First operand 3168 states and 4990 transitions. Second operand 15 states. [2019-10-13 21:15:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:45,925 INFO L93 Difference]: Finished difference Result 6230 states and 9856 transitions. [2019-10-13 21:15:45,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:45,925 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 241 [2019-10-13 21:15:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:45,949 INFO L225 Difference]: With dead ends: 6230 [2019-10-13 21:15:45,949 INFO L226 Difference]: Without dead ends: 3174 [2019-10-13 21:15:45,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 471 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2019-10-13 21:15:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3168. [2019-10-13 21:15:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2019-10-13 21:15:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4988 transitions. [2019-10-13 21:15:46,605 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4988 transitions. Word has length 241 [2019-10-13 21:15:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:46,606 INFO L462 AbstractCegarLoop]: Abstraction has 3168 states and 4988 transitions. [2019-10-13 21:15:46,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4988 transitions. [2019-10-13 21:15:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 21:15:46,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:46,623 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:46,830 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:46,831 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:46,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1621920842, now seen corresponding path program 1 times [2019-10-13 21:15:46,832 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:46,832 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203578212] [2019-10-13 21:15:46,833 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:46,833 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:46,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:47,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203578212] [2019-10-13 21:15:47,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645545721] [2019-10-13 21:15:47,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:47,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 3225 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:47,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:47,937 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:48,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:48,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:48,350 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:48,350 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:48,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957988810] [2019-10-13 21:15:48,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:48,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:48,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:48,352 INFO L87 Difference]: Start difference. First operand 3168 states and 4988 transitions. Second operand 12 states.